SP504

SP504 EXAR | Alldatasheet

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Technical content

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 The SP504 is a single chip device that supports eight (8) physical serial interface standards for Wide Area Network connectivity. The SP504 is fabricated using a low power BiCMOS process technology, and incorporates an Exar patented (5,306,954) charge pump allowing +5V only operation. Seven (7) drivers and seven (7) receivers can be configured via soft - ware for any of the above interface modes at any time. The SP504 is suitable for DTE-DCE applications. The SP504 requires only one external resistor per V.35 driver for compliant V.35 Operation.

DESCRIPTION

• +5V Only
• Seven (7) Drivers and Seven (7) Receivers
• Driver and Receiver Tri-State Control
• Reduced V.35 Termination Network
• Pin Compatible with the SP503
• Software Selectable Interface Modes: -RS-232E (V.28) -RS-422A (V., X.2) -RS-449 (V. & V.0) -RS-485 -V.35 -EIA-530 (V. & V.0) -EIA-530A (V. & V.0) -V.36 Driver DecodeReceiver Decode Programmable Charge Pump Vss SP50 4SP504 Vcc Vdd C1+ C1- C2+ C2- 22µF, 16V TxD DTR RTS RL LL RxD RxC CTS DSR DCD RI SCT TT ST 22µF, 16V 22µF, 16V 22µF, 16V SWITCHABLE V.35 TERMINATION RESISTOR NETWORKS SCT RI DCD DSR CTS RxC RxD TxD DTR RTS RL LL ST TT SP504 WAN Multi-Mode Serial Transceiver RxD 1 RDEC0 2 RDEC1 3 RDEC2 4 RDEC3 5 TTEN 6 SCTEN 7 N/C 8 TDEC3 9 TDEC2 10 TDEC1 11 TDEC0 12 DTR 13 TxD 14 TxC 15 RTS 16 RL 17 V35_STAT 18 DCD 19 RxC 20 RI 21 ST 22 STEN 23 LL 24 VCC 25 C1+ 26 VDD 27 C2+ 28 GND 29 C1- 30 C2- 31 VSS 32 VCC 33 GND 34 RR(a) 35 RR(b) 36 RT(a) 37 RT(b) 38 IC(a) 39 IC(b) 40

60 GND

59 SD(b)

58 TR(a)

57 GND

56 TR(b)

55 VCC

54 RS(a)

53 GND

52 RS(b)

51 LL(a)

50 GND

49 LL(b)

48 VCC

47 RL(a)

46 GND

45 RL(b)

44 ST(b)

43 GND

42 ST(a)

41 VCC

80 CTS

79 SCT

78 DSR

77 SCT(b)

76 SCT(a)

75 GND

74 VCC

73 VCC

72 GND

71 RD(b)

70 RD(a)

69 DM(b)

68 DM(a)

67 CS(b)

66 CS(a)

65 TT(b)

64 GND

63 TT(a)

62 VCC

61 SD(a)

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 ABSOLUTE MAXIMUM RATINGS These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability. Input Voltages: Output Voltages: Package Derating: STORAGE CONSIDERATIONS Due to the relatively large package size of the 80-pin quad flat-pack, storage in a low humidity environment is preferred. Large high density plastic packages are moisture sensitive and should be stored in Dry Vapor Barrier Bags. Prior to usage, the parts should remain bagged and stored below 40°C and 60%RH. If the parts are removed from the bag, they should be used within 48 hours or stored in an environment at or below 20%RH. If the above conditions cannot be followed, the parts should be baked for four hours at 25°C in order remove moisture prior to soldering. Exar ships the 80-pin QFP in Dry Vapor Barrier Bags with a humidity indicator card and desiccant pack.The humidity indicator should be below 30%RH. SPECIFICATIONS TA = +25°C and VCC = +5.0V unless otherwise noted. PARAMETER MIN. TYP. MAX. UNITS CONDITIONS Logic Inputs VIL 0.8 Volts VIH 2.0 Volts LOGIC OUTPUTS VOL 0.4 Volts IOUT = +3.2mA VOH 2.4 Volts IOUT = -.0mA RS-485 DRIVER TTL Input Levels VIL 0.8 Volts VIH 2.0 Volts Outputs HIGH Level Output +6.0 Volts LOW Level Output -0.3 Volts Differential Output +/-.5 +/-5.0 Volts RL = 54Ω, CL = 50pF Balance +/-0.2 Volts |VT| - |VT| Offset +2.5 Volts Open Circuit Voltage +/-6.0 Volts Output Current 28.0 mA RL = 54Ω Short-Circuit Current +/-250 mA Terminated in -7V to +0V Transition Time 20 40 ns Rise/Fall time, 0% to 90% Max. Transmission Rate 0 Mbps RL = 54Ω; Figure 3a Propagation Delay tPHL 50 80 00 ns TA @ 25°C and VCC = +5V only Fig- ures 3a and 5; RL= 54Ω, CL=50pF

