SP504 SIPEX | Alldatasheet
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Rev: A Date:1/27/04 SP504 Multi–Mode Serial Transceivers © Copyright 2004 Sipex Corporation 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 a Sipex patented (5,306,954) charge pump allowing +5V only operation. Seven (7) drivers and seven (7) receivers can be configured via software for any of the above interface modes at any time. The SP504 is suited 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-485 -V.35 -EIA-530A (V.11 & V.10) -V.36 SWITCHABLE V.35 TERMINATION RESISTOR NETWORKS RxD RXC CTS DSR DCD RI SCT TxD DTR RTS RL LL ST TT SP504 W AN Multi-Mode Serial Transceiver Driver DecodeReceiver Decode Programmable Charge Pump Vss SP504SP504 Vcc Vdd C1+ C1- C2+ C2- 22µF, 16V 22µF, 16V TxD DTR RTS RL LL RxD RxC CTS DSR DCD RI SCT TT ST 22µF, 16V 22µF, 16V
Rev: A Date:1/27/04 SP504 Multi–Mode Serial Transceivers © Copyright 2004 Sipex Corporation SPECIFICATIONS TA = +25°C and VCC = +5.0V unless otherwise noted. MIN. TYP. MAX. UNITS CONDITIONS LOGIC INPUTS VIL 0.8 Volts VIH 2.0 Volts LOGIC OUTPUTS VOL 0.4 Volts I OUT = +3.2mA VOH 2.4 Volts I OUT = –1.0mA 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 ±1.5 ±5.0 Volts R L=54Ω, CL=50pF Balance ±0.2 Volts |V T| - |VT| Offset +2.5 Volts Open Circuit Voltage ±6.0 Volts Output Current 28.0 mA R L=54Ω Short Circuit Current ±250 mA Terminated in –7V to +10V Transition Time 20 40 ns Rise/fall time, 10%–90% Max. Transmission Rate 10 Mbps R L=54Ω; Figure 3a Propagation Delay T A @ 25°C & VCC = +5V only tPHL 50 80 100 ns Figures 3a and 5; R L=54Ω tPLH 50 80 100 ns C L=50pF Differential Driver Skew 20 40 ns | t PHL – tPLH |; TA @ +25°C RS-485 RECEIVER TTL Output Levels VOL 0.4 Volts VOH 2.4 Volts Input HIGH Threshold +0.2 +12 Volts (a)-(b) LOW Threshold –7.0 –0.2 Volts (a)-(b) Common Mode Range –7.0 +12.0 Volts HIGH Input Current Refer to Rec. input graph LOW Input Current Refer to Rec. input graph Receiver Sensitivity ±0.2 Volts Over –7V to +12V common mode range Input Impedance 12 k Ω Max. Transmission Rate 10 Mbps Figure 3a Propagation Delay T A = 25°C & VCC = +5V only tPHL 80 110 180 ns Figures 3a and 7; A is invert- tPLH 80 110 180 ns ing and B is non-inverting. Differential Receiver Skew 30 ns | t PHL – tPLH |; TA @ +25°C V.35 DRIVER TTL Input Levels All outputs measured w/ VIL 0.8 Volts 150 Ω termination resistor VIH 2.0 Volts connected to the non- inverting outputs as shown Outputs in Figure 18. Differential Output ±0.44 ±0.66 Volts R L=100Ω Source Impedance 50 100 150 Ω Short-Circuit Impedance 135 150 165 Ω VOUT = –2V to +2V; A = B Voltage Output Offset –0.6 +0.6 Transition Time 35 60 ns 48kbps data rate.; T A@ 25 °C Max. Transmission Rate 10 Mbps R L=100Ω
