SP320 EXAR | Alldatasheet
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Technical content
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50) 668-707 • www.exar.com SP320_00_092208
14 DRIN1
61 DRA1
59 DRB1
13 T1IN
58 T1OUT
16 T2IN
54 T2OUT
17 T3IN
47 T3OUT
24 T4IN
51 T4OUT
22 DRIN2
42 DRA2
44 DRB2
15 DRIN3
63 DRA3
65 DRB3
23 STEN
6 TTEN
29, 34, 43, 60, 64, 72 VDD C1+ C1- C2+ C2- VSS VCC 0.1µF +5V 25, 33, 41, 62, 73 5kΩ 5kΩ 5kΩ 100Ω 100Ω 400kΩ Vcc 400kΩ Vcc 400kΩ Vcc 400kΩ Vcc 400kΩ Vcc 400kΩ Vcc 400kΩ Vcc 100Ω
3 TS000
9 ENV35
+5V 5kΩ + + 0.1µF 0.1µF 0.1µFSP320
- 5Mbps Data Throughput
- +5V-Only, Single Supply Operation
- 3 Drivers, 3 Receivers – V.35
- 4 Drivers, 4 Receivers – RS-232
- 80-pin LQFP Surface Mount Packaging
- Pin Compatible with SP39 RCOUT1 1 NC 2 TS000 3 NC 4 NC 5 TTEN 6 RTEN 7 NC 8 ENV35 9 NC 10 NC 11 NC 12 T1IN 13 DRIN1 14 DRIN3 15 T2IN 16 T3IN 17 NC 18 R3OUT 19 RCOUT2 20 ROUT4 21 DRIN2 22 STEN 23 T4IN 24 VCC 25 C1+ 26 VDD 27 C2+ 28 GND 29 C1– 30 C2– 31 VSS 32 VCC 33 GND 34 R3IN 35 NC 36 RCA2 37 RCB2 38 R4IN 39 NC 40
60 GND
43 GND
41 VCC
80 R1OUT
79 RCOUT3
78 R2OUT
77 RCB3
76 RCA3
73 VCC
72 GND
71 RCB1
70 RCA1
68 R2IN
66 R1IN
64 GND
62 VCC
Note: NC (No Connection) pins should be left floating. Internal signals may be present.
description
The SP320 is a complete V.35 interface transceiver offering 3 drivers and 3 receivers of V.35, and 4 drivers and 4 receivers of RS-232 (V.28). An Exar patented charge pump allows +5V only low power operation. RS-232 drivers and receivers are specified to operate at 120kbps, all V.35 drivers and receivers operate up to 5Mbps. complete +5V-only V.35 interface with rs-232 (V.28) control Lines sp320
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50) 668-707 • www.exar.com SP320_00_092208 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 pArAMeter Min. tYp. MAX. Units conditions V.35 driVer TTL Input Level VIL 0.8 Volts TTL Input Level VIH 2.0 Volts Voltage Outputs Differential Outputs ±0.44 ±0.55 ±0.66 Volts RL = 100Ω from A to B Source Impedance 50 00 50 Ohms Short Circuit Impedance 35 50 65 Ohms Measured from A=B to GND, VOUT = -2V to +2V Voltage Output Offset -0.6 +0.6 Volts VOFFSET = (|VA| + |VB|)/ 2 AC Characteristics Transition Time 40 ns Rise/Fall time, 0% to 90% Maximum Transmission Rate 5 Mbps RL = 100Ω, VDIFF OUT = 0.55V+/-20% Propagation Delay tPHL 50 250 ns Measured from .5V of VIN to 50% of VOUT Propagation Delay tPLH 50 250 ns Measured from .5V of VIN to 50% of VOUT V.35 receiVer TTL Output levels VOL 0.4 Volts IOUT = -3.2mA VOH 2.4 Volts IOUT = .0mA Receiver Inputs Differential Input Threshold -0.3 +0.3 Volts Input Impedance 90 00 0 Ohms Short circuit Impedance 35 50 65 Ohms Measured from A=B to GND, VIN = -2V to +2V AC Characteristics Maximum Transmission Rate 5 Mbps VIN = +/-0.55V +/-20% Propagation Delay tPHL 50 250 ns Measured from 50% of VIN to .5V of ROUT Propagation Delay tPLH 50 250 ns Measured from 50% of VIN to .5V of ROUT ABsoLUte MAXiMUM rAtinGs
eLectricAL cHArActeristics
TMIN to TMAX and Vcc = 5V +/-5% unless otherwise noted.