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 SPECIFICATIONS TA = +25°C and VCC = +5.0V unless otherwise noted. PARAMETER MIN. TYP. MAX. UNITS CONDITIONS RS-485 DRIVER (continued) Propagation Delay tPLH 50 80 00 ns TA @ 25°C and VCC = +5V only Fig- ures 3a and 5; RL= 54Ω, CL=50pF Differential Driver Skew 20 40 ns |tPHL - tPLH|; TA @ 25°C RS-485 RECEIVER TTL Output Levels VOL 0.4 Volts VOH 2.4 Volts Input HIGH Threshold +0.2 +2 Volts (a)-(b) LOW Threshold -7.0 -0.2 Volts (a)-(b) Common Mode Range -7.0 +2 Volts HIGH Input Current Refer to Receiver input graph LOW Input Current Refer to Receiver input graph Receiver Sensitivity +/-0.2 Volts Over -7V to +2V common mode Range Input Impedance 2 kΩ Max. Transmission Rate 0 Mbps Figure 3a Propagation Delay tPHL 80 0 80 ns TA @ 25°C and VCC = +5V only. Figures 3a and 7; A is inverting and B is non-inverting. Propagation Delay tPLH 80 0 80 ns Differential Receiver Skew 30 ns |tPHL - tPLH|; TA @ +25°C V.35 DRIVER TTL Input Levels VIL 0.8 Volts VIH 2.0 Volts Outputs All Outputs measured with 150Ω termination resistor connected to the non-inverting outputs as shown in Figure 9. Differential Output +/-0.44 +/-0.66 Volts RL = 100Ω Source Impedance 50 00 50 Ω Short-Circuit Impedance 35 50 65 Ω VOUT = -2V to +2V; A = B Voltage Output Offset -0.6 +0.6 Volts Transition Time 35 60 ns 48kbps data rate; TA @ 25°C Max. Transmission Rate 0 Mbps RL = 100Ω Propagation Delay tPHL 50 80 00 ns TA @ 25°C and VCC = +5V only Figures 3b and 5Propagation Delay tPLH 50 80 00 ns DIfferential Driver Skew 30 40 ns |tPHL - tPLH|; TA @ +25°C V.35 RECEIVER TTL Output Levels VOL 0.4 Volts VOH 2.4 Volts

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 SPECIFICATIONS TA = +25°C and VCC = +5.0V unless otherwise noted. PARAMETER MIN. TYP. MAX. UNITS CONDITIONS V.35 RECEIVER (continued) Input Differential Threshold +/-80 mV Input Impedance 90 00 0 Ω Short-Circuit Impedance 35 50 65 Ω VIN = +2V to -2V Max. Transmission Rate 0 Mbps Propagation Delay tPHL 00 30 200 ns TA @ 25°C and VCC = +5V only Figures 3b and 7; A is inverting and B is non-inverting. Propagation Delay tPLH 00 30 200 ns DIfferential Receiver Skew 30 ns |tPHL - tPLH|; TA @ 25°C RS-422 DRIVER (V.11) TTL Input Levels VIL 0.8 Volts VIH 2.0 Volts Outputs Open circuit Voltage, VO +/-6.0 Volts RL = 3.9kΩ Differential Output, VT +/-2.0 +/-5.0 Volts RL = 100Ω 0.5VO 0.67VO Volts TA @ 25°C Balance +/-0.4 Volts |VT| - |VT| Offset +3.0 Volts Short Circuit Current +/-50 mA VOUT = 0V Power Off Current +/-00 µA VCC = 0V, VOUT = +/-0.25V Transition Time 20 40 ns Rise/Fall time, 0% - 90% Max. Transmission Rate 0 Mbps RL = 100Ω; Figure 3a Propagation Delay tPHL 50 80 00 ns TA @ 25°C and VCC = +5V only Figures 3a and 5; RDIFF = 100ΩPropagation Delay tPLH 50 80 00 ns Differential Skew 20 40 ns |tPHL - tPLH|; TA @ 25°C RS-422 RECEIVER (V.11) TTL Output Levels VOL 0.4 Volts VOH 2.4 Volts Input HIGH Threshold +0.2 +6.0 Volts (a)-(b) LOW Threshold -6.0 -0.2 Volts (a)-(b) Common Mode Range -7.0 +7 Volts HIGH Input Current Refer to Receiver input graph LOW Input Current Refer to Receiver input graph Receiver Sensitivity +/-0.3 Volts VCM = +7V to -7V Input Impedance 4 kΩ VIN = +0V to -0V Max. Transmission Rate 0 Mbps