Rev: A Date:1/27/04 SP504 Multi–Mode Serial Transceivers © Copyright 2004 Sipex Corporation SPECIFICATIONS (Continued) TA = +25°C and VCC = +5.0V unless otherwise noted. MIN. TYP. MAX. UNITS CONDITIONS V.35 DRIVER Propagation Delay T A @ 25°C & VCC = +5V only tPHL 50 80 100 ns Figures 3b and 5 tPLH 50 80 100 ns Differential Driver Skew 30 40 ns | t PHL – tPLH |; TA @ +25°C V.35 RECEIVER TTL Output Levels VOL 0.4 Volts VOH 2.4 Volts Input Differential Threshold ±80 mV Input Impedance 90 100 110 Ω Short-Circuit Impedance 135 150 165 Ω VIN = +2V to –2V Max. Transmission Rate 10 Mbps Propagation Delay T A @ 25°C & VCC = +5V only tPHL 100 130 200 ns Figure 3b and 7; A is invert- tPLH 100 130 200 ns ing and B is non-inverting. Differential Receiver Skew 30 ns | t PHL – 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 R L=3.9kΩ Differential Output, VT ±2.0 ±5.0 Volts R L=100Ω 0.5VO 0.67VO Volts T A @ +25°C Balance ±0.4 Volts |V T| – |VT| Offset +3.0 Volts Short Circuit Current ±150 mA V out = 0V Power Off Current ±100 µAV cc = 0V, Vout = ±0.25V Transition Time 20 40 ns Rise/fall time, 10%-90% Max. Transmission Rate 10 Mbps R L=100Ω; Figure 3a Propagation Delay T A @ 25°C & VCC = +5V only tPHL 50 80 100 ns Figure 3a and 5; tPLH 50 80 100 ns R DIFF=100Ω Differential Driver Skew 20 40 ns | t PHL – 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 +7.0 Volts HIGH Input Current Refer to Rec. input graph LOW Input Current Refer to Rec. input graph Receiver Sensitivity ±0.3 Volts V CM = +7V to –7V Input Impedance 4 k Ω VIN = +10V to –10V Max. Transmission Rate 10 Mbps Propagation Delay T A @ 25°C & VCC = +5V only tPHL 80 110 180 ns Figure 3a and 7; A is invert- tPLH 80 110 180 ns ing and B is non-inverting. Differential Receiver Skew 30 ns | t PHL – tPLH |; TA @ +25°C RS-232 DRIVER (V.28) TTL Input Level VIL 0.8 Volts VIH 2.0 Volts
Rev: A Date:1/27/04 SP504 Multi–Mode Serial Transceivers © Copyright 2004 Sipex Corporation SPECIFICATIONS (Continued) TA = +25°C and VCC = +5.0V unless otherwise noted. MIN. TYP. MAX. UNITS CONDITIONS RS-232 DRIVER (V.28) Outputs HIGH Level Output +5.0 +15 Volts R L=3kΩ, VIN=0.8V LOW Level Output –15.0 –5.0 Volts R L=3kΩ, VIN=2.0V Open Circuit Voltage –15 +15 Volts Short Circuit Current ±100 mA V OUT = 0V Power Off Impedance 300 Ω Vcc = 0V, Vout = ±2.0V Slew Rate 30 V/ µsR L=3kΩ, CL= 50pF VCC = +5.0V, TA @ +25°C Transition Time 1.56 µsR L=3kΩ, CL=2500pF ; between ±3V, TA @ +25 °C Max. Transmission Rate 120 230.4 kbps R L=3kΩ, CL=2500pF Propagation Delay T A @ 25°C & VCC = +5V only tPHL 0.5 1 4 µs Measured from 1.5V of VIN tPLH 0.5 1 4 µs to 50% of VOUT ; R L=3kΩ RS-232 RECEIVER (V.28) TTL Output Levels VOL 0.4 Volts VOH 2.4 Volts Input HIGH Threshold 1.7 3.0 Volts LOW Threshold 0.8 1.2 Volts Receiver Open Circuit Bias +2.0 Volts Input Impedance 3 5 7 k Ω V IN = +15V to –15V Max. Transmission Rate 120 230.4 kbps Propagation Delay T A @ 25°C & VCC = +5V only tPHL 0.05 0.25 1 µs Measured from 50% of VIN tPLH 0.05 0.25 1 µs to 1.5V of VOUT . RS-423 DRIVER (V.10) TTL Input Levels VIL 0.8 Volts VIH 2.0 Volts Output Open Circuit Voltage, VO ±4.0 ±6.0 Volts R L=3.9kΩ HIGH Level Output, VT +3.6 +6.0 Volts R L=450Ω; VOUT ≥ 0.9VOC LOW Level Output, VT –6.0 –3.6 Volts R L=450Ω; VOUT ≥ 0.9VOC 0.9VOC