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50) 668-707 • www.exar.com SP320_00_092208 TMIN to TMAX and Vcc = 5V +/-5% unless otherwise noted. pArAMeter Min. tYp. MAX. Units conditions rs-232 driVer TTL Input Level VIL 0.8 Volts TTL Input Level VIH 2.0 Volts Voltage Outputs High Level Output +5.0 +5.0 Volts RL = 3kΩ to GND Low Level Output -5.0 -5.0 Volts RL = 3kΩ to GND Open Circuit Voltage -5.0 +5.0 Volts RL = ∞ Short Circuit Current -00 +00 mA RL = GND Power Off Impedance 300 Ohms Vcc = 0V: VOUT = +/-2V AC Characteristics Slew Rate 30 V/µs RL = 3kΩ, CL = 50pF; From +3V to -3V or -3V to +3V, TA = 25°C, Vcc = +5V Maximum Transmission Rate 20 kbps RL = 3kΩ, CL = 2500pF Transition Time .56 µs Rise/fall time between +/-3V RL = 3kΩ, CL = 2500pF Propagation Delay tPHL 2 8 µs RL = 3kΩ, CL = 2500pF; from .5V of TIN to 50% of VOUT Propagation Delay tPLH 2 8 µs RL = 3kΩ, CL = 2500pF; from .5V of TIN to 50% of VOUT rs-232 receiVer TTL Output level Low VOL 0.4 Volts TTL Output level High VOH 2.4 Volts Receiver Input Input Voltage Range -5 +5 Volts High Threshold .7 3.0 Volts Low Threshold 0.8 .2 Volts Hysteresis 0.2 0.5 .0 Volts Vcc = 5V; TA = 25°C Receiver Input Circuit Bias +2.0V Volts Input Impedance 3 5 7 kOhms VIN = +/-5V AC Characteristics Maximum Transmission Rate 20 kbps Propagation Delay tPHL 0. µs Measured from 50% of RIN to .5V of ROUT Propagation Delay tPLH 0. µs Measured from 50% of RIN to .5V of ROUT power reqUireMents No Load Vcc Supply Current 35 70 mA No Load; Vcc = 5.0V; TA = 25°C Full Load Vcc Supply Current 60 mA RS-232 Drivers RL = 3kΩ to GND; DC Input V.35 Drivers RL = 100Ω from A to B; DC input Shutdown Current .5 mA TS000 = ENV35 = 0V
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50) 668-707 • www.exar.com SP320_00_092208 ±10Ω. 2. Resistance to ground of 150Ω ±15Ω, measured from short-circuited terminals. All of the V.35 receivers can operate at data rates as high as 5Mbps. The sensitivity of the V.35 receiver inputs is ±300mV. rs-232 (V.28) drivers The RS-232 drivers are inverting transmit - ters, which accept either TTL or CMOS inputs and output the RS-232 signals with an inverted sense relative to the input logic levels. Typically, the RS-232 output voltage swing is ±9V with no load, and ±5V minimum with full load. The transmitter outputs are protected against infinite short-circuits to ground without degradation in reliability. In the power off state, the output imped - ance of the RS-232 drivers will be greater than 300Ω over a ±2V range. Should the input of a driver be left open, an internal 400kΩ pullup resistor to V CC forces the input high, thus committing the output to a low state. The slew rate of the trans - mitter output is internally limited to a maximum of 30V/µs in order to meet the EIA standards. The RS-232 drivers are rated for 20kbps data rates. rs-232 (V.28) receivers The RS-232 receivers convert RS-232 input signals to inverted TTL signals. Each of the four receivers features 500mV of hysteresis margin to minimize the effects of noisy transmission lines. The inputs also have a 5kΩ resistor to ground; in an open circuit situation the input of the receiver will be forced low, committing the output to a logic high state. The input resistance will maintain 3kΩ-7kΩ over a ±15V range. The maximum operating voltage range for the receiver is ±30V, under these conditions the input current to the receiver must be limited to less than 00mA. The RS-232 receivers can operate to beyond 20kbps. cHArGe pUMp The charge pump is an Exar patented design (U.S. 5,306,954) and uses a unique approach compared to older less-efficient designs. The charge pump still requires four external tHeorY oF operAtion The sp320 is a single chip +5V-only serial transceiver that supports all the signals necessary to implement a full V.35 interface. Three V.35 drivers and three V.35 receivers make up the clock and data signals. Four RS-232 (V.28) drivers and four RS-232 (V.28) receivers are used for control line signals for the interface. V.35 drivers The V.35 drivers are +5V-only, low power voltage output transmitters. The drivers do not require any external resistor networks, and will meet the following requirements: 1. Source impedance in the range of 50Ω to 150Ω. 2. Resistance between short-circuited ter - minals and ground is 150Ω ±15Ω. 3. When terminated with a 100Ω resistive load the terminal to terminal voltage will be