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 PARAMETER MIN. TYP. MAX. UNITS CONDITIONS RS-422 RECEIVER (V.11) (continued) Propagation Delay tPHL 80 0 80 ns TA @ 25°C and VCC = +5V only. Figures 3b and 7; A is inverting and B is non-inverting. Propagation Delay tPLH 80 0 80 ns DIfferential Receiver Skew 30 ns |tPHL - tPLH|; TA @ 25°C RS-232 DRIVER (V.28) TTL Input Levels VIL 0.8 Volts VIH 2.0 Volts Outputs HIGH Level Output +5.0 +5.0 Volts RL = 3kΩ, VIN = 0.8V LOW Level Output -5.0 -5.0 Volts RL = 3kΩ, VIN = 2.0V Open Circuit Voltage -5 +5 Volts Short Circuit Current +/-00 mA VOUT = 0V Power Off Impedance 300 Ω VCC = 0V, VOUT = +/-2.0V Slew Rate 30 V/µs RL = 3kΩ, CL = 50pF; VCC = +5.0V, TA @ 25°C Transistion Time .56 µs RL = 3KΩ, CL = 2500pF; between +/-3V, TA @ +25°C Max. Transmission Rate 20 230.4 kbps RL = 3kΩ, CL = 2500pF Propagation Delay tPHL 0.5 4 µs TA @ 25°C and VCC = +5V only. Measured from .5V of VIN to 50% of VOUT; RL = 3kΩ Propagation Delay tPLH 0.5 4 µs RS-232 RECEIVER (V.28) TTL Output Levels VOL 0.4 Volts VOH 2.4 Volts Input HIGH Threshold .7 3.0 Volts LOW Threshold 0.8 .2 Volts Reciever Open Circuit Bias +2.0 Volts Input Impedance 3 5 7 kΩ VIN = +5V to -5V Max. Transmission Rate 20 230.4 kbps Propagation Delay tPHL 0.05 0.25 µs TA @ 25°C and VCC = +5V only. Measured from 50% of VIN to .5V of VOUT Propagation Delay tPLH 0.05 0.25 µs RS-423 DRIVER (V.10) TTL Input Levels VIL 0.8 Volts VIH 2.0 Volts Outputs Open Circuit Voltage, VO +/-4.0 +/-6.0 Volts RL = 3.9kΩ SPECIFICATIONS TA = +25°C and VCC = +5.0V unless otherwise noted.

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 SPECIFICATIONS TA = +25°C and VCC = +5.0V unless otherwise noted. PARAMETER MIN. TYP. MAX. UNITS CONDITIONS RS-423 DRIVER (V.10) (continued) HIGH Level Output, VT +3.6 +6.0 Volts RL = 450Ω; VOUT ≥0.9VOC LOW Level Output, VT -6.0 -3.6 Volts RL = 450Ω; VOUT ≥0.9VOC 0.9VOC Volts TA = +25°C, VCC = +5.0V Short Circuit Current +/-50 mA VOUT = 0V, VCC = +5.0V Power Off Current +/-00 µA VCC = 0V, VOUT = +/-0.25V Transition Time 00 ns Rise/Fall time, between +/-3V Max. Transmission Rate 20 kbps RL = 450Ω Propagation Delay tPHL 0.05 0.5 2 µs TA @ 25°C and VCC = +5V only. Measured from .5V of VIN to 50% of VOUT; RL = 450Ω Propagation Delay tPLH 0.05 0.5 2 µs RS-423 RECEIVER (V.10) TTL Output Levels VOL 0.4 Volts VOH 2.4 Volts Input HIGH Threshold +0.3 +7.0 Volts LOW Threshold -7.0 -0.3 Volts HIGH Input Current Refer to Receiver input graph LOW Input Current Refer to Receiver input graph Receiver Sensitivity +/-0.3 Volts VCM = +7V to -7V Input Impedance 4 kΩ VIN = +0V to -0V Max. Transmission Rate 20 kbps Propagation Delay tPHL 0.05 0.2 µs TA @ 25°C and VCC = +5V only Measured from 50% of VIN to .5V of VOUT Propagation Delay tPLH 0.05 0.2 µs POWER REQUIREMENTS VCC 4.75 5.00 5.25 Volts ICC (No Mode Selected) 30 mA All ICC values are with VCC = +5V ICC (RS-232 Mode) 40 mA fIN = 120kbps; Drivers loaded ICC (RS-422 Mode) 320 mA fIN = 2Mbps; Drivers loaded ICC (RS-449 Mode) 320 mA fIN = 2Mbps; Drivers loaded ICC (EIA-530 Mode) 320 mA fIN = 2Mbps Drivers loaded ICC (EIA-530A Mode) 320 mA fIN = 2Mbps Drivers loaded ICC (RS-485 Mode) 370 mA fIN = 2Mbps Drivers loaded ICC (V.35 Mode) 20 mA fIN = 2Mbps Drivers loaded ICC (V.36 Mode) 30 mA fIN = 2Mbps Drivers loaded ENVIRONMENTAL AND MECHANICAL Operating Temperature Range 0 +70 °C Storage Temperature Range -65 +50 °C ESD 500 V HBM