Volts T A =+25˚C,, VCC = +5.0V Short Circuit Current ±150 mA V OUT = 0V, VCC = +5.0V Power Off Current ±100 µAV CC = 0V, VOUT = ±0.25V Transition Time 100 ns Rise/fall time, between ±3V Max. Transmission Rate 120 kbps R L=450Ω Propagation Delay T A @ 25°C & VCC = +5V only tPHL 0.05 0.5 2 µs Measured from 1.5V of VIN tPLH 0.05 0.5 2 µs to 50% of VOUT ; RL=450Ω 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 Rec. input graph LOW Input Current Refer to Rec. input graph Receiver Sensitivity ±0.3 Volts V CM = +7V to –7V Input Impedance 4 k Ω VIN = +10V to –10V Max. Transmission Rate 120 kbps
Rev: A Date:1/27/04 SP504 Multi–Mode Serial Transceivers © Copyright 2004 Sipex Corporation SPECIFICATIONS (Continued) TA = +25°C and VCC = +5.0V unless otherwise noted. MIN. TYP. MAX. UNITS CONDITIONS RS-423 RECEIVER (V.10) Propagation Delay T A @ 25°C & VCC = +5V only tPHL 0.05 0.2 1 µs Measured from 50% of VIN tPLH 0.05 0.2 1 µs to 1.5V of VOUT POWER REQUIREMENTS VCC 4.75 5.00 5.25 Volts ICC (no interface selected) 30 mA V CC =5.0V (RS-232 Mode) 140 mA f IN = 120kbps. Drivers loaded. (RS-422 Mode) 320 mA f IN = 2Mbps. Drivers loaded. (RS-449 Mode) 320 mA f IN = 2Mbps. Drivers loaded. (EIA-530 Mode) 320 mA f IN = 2Mbps. Drivers loaded. (EIA-530A Mode) 320 mA f IN = 2Mbps. Drivers loaded. (RS-485 Mode) 370 mA f IN = 2Mbps. Drivers loaded. (V.35 Mode) 210 mA f IN = 2Mbps. Drivers loaded. (V.36 Mode) 310 mA f IN = 2Mbps. Drivers loaded. ENVIRONMENTAL AND MECHANICAL Operating Temperature Range 0 +70 °C Storage Temperature Range –65 +150 °C Package 80–pin QFP RECEIVER INPUT GRAPHS +3.25mA –3.25mA +10V+3V –3V–10V Maximum Input Current versus Voltage RS-422 RECEIVER +3.25mA –3.25mA +10V+3V –3V–10V Maximum Input Current versus Voltage RS-423 RECEIVER +1.0mA –0.6mA +12V+6V –3V–7V
1 Unit Load
Rev: A Date:1/27/04 SP504 Multi–Mode Serial Transceivers © Copyright 2004 Sipex Corporation 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. V Input Voltages: Output Voltages: 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 125°C in order remove moisture prior to soldering. Sipex ships the 80-pin QFP in Dry Vapor Barrier Bags with a humidity indicator card and desiccant pack. The hu- midity indicator should be below 30%RH. Package Derating: ø 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 µsC L = 100pF, Fig. 4 ; S2 closed tPZH ; Tri-state to Output HIGH 0.40 2.0 µsC L = 100pF, Fig. 4 ; S2 closed tPLZ ; Output LOW to Tri-state 0.20 2.0 µsC L = 100pF, Fig. 4 ; S2 closed tPHZ ; Output HIGH to Tri-state 0.40 2.0 µsC L = 100pF, Fig. 4 ; S2 closed RS-423 MODE tPZL ; Tri-state to Output LOW 0.15 2.0 µsC L = 100pF, Fig. 4 ; S2 closed tPZH ; Tri-state to Output HIGH 0.20 2.0 µsC L = 100pF, Fig. 4 ; S2 closed tPLZ ; Output LOW to Tri-state 0.20 2.0 µsC L = 100pF, Fig. 4 ; S2 closed tPHZ ; Output HIGH to Tri-state 0.15 2.0 µsC L = 100pF, Fig. 4 ; S2 closed RS-422, RS-485 MODES tPZL ; Tri-state to Output LOW 2.80 10.0 µsC L = 100pF, Fig. 4 & 6; S1 closed tPZH ; Tri-state to Output HIGH 0.10 2.0 µsC L = 100pF, Fig. 4 & 6; S2 closed tPLZ ; Output LOW to Tri-state 0.10 2.0 µsC L = 15pF, Fig. 4 & 6; S1 closed tPHZ ; Output HIGH to Tri-state 0.10 2.0 µsC L = 15pF, Fig. 4 & 6; S2 closed V.35 MODE tPZL ; Tri-state to Output LOW 2.60 10.0 µsC L = 100pF, Fig. 4 & 6; S1 closed tPZH ; Tri-state to Output HIGH 0.10 2.0 µsC L = 100pF, Fig. 4 & 6; S2 closed