0.55 Volts ±20% so that the A terminal is
positive to the B terminal when binary 0 is transmitted, and the conditions are reversed to transmit binary . 4. The arithmetic mean of the voltage of the A terminal with respect to ground, and the B terminal with respect to ground will not exceed 0.6 Volts when terminated as in 3 above. The V.35 drivers can operate at data rates as high as 5Mbps. The driver outputs are protected against short-circuits between the A and B outputs and short circuits to ground. Two of the V.35 drivers, DRIN2 and DRIN3 are equipped with enable control lines. When the enable pins are high the driver outputs are disabled, the output impedance of a disabled driver will nominally be 300Ω. When the en- able pins are low, the drivers are active. V.35 receivers The V.35 receivers are +5V only, low power differential receivers which meet the follow- ing requirements: 1. Input impedance in the range of 100Ω
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50) 668-707 • www.exar.com SP320_00_092208 phase 4 -Vdd transfer- The fourth phase of the clock connects the negative terminal of C2 to ground and transfers the generated +0V across C2 to C4, the Vdd storage capacitor. Again, simultaneously with this, the positive side of capacitor C is switched to +5V and the negative side is connected to ground, and the cycle begins again. Since both V+ and V- are separately gener- ated from Vcc in a no load condition, V+and V- will be symmetrical. Older charge pump approaches that generate V- from V+ will show a decrease in the magnitude of V- com- pared to V+ due to the inherent inefficiencies in the design. The clock rate for the charge pump typically operates at 5kHz. The external capaci - tors must be 0.µF with a 6V breakdown rating. shutdown Mode The SP320 can be put into a low power shutdown mode by bringing both TS000 (pin 3) and ENV35 (pin 9) low. In shutdown mode, the SP320 will draw less than 2mA of supply current. For normal operation, both pins should be connected to +5V. 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 voltages must be no greater than ±0V. The current drain from the ±0V sup - plies is used for the RS-232 drivers. For the RS-232 driver the current re - quirement will be 3.5mA per driver. It is critical the external power supplies provide a power supply sequence of : +0V, +5V, and then -0V. Applications information The SP320 is a single chip device that can im- plement a complete V.35 interface. Three (3) V.35 drivers and three (3) V.35 receivers are used for clock and data signals and four (4) RS-232 (V.28) drivers and four (4) RS-232 (V.28) receivers can be used for the control signals of the interface. The following ex - amples show the SP320 configured in either a DTE or DCE application. +0V a) C2 GND GND b) C2 –0V Figure . Charge Pump Waveforms capacitors, but uses a four-phase voltage shifting technique to attain symmetrical ±0V power supplies. The capacitors can be as low as 0.µF with a 6 Volt rating. Polarized or non-polarized capacitors can be used. Figure (a) shows the waveform found on the positive side of capacitor C2, and Figure (b) shows the negative side of capacitor C2. There is a free-running oscillator that controls the four phases of the voltage shifting. A description of each phase follows. phase 1 -Vss charge storage- During this phase of the clock cycle, the positive side of capactors C and C2 are initially charged to +5V. C+ is then switched to ground and the charge in C- is transferred to C2-. Since C2+ is con- nected to +5V, the voltage potential across capacitor C2 is now 0V. phase 2 -Vss transfer- Phase two of the clock con - nects the negative terminal of C2 to the Vss storage capacitor and the positive terminal of C2 to ground, and transfers the generated -0V to C3. Simultaneously, the positive side of capacitor C is switched to +5V and the negative side is connected to ground. phase 3 -Vdd charge storage- The third phase of the clock is identical to the first phase- the transferred charge in C produces -5V in the negative terminal of C, which is applied to the negative side of capacitor C2. Since C2+ is at +5V, the voltage potential across C2 is +0V.