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 OTHER AC CHARACTERISTICS TA = +70°C to 0°C and VCC = +4.75V to +5.25V unless otherwise noted. PARAMETER MIN. TYP. MAX. UNITS CONDITIONS DRIVER DELAY TIME BETWEEN ACTIVE MODE AND TRI-STATE MODE RS-232 Mode tPZL; Tri-state to Output LOW 0.70 5.0 µs CL = 100pF, Fig. 4 ; S closed tPZH; Tri-state to Output HIGH 0.40 2.0 µs CL = 100pF, Fig. 4 ; S2 closed tPLZ; Output LOW to Tri-state 0.20 2.0 µs CL = 100pF, Fig. 4 ; S closed tPHZ; Output HIGH to Tri-state 0.40 2.0 µs CL = 100pF, Fig. 4 ; S2 closed RS-423 MODE tPZL; Tri-state to Output LOW 0.5 2.0 µs CL = 100pF, Fig. 4 ; S closed tPZH; Tri-state to Output HIGH 0.20 2.0 µs CL = 100pF, Fig. 4 ; S2 closed tPLZ; Output LOW to Tri-state 0.20 2.0 µs CL = 100pF, Fig. 4 ; S closed tPHZ; Output HIGH to Tri-state 0.5 2.0 µs CL = 100pF, Fig. 4 ; S2 closed RS-422, RS-485 MODES tPZL; Tri-state to Output LOW 2.80 0.0 µs CL = 100pF, Fig. 4 & 6; S closed tPZH; Tri-state to Output HIGH 0.0 2.0 µs CL = 100pF, Fig. 4 & 6; S2 closed tPLZ; Output LOW to Tri-state 0.0 2.0 µs CL = 15pF, Fig. 4 & 6; S closed tPHZ; Output HIGH to Tri-state 0.0 2.0 µs CL = 15pF, Fig. 4 & 6; S2 closed V.35 MODE tPZL; Tri-state to Output LOW 2.60 0.0 µs CL = 100pF, Fig. 4 & 6; S closed tPZH; Tri-state to Output HIGH 0.0 2.0 µs CL = 100pF, Fig. 4 & 6; S2 closed tPLZ; Output LOW to Tri-state 0.0 2.0 µs CL = 15pF, Fig. 4 & 6; S closed tPHZ; Output HIGH to Tri-state 0.5 2.0 µs CL = 15pF, Fig. 4 & 6; S2 closed RECEIVER INPUT GRAPHS RS-422 RECEIVER +3.25mA -3.25mA +3V +10V -3V-10V Maximum Input Current Versus Voltage RS-485 RECEIVER +1.0mA -0.6mA +6V +12V -3V-7V Maximum Input Current Versus Voltage