Rev: A Date:1/27/04 SP504 Multi–Mode Serial Transceivers © Copyright 2004 Sipex Corporation OTHER AC CHARACTERISTICS (Continued) TA = +70°C to 0°C and VCC = +4.75V to +5.25V unless otherwise noted. PARAMETER MIN. TYP. MAX. UNITS CONDITIONS V.35 MODE tPLZ ; Output LOW to Tri-state 0.10 2.0 µsC L = 15pF, Fig. 4 & 6; S1 closed tPHZ ; Output HIGH to Tri-state 0.15 2.0 µsC L = 15pF, Fig. 4 & 6; S2 closed RECEIVER DELAY TIME BETWEEN ACTIVE MODE AND TRI-STATE MODE RS-232 MODE tPZL ; Tri-state to Output LOW 0.12 2.0 µsC L = 100pF, Fig. 2 ; S1 closed tPZH ; Tri-state to Output HIGH 0.10 2.0 µsC L = 100pF, Fig. 2 ; S2 closed tPLZ ; Output LOW to Tri-state 0.10 2.0 µsC L = 100pF, Fig. 2 ; S1 closed tPHZ ; Output HIGH to Tri-state 0.10 2.0 µsC L = 100pF, Fig. 2 ; S2 closed RS-423 MODE tPZL ; Tri-state to Output LOW 0.10 2.0 µsC L = 100pF, Fig. 2 ; S1 closed tPZH ; Tri-state to Output HIGH 0.10 2.0 µsC L = 100pF, Fig. 2 ; S2 closed tPLZ ; Output LOW to Tri-state 0.10 2.0 µsC L = 100pF, Fig. 2 ; S1 closed tPHZ ; Output HIGH to Tri-state 0.10 2.0 µsC L = 100pF, Fig. 2 ; S2 closed RS-422/RS-485 MODES tPZL ; Tri-state to Output LOW 0.10 2.0 µsC L = 100pF, Fig. 2 & 8 ; S1 closed tPZH ; Tri-state to Output HIGH 0.10 2.0 µsC L = 100pF, Fig. 2 & 8 ; S2 closed tPLZ ; Output LOW to Tri-state 0.10 2.0 µsC L = 15pF, Fig. 2 & 8 ; S1 closed tPHZ ; Output HIGH to Tri-state 0.10 2.0 µsC L = 15pF, Fig. 2 & 8; S2 closed V.35 MODE tPZL ; Tri-state to Output LOW 0.10 2.0 µsC L = 100pF, Fig. 2 & 8; S1 closed tPZH ; Tri-state to Output HIGH 0.10 2.0 µsC L = 100pF, Fig. 2 & 8; S2 closed tPLZ ; Output LOW to Tri-state 0.10 2.0 µsC L = 15pF, Fig. 2 & 8; S1 closed tPHZ ; Output HIGH to Tri-state 0.10 2.0 µsC L = 15pF, Fig. 2 & 8; S2 closed TRANSCEIVER TO TRANSCEIVER SKEW [ (t phl – tplh)Trcvr1 – (tphl – tplh)TrcvrX ] RS-232 Driver 20 50 ns V CC = +5.0V, TA @ +25°C RS-232 Receiver 20 ns RS-422 Driver 20 50 ns V CC = +5.0V, TA @ +25°C RS-422 Receiver 20 ns RS-423 Driver 20 50 ns V CC = +5.0V, TA @ +25°C RS-423 Receiver 20 ns V.35 Driver 20 50 ns V CC = +5.0V, TA @ +25°C V.35 Receiver 20 ns
Rev: A Date:1/27/04 SP504 Multi–Mode Serial Transceivers © Copyright 2004 Sipex Corporation 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 61 — 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 RDEC 0 2 RDEC 1 3 RDEC 2 4 RDEC 3 5 TTEN 6 SCTEN 7 N/C 8 TDEC 3 9 TDEC 2 10 TDEC 1 11 TDEC 0 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 C 1+ 26 VDD 27 C 2+ 28 GND 29 C 1– 30 C 2– 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)
54 RS(a)
53 GND
52 RS(b)
51 LL(a)
50 GND
49 LL(b)
47 RL(a)
46 GND
45 RL(b)
44 ST(b)
43 GND
42 ST(a)