Figure 7. Typical DTE-DCE V.35 Connection with the SP320
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50) 668-707 • www.exar.com SP320_00_092208 104(A) 104(B) CTS 106 DSR 107 DCD 109 RI 125 RXC 115(A) 115(B) TXCC 114(A) 114(B) 103(A) 103(B) TXD 113(A) TXC 113(B) RTS 105 DTR 108 RLPBK 140 LLPBK 141 SPARE SPARE SPARE 29, 34, 43, 60, 64, 72 VDD C1+ C1- C2+ C2- VSS VCC 0.1µF 0.1 0.1 0.1 +5V 25, 33, 41, 62, 73 5kΩ 5kΩ 5kΩ 100Ω 100Ω 400KΩ Vcc 400kΩ Vcc 400kΩ Vcc 400kΩ Vcc 400kΩ Vcc 400kΩ Vcc 400kΩ Vcc 100Ω +5V 5kΩ µF µF µFSP320 A Chasis Ground C Request to Send E DCE Ready (DSR) H DTE Ready (DTR) K Unassigned--- M Unassigned--- P Transmitted Data (A) S Transmitted Data (B) U Terminal Timing (A) } 3(A) W Terminal Timing (B) } 113(B) Y Transmit Timing (A) } 4(A) AA Transmit Timing (B) } 114(B) CC Unassigned--- EE Unassigned--- HH Unassigned--- KK Unassigned--- MM Unassigned--- Signal Ground B Clear to Send D Data Carrier Detect F Ring Indicator J Local Loopback L Remote Loopback N Receive Data (A) R Receive Data (B) T Receive Timing (A) V Receive Timing (B) X Unassigned--- Z Unassigned--- BB Unassigned--- DD Unassigned--- FF Unassigned--- JJ Unassigned--- LL Test Mode NN iso-2593 connector pin out typical dce V.35 interface
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50) 668-707 • www.exar.com SP320_00_092208 29, 34, 43, 60, 64, 72 VDD C1+ C1- C2+ C2- VSS VCC 0.1µF +5V 25, 33, 41, 62, 73 5kΩ 5kΩ 5kΩ 100Ω 100Ω 400kΩ Vcc 400kΩ Vcc 400kΩ Vcc 400kΩ Vcc 400kΩ Vcc 400kΩ Vcc 400kΩ Vcc 100Ω +5V TXD 103(A) 103(B) RTS 105 DTR 108 RLPBK 140 LLPBK 141 SPARE SPARE SPARE TXCT 113(A) 113(B) 104(A) 104(B) RXD 114(A) TXCC 114(B) 106 CTS 107 DSR 109 DCD 125 RI 115(A) RXC 115(B) 5kΩ 0.1µF 0.1µF 0.1µF SP320 A Chasis Ground C Request to Send E DCE Ready (DSR) H DTE Ready (DTR) K Unassigned--- M Unassigned--- P Transmitted Data (A) S Transmitted Data (B) U Terminal Timing (A) } 3(A) W Terminal Timing (B) } 113(B) Y Transmit Timing (A) } 4(A) AA Transmit Timing (B) } 114(B) CC Unassigned--- EE Unassigned--- HH Unassigned--- KK Unassigned--- MM Unassigned--- Signal Ground B Clear to Send D Data Carrier Detect F Ring Indicator J Local Loopback L Remote Loopback N Receive Data (A) R Receive Data (B) T Receive Timing (A) V Receive Timing (B) X Unassigned--- Z Unassigned--- BB Unassigned--- DD Unassigned--- FF Unassigned--- JJ Unassigned--- LL Test Mode NN iso-2593 connector pin out typical dte V.35 interface
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50) 668-707 • www.exar.com SP320_00_092208 29, 34, 43, 60, 64, 72 VDD C1+ C1- C2+ C2- VSS VCC 0.1µF +5V 25, 33, 41, 62, 73 5kΩ 5kΩ 5kΩ 100Ω 100Ω 400kΩ Vcc 400kΩ Vcc 400kΩ Vcc 400kΩ Vcc 400kΩ Vcc 400kΩ Vcc 400kΩ Vcc 100Ω +5V 5kΩ + + 0.1µF 0.1µF 0.1µFSP320 Pin configuration typical application circuit RCOUT1 1 NC 2 TS000 3 NC 4 NC 5 TTEN 6 RTEN 7 NC 8 ENV35 9 NC 10 NC 11 NC 12 T1IN 13 DRIN1 14 DRIN3