1 Unit Load

+3.25mA -3.25mA +3V +10V -3V-10V Maximum Input Current Versus Voltage

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 OTHER AC CHARACTERISTICS TA = +70°C to 0°C and VCC = +4.75V to +5.25V unless otherwise noted. PARAMETER MIN. TYP. MAX. UNITS CONDITIONS RECEIVER DELAY TIME BETWEEN ACTIVE MODE AND TRI-STATE MODE RS-232 Mode tPZL; Tri-state to Output LOW 0.2 2.0 µs CL = 100pF, Fig. 2 ; S closed tPZH; Tri-state to Output HIGH 0.0 2.0 µs CL = 100pF, Fig. 2 ; S2 closed tPLZ; Output LOW to Tri-state 0.0 2.0 µs CL = 100pF, Fig. 2 ; S closed tPHZ; Output HIGH to Tri-state 0.0 2.0 µs CL = 100pF, Fig. 2 ; S2 closed RS-423 MODE tPZL; Tri-state to Output LOW 0.0 2.0 µs CL = 100pF, Fig. 2 ; S closed tPZH; Tri-state to Output HIGH 0.0 2.0 µs CL = 100pF, Fig. 2 ; S2 closed tPLZ; Output LOW to Tri-state 0.0 2.0 µs CL = 100pF, Fig. 2 ; S closed tPHZ; Output HIGH to Tri-state 0.0 2.0 µs CL = 100pF, Fig. 2 ; S2 closed RS-422, RS-485 MODES tPZL; Tri-state to Output LOW 0.0 2.0 µs CL = 100pF, Fig. 2 & 8; S closed tPZH; Tri-state to Output HIGH 0.0 2.0 µs CL = 100pF, Fig. 2 & 8; S2 closed tPLZ; Output LOW to Tri-state 0.0 2.0 µs CL = 15pF, Fig. 2 & 8; S closed tPHZ; Output HIGH to Tri-state 0.0 2.0 µs CL = 15pF, Fig. 2 & 8; S2 closed V.35 MODE tPZL; Tri-state to Output LOW 0.0 2.0 µs CL = 100pF, Fig. 2 & 8; S closed tPZH; Tri-state to Output HIGH 0.0 2.0 µs CL = 100pF, Fig. 2 & 8; S2 closed tPLZ; Output LOW to Tri-state 0.0 2.0 µs CL = 15pF, Fig. 2 & 8; S closed tPHZ; Output HIGH to Tri-state 0.0 2.0 µs CL = 15pF, Fig. 2 & 8; S2 closed TRANSCEIVER TO TRANSCEIVER SKEW [(tPHL-tPLH)Trcvr - (tPHL - tPLH)TRCVRX] RS-232 Driver 20 50 ns VCC = +5.0V, TA @ 25ºC RS-232 Receiver 20 50 ns VCC = +5.0V, TA @ 25ºC RS-422 Driver 20 50 ns VCC = +5.0V, TA @ 25ºC RS-422 Receiver 20 50 ns VCC = +5.0V, TA @ 25ºC RS-423 Driver 20 50 ns VCC = +5.0V, TA @ 25ºC RS-423 Receiver 20 50 ns VCC = +5.0V, TA @ 25ºC V.35 Driver 20 50 ns VCC = +5.0V, TA @ 25ºC V.35 Receiver 20 50 ns VCC = +5.0V, TA @ 25ºC

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 PINOUT… PIN ASSIGNMENTS… CLOCK AND DATA GROUP Pin 1 — RxD — Receive Data; TTL output, sourced from RD(a) and RD(b) inputs. Pin 14 — TxD — TTL input ; transmit data source for SD(a) and SD(b) outputs. Pin 15 — TxC — Transmit Clock; TTL input for TT driver outputs. Pin 20 — RxC — Receive Clock; TTL output sourced from RT(a) and RT(b) inputs. Pin 22 — ST — Send Timing; TTL input; source for ST(a) and ST(b) outputs. Pin 37 — RT(a) — Receive Timing; analog input, inverted; source for RxC. Pin 38 — RT(b) — Receive Timing; analog input, non-inverted; source for RxC. Pin 42 — ST(a) — Send Timing; analog output, inverted; sourced from ST. Pin 44 — ST(b) — Send Timing; analog output, non-inverted; sourced from ST. Pin 59 — SD(b) — Analog Out — Send data, non-inverted; sourced from TxD. Pin 6 — SD(a) — Analog Out — Send data, inverted; sourced from TxD. Pin 63 — TT(a) — Analog Out — Terminal Timing, inverted; sourced from TxC Pin 65 — TT(b) — Analog Out — Terminal Timing, non–inverted; sourced from TxC. Pin 70 — RD(a) — Receive Data, analog input; inverted; source for RxD. Pin 71 — RD(b) — Receive Data; analog input; non-inverted; source for RxD. Pin 76 — SCT(a) — Serial Clock Transmit; analog input, inverted; source for SCT. Pin 77 — SCT(b) — Serial Clock Transmit: analog input, non–inverted; source for SCT Pin 79 — SCT — Serial Clock Transmit; TTL output; sources from SCT(a) and SCT(b) inputs. CONTROL LINE GROUP Pin 13 — DTR — Data Terminal Ready; TTL input; source for TR(a) and TR(b) outputs. Pin 16 — RTS — Ready To Send; TTL input; source for RS(a) and RS(b) outputs. Pin 17 — RL — Remote Loopback; TTL input; source for RL(a) and RL(b) outputs. Pin 18 — V35_STAT — V.35 Status; TTL output; outputs logic high when in V.35 mode. Pin 19 — DCD— Data Carrier Detect; TTL output; sourced from RR(a) and RR(b) inputs. Pin 21 — RI — Ring Indicate; TTL output; sourced from IC(a) and IC(b) inputs. Pin 24 — LL — Local Loopback; TTL input; source for LL(a) and LL(b) outputs. Pin 35 — RR(a)— Receiver Ready; analog input, inverted; source for DCD. Pin 36 — RR(b)— Receiver Ready; analog input, non-inverted; source for DCD. Pin 39 — IC(a)— Incoming Call; analog input, inverted; source for RI. RxD 1 RDEC0 2 RDEC1 3 RDEC2 4 RDEC3 5 TTEN 6 SCTEN 7 N/C 8 TDEC3 9 TDEC2 10 TDEC1 11 TDEC0 12 DTR 13 TxD 14 TxC 15 RTS 16 RL 17 V35_STAT 18 DCD 19 RxC 20 RI 21 ST 22 STEN 23 LL 24 VCC 25 C1+ 26 VDD 27 C2+ 28 GND 29 C1- 30 C2- 31 VSS 32 VCC 33 GND 34 RR(a) 35 RR(b) 36 RT(a) 37 RT(b) 38 IC(a) 39 IC(b) 40

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 Pin 40 — IC(b)— Incoming Call; analog input,non-inverted; source for RI. Pin 45 — RL(b) — Remote Loopback; analog output, non-inverted; sourced from RL. Pin 47 — RL(a) — Remote Loopback; analog output inverted; sourced from RL. Pin 49— LL(b) — Local Loopback; analog output, non-inverted; sourced from LL. Pin 51 — LL(a) — Local Loopback; analog output, inverted; sourced from LL. Pin 52 — RS(b) — Ready To Send; analog output, non-inverted; sourced from RTS. Pin 54 — RS(a) — Ready To Send; analog output, inverted; sourced from RTS. Pin 56 — TR(b) — Terminal Ready; analog output, non-inverted; sourced from DTR. Pin 58 — TR(a) — Terminal Ready; analog output, inverted; sourced from DTR. Pin 66 — CS(a)— Clear To Send; analog input, inverted; source for CTS. Pin 67 — CS(b)— Clear To Send; analog input, non-inverted; source for CTS. Pin 68 — DM(a)— Data Mode; analog input, inverted; source for DSR. Pin 69 — DM(b)— Data Mode; analog input, non-inverted; source for DSR Pin 78 — DSR— Data Set Ready; TTL output; sourced from DM(a), DM(b) inputs. Pin 80 — CTS— Clear To Send; TTL output; sourced from CS(a) and CS(b) inputs. CONTROL REGISTERS Pins 2–5 — RDEC0 – RDEC3 — Receiver decode register; configures receiver modes; TTL inputs. Pin 6 — TTEN — Enables TT driver, active low; TTL input. Pin 7 — SCTEN — Enables SCT receiver; active high; TTL input. Pins 2–9 — TDEC0 – TDEC3 — Transmit- ter decode register; configures transmitter modes; TTL inputs. Pin 23 — STEN — Enables ST driver; active low; TTL input. POWER SUPPLIES Pins 25, 33, 4, 48, 55, 62, 73, 74 — V CC — +5V input. Pins 29, 34, 43, 46, 50, 53, 57, 60, 64, 72, 75 — GND — Ground. Pin 27 — VDD +0V Charge Pump Capacitor — Connects from V DD to V CC. Suggested capacitor size is 22µF, 6V. Pin 32 — VSS –0V Charge Pump Capacitor — Connects from ground to VSS. Suggested capacitor size is 22µF, 6V. Pins 26 and 30 — C + and C – — Charge Pump Capacitor — Connects from C + to C Suggested capacitor size is 22µF, 6V. Pins 28 and 3 — C 2 + and C2 – — Charge Pump Capacitor — Connects from C2 + to C2 Suggested capacitor size is 22µF, 6V. NOTE: NC pins should be left floating; in - ternal signals may be present.

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 Since both VDD and VSS are separately gen- erated from VCC in a no–load condition, VDD and VSS will be symmetrical. Older charge pump approaches that generate V – from V+ will show a decrease in the magnitude of V– compared to V + due to the inherent inefficiencies in the design. The clock rate for the charge pump typically operates at 5kHz. The external capacitors must be a minimum of 22µF with a 6V breakdown rating. External Power Supplies For applications that do not require +5V only, external supplies can be applied at the V+ and V– pins. The value of the external supply volt- ages must be no greater than ±l0.5V. The tol- erance should be ±5% from ±0V. The current drain for the supplies is used for RS-232 and RS-423 drivers. For the RS-232 driver, the current requirement will be 3.5mA per driver. The RS-423 driver worst case cur - rent drain will be mA per driver. Power sequencing is required for the SP504. The supplies must be sequenced accordingly: +0V, +5V and –0V. An external circuit would be needed for proper power supply sequencing. Consult factory for application circuitry. Drivers The SP504 has seven (7) enhanced in - dependent drivers. Control for the mode selection is done via a four–bit control word. The drivers are pre-arranged such that for each mode of operation, the relative posi - tion and functionality of the drivers are set up to accommodate the selected interface mode. As the mode of the drivers is changed, the electrical characteristics will change to support the requirements of clock, data, and control line signal levels. Table shows the mode of each driver in the different interface modes that can be selected. There are four basic types of driver circuits — RS-232, RS-423, RS-485 and V.35. The RS-232 drivers output single–ended signals with a minimum of ±5V (with 3kΩ and 2500pF loading), and can operate up to 20kbps. The RS-232 drivers are used in RS- 232 mode for all signals, and also in V.35 mode where they are used as the control line signals such as DTR and RTS. The RS-423 drivers are also single–ended signals with a minimum voltage output of ±3.6V (with 450Ω loading) and can operate up to 20kbps. Open circuit V OL and V OH measurements are ±4.0V to ±6.0V. The RS- 423 drivers are used in RS-449, EIA-530, EIA-530A and V.36 modes as Category II signals from each of their corresponding specifications. The third type of driver produces a differential signal that can maintain RS-485, ±.5V dif- ferential output levels with a worst case load of 54Ω. The signal levels and drive capability of the RS-485 drivers allow the drivers to also support RS-422 (V.) requirements of ±2V differential output levels with 100Ω loads. The RS-422 drivers are used in RS- 449, EIA-530, EIA-530A and V.36 modes as Category I signals which are used for clock and data. The fourth type of driver is the V.35 driver. V.35 levels require ±0.55V driver output sig- nals with a load of 100Ω. The SP504 drivers simplify existing V.35 implementations that use external termination schemes. The drivers were specifically designed to comply with the requirements of V.35 as well as the driver output impedance values of V.35. The drivers achieve the 50Ω to 150Ω source impedance. However, an external 150Ω resistor to ground must be connected to the non-inverting outputs; SD(b), ST(b), and TT(b), in order to comply with the 135Ω to 165Ω short-circuit impedance for V.35. The V.35 driver itself is disabled and transparent when the decoder is in all other modes. All of the differential drivers; RS-485, RS-422, and V.35, can operate up to 0Mbps. The driver inputs are both TTL or CMOS compatible. Since there are no pull-up or pull-down resistors on the driver inputs, they should be tied to a known logic state in order to define the driver output.

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 Receivers The SP504 has seven (7) independent re - ceivers which can be programmed for the different interface modes. Control for the mode selection is done via a 4–bit control word that is independent from the driver control word. The coding for the drivers and receivers is identical. Therefore, if the modes for the drivers and receivers are supposed to be identical in the application, the control lines can be tied together. Like the drivers, the receivers are pre-ar - ranged for the specific requirements of the interface. As the operating mode of the receivers is changed, the electrical characteristics will change to support the requirements of clock, data, and control line receivers. Table 2 shows the mode of each receiver in the different interface modes that can be selected. There are three basic types of receiver cir- cuits — RS-232, RS-423, and RS-485. The RS-232 receiver is a single–ended input with a threshold of 0.8V to 2.4V. The RS-232 receiver has an operating voltage range of ±5V and can receive signals up to 20kbps. The input sensitivity complies with EIA-RS-232 and V.28 at +3V to -3V. The input impedance is 3kΩ to 7kΩ. RS- 232 receivers are used in RS-232 mode for all data, clock and control signals. They are also used in V.35 mode for control line signals such as CTS and DSR. The RS-423 receivers are also single–ended but have an input threshold as low as ±200mV. The input impedance is guaranteed to be greater than 4kΩ, with an operating volt- age range of ±7V. The RS-423 receivers can operate up to 20kbps. RS-423 receivers are used in RS-449, EIA-530, EIA-530A and V.36 modes as Category II signals as indicated by their corresponding specifications. The third type of receiver is a differential which supports RS-485. The RS-485 receiver has an input impedance of 15kΩ and a differential threshold of ±200mV. Since the characteris- tics of an RS-422 (V.) receiver are actually subsets of RS-485, the receivers for RS-422 requirements are covered by the RS-485 receivers. RS-422 receivers are used in RS-449, EIA-530, EIA-530A and V.36 as Category I signals for receiving clock, data, and some control line signals. The differential receivers can receive data up to 0Mbps. The RS-485 receivers are also used for the V.35 mode. Unlike the older implementations of differential or V.35 receivers, the SP504 contains an internal resistor termination net- work that ensures a V.35 input impedance of 100Ω (±10Ω) and a short-circuit impedance of 150Ω (±15Ω). The traditional V.35 imple- mentations required external termination resistors to acheive the proper V.35 imped- ances. The internal network is connected via low on-resistance FET switches when the decoder is changed to V.35 mode. The termination network is transparent when all other modes are selected. The V.35 receiv- ers can operate up to 0Mbps. All receivers include a fail-safe feature that outputs a logic HIGH when the receiver inputs are open. For single-ended RS-232 receivers, there are internal 5kΩ pull-down resistors on the inputs which produces a logic HIGH ("") at the receiver outputs. The single-ended RS-423 receivers produce a logic LOW ("0") on the output when the inputs are open. This is due to a pull-up device connected to the input. The differential re- ceivers have the same internal pull-up device on the non-inverting input which produces a logic HIGH ("") at the receiver output. The three differential receivers when configured in V.35 mode (RxD, RxC & SCT) do not have fail-safe because the internal termination resistor network is connected. Decoder The SP504 has the ability to change the interface mode of the drivers or receivers via an 8–bit switch. The decoder for the drivers and receivers is not latched; it is merely a combinational logic switch. The control word can be externally latched either HIGH or LOW to write the appropriate code into the SP504. The codes shown in Tables 1 and 2 are the only specified, valid modes for the SP504. Undefined codes

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 may represent other interface modes not specified (consult the factory for more in - formation). The drivers are controlled with the data bits labeled TDEC3–TDEC0. All of the drivers can be put into tri-state mode by writing 0000 to the driver decode switch. The three drivers TxD, ST and TxC, have a 150Ω pull-down resistor to ground connected at the (b) output. This resistor is part of the V.35 driver circuitry and should be connected when in V.35 mode. Tri-state is possible for all drivers in RS-232 mode. The receivers are controlled with data bits RDEC3–RDEC0; the code 0000 written to the receivers will place the outputs into tri-state mode. The 0000 decoder word will override the enable control line for the one receiver (SCT). Using the V.35_STAT Pin The SP504 includes a V.35 status pin where the V35_STAT pin (pin 8) is a logic HIGH ("") when the decoder is set to V.35 mode. The pin is a logic LOW ("0") when in all other modes including tri-state (decoder set at "0000"). Pin 8 allows the user to easily add FET switches or solid state relays to connect the external 150Ω resistor for V.35 operation. V35_STAT can be connected to the gate of the FET switches or the control of the relays so that the 150Ω resistors are connected to the non-inverting output of the three V.35 drivers. The output current of the V35_STAT pin is that of a typical TTL load of –3.2mA. The electrical specifications are similar to the SP504 receiver outputs. This feature would reduce additional logic required by older traditional methods. NET/NET2 Testing and Compliancy Many system designers are required to certify their system for use in the European public network. Electrical testing is performed in adherence to the NET (Norme Européenne de Télécommunication) which specifies the ITU Series V specifications. The SP504 adheres to all the required physical layer testing for NET and NET2. Consult factory for details.

Table 2. Receiver Mode Selection

14 TxD

23 STEN

15 TxC

6 TTEN

13 DTR

16 RTS

Figure 9. SP504 Typical Operating Circuit

Figure 20. Mode Diagram — RS-232

1 Disabled 1 Disabled 1 Enabled

0 Enabled 0 Enabled 0 Disabled

Figure 2. Mode Diagram — V.35

Figure 22. Mode Diagram — RS-422

Figure 23. Mode Diagram — RS-449

Figure 24. Mode Diagram — RS-485

Figure 25. Mode Diagram — EIA-530

Figure 26. Mode Diagram — EIA-530A

Figure 27. Mode Diagram — V.36

support extra functions such as diagnostics. and two receivers for a DCE). adhere to the RS-423 specifications. Figure 28. Mode selection for the SP332

Figure 29. Adding extra differential and single-ended transceivers using the SP332

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 PACKAGE: 80 Pin LQFP

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708

ORDERING INFORMATION

Model Temperature Range Package Types

REVISION HISTORY

0-27-04 A Implemented tracking revision. 7-7-08 .0.0 SP504 is no longer available in MQFP package per PCN 07-02-06a. SP54 is now only available in LQFP package compliant to RoHS. Changed to Exar data- sheet format and revision to .0.0. 0/28/08 .0. Added ESD rating of 500V HBM to electrical characteristics. 2/7/08 .0.2 Add new V.35 Driver output VOD vs. Temperature graph and update figure num- bers. Notice EXAR Corporation reserves the right to make changes to any products contained in this publication in order to improve design, performance or reliabil- ity. EXAR Corporation assumes no representation that the circuits are free of patent infringement. Charts and schedules contained herein are only for illustration purposes and may vary depending upon a user's specific application. While the information in this publication has been carefully checked; no responsibility, however, is assumed for inaccuracies. EXAR Corporation does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications unless EXAR Corporation receives, in writting, assurances to its satisfaction that: (a) the risk of injury or damage has been minimized ; (b) the user assumes all such risks; (c) potential liability of EXAR Corporation is adequately protected under the circumstances. Copyright 2008 EXAR Corporation Datasheet December 2008 Send your Interface technical inquiry with technical details to: uarttechsupport@exar.com Reproduction, in part or whole, without the prior written consent of EXAR Corporation is prohibited.