80 CTS
79 SCT
78 DSR
77 SCT(b)
76 SCT(a)
75 GND
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)
61 SD(a)
Rev: A Date:1/27/04 SP504 Multi–Mode Serial Transceivers © Copyright 2004 Sipex Corporation 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 — RDEC 0 – RDEC 3 — 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 12–9 — TDEC 0 – TDEC 3 — Transmitter decode register; configures transmitter modes; TTL inputs. Pin 23 — STEN — Enables ST driver; active low; TTL input. POWER SUPPLIES Pins 25, 33, 41, 48, 55, 62, 73, 74 — VCC — +5V input. Pins 29, 34, 43, 46, 50, 53, 57, 60, 64, 72, 75 — GND — Ground. Pin 27 — VDD +10V Charge Pump Capacitor — Connects from VDD to VCC . Suggested capaci- tor size is 22µF, 16V. Pin 32 — VSS –10V Charge Pump Capacitor — Connects from ground to VSS. Suggested ca- pacitor size is 22µF, 16V. Pins 26 and 30 — C1 + and C1 – — Charge Pump Capacitor — Connects from C1 + to C1 –. Sug- gested capacitor size is 22µF, 16V. Pins 28 and 31 — C2 + and C2 – — Charge Pump Capacitor — Connects from C2 + to C2 –. Sug- gested capacitor size is 22µF, 16V. NOTE: NC pins should be left floating; internal signals may be present.
Rev: A Date:1/27/04 SP504 Multi–Mode Serial Transceivers © Copyright 2004 Sipex Corporation 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 sig- nals with a minimum voltage output of ±3.6V (with 450Ω loading) and can operate up to 120kbps. Open circuit V OL and VOH measure- ments 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, ±1.5V differ- ential 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.11) 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 sig- nals 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 re- quirements 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 transpar- ent when the decoder is in all other modes. All of the differential drivers; RS-485, RS-422, and V.35, can operate up to 10Mbps. The driver inputs are both TTL or CMOS com- patible. 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. Since both V DD and VSS are separately gener- ated from VCC in a no–load condition, VDD and V SS 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 15kHz. The external capacitors must be a minimum of 22µF with a 16V 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 toler- ance should be ±5% from ±10V. The current drain for the supplies is used for RS-232 and RS-423 drivers. For the RS-232 driver, the cur- rent requirement will be 3.5mA per driver. The RS-423 driver worst case current drain will be 11mA per driver. Power sequencing is required for the SP504 . The supplies must be sequenced accordingly: +10V, +5V and –10V. An external circuit would be needed for proper power sup- ply sequencing. Consult factory for application circuitry. Drivers The SP504 has seven (7) enhanced independent 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 position 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 1 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 120kbps.
Rev: A Date:1/27/04 SP504 Multi–Mode Serial Transceivers © Copyright 2004 Sipex Corporation Receivers The SP504 has seven (7) independent receivers which can be programmed for the different interface modes. Control for the mode selection is done via a 4–bit control word that is indepen- dent from the driver control word. The coding for the drivers and receivers is identical. There- fore, 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-arranged for the specific requirements of the interface. As the operating mode of the receivers is changed, the electrical characteristics will change to sup- port 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 circuits — 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 ±15V and can receive signals up to 120kbps. 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 voltage range of ±7V. The RS-423 receivers can operate up to 120kbps. RS-423 receivers are used in RS-449, EIA-530, EIA-530A and V.36 modes as Category II sig- nals as indicated by their corresponding specifi- cations. 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 characteristics of an RS-422 (V.11) 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 con- trol line signals. The differential receivers can receive data up to 10Mbps. The RS-485 receivers are also used for the V.35 mode. Unlike the older implementations of differential or V.35 receivers, the SP504 con- tains an internal resistor termination network that ensures a V.35 input impedance of 100Ω (±10Ω) and a short-circuit impedance of 150Ω (±15Ω). The traditional V.35 implementations required external termination resistors to acheive the proper V.35 impedances. The internal net- work 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 receivers can operate up to 10Mbps. 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 ("1") at the receiver outputs. The single-ended RS-423 re- ceivers 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 differen- tial receivers have the same internal pull-up device on the non-inverting input which pro- duces a logic HIGH ("1") at the receiver output. The three differential receivers when config- ured 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 inter- face mode of the drivers or receivers via an 8–bit switch. The decoder for the drivers and receiv- ers 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 may represent other interface modes not specified (consult the fac-
Rev: A Date:1/27/04 SP504 Multi–Mode Serial Transceivers © Copyright 2004 Sipex Corporation tory for more information). The drivers are controlled with the data bits labeled TDEC3– TDEC 0. 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 con- nected at the (b) output. This resistor is part of the V.35 driver circuitry and should be con- nected when in V.35 mode. Tri-state is possible for all drivers in RS-232 mode. The receivers are controlled with data bits RDEC 3–RDEC 0; the code 0000 written to the receivers will place the outputs into tri-state mode. The 0000 de- coder 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 18) is a logic HIGH ("1") 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 18 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 simi- lar to the SP504 receiver outputs. This feature would reduce additional logic required by older traditional methods. NET1/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 ad- herence 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 NET1 and NET2. Consult factory for details.
Table 1. Driver Mode Selection Table 2. Receiver Mode Selection
Figure 18. Typical Operation Circuit
14 TxD
23 STEN
15 TxC
6 TTEN
13 DTR
16 RTS
Figure 19. Mode Diagram — RS-232
1 Disabled 1 Disabled 1 Enabled
0 Enabled 0 Enabled 0 Disabled
Figure 20. Mode Diagram — V.35
Figure 21. Mode Diagram — RS-422
Figure 22. Mode Diagram — RS-449
Figure 23. Mode Diagram — RS-485
Figure 24. Mode Diagram — EIA-530
1 Disabled 1 Disabled 1 •Enabled
0 Enabled 0 Enabled 0 •Disabled
Figure 25. Mode Diagram — EIA-530A
Figure 26. Mode Diagram — V.36
21 RX3 R3
Figure 28. Mode selection for the SP332
- Although many applications do not
configured to four different variations.
1 RS-449 Interchange Circuits Table
ing diode to ground on the two driver outputs. will adhere to the RS-423 specifications.
Figure 29. Adding extra differential and single-ended transceivers using the SP332 ±6V and VOUT ≥ ±3.6V with a 450Ω load.
Rev: A Date:1/27/04 SP504 Multi–Mode Serial Transceivers © Copyright 2004 Sipex Corporation
80 PIN MQFP (MS-022 BC)
5°-16° 0° MIN. 0°–7° 5°-16° L 0.30" RAD. TYP . 0.20" RAD. TYP . c PIN 1 D CL E CL DIMENSIONS Minimum/Maximum (mm) SYMBOL A b D E e N 80–PIN MQFP JEDEC MS-22 (BEC) Variation MIN NOM MAX 2.45 0.00 0.25 1.80 2.00 2.20 0.22 0.40
17.20 BSC
14.00 BSC
12.35 REF
0.65 BSC
c 0.11 23.00 L 0.73 0.88 1.03 L1 1.60 BASIC PACKAGE: 80 Pin MQFP
Rev: A Date:1/27/04 SP504 Multi–Mode Serial Transceivers © Copyright 2004 Sipex Corporation
ORDERING INFORMATION
Model Temperature Range Package Types Corporation ANALOG EXCELLENCE Sipex Corporation Headquarters and Sales Office
233 South Hillview Drive
Milpitas, CA 95035 TEL: (408) 934-7500 FAX: (408) 935-7600 Sales Office
22 Linnell Circle
Billerica, MA 01821 TEL: (978) 667-8700 FAX: (978) 670-9001 DATE REVISION DESCRIPTION 1/27/04 A Implemented tracking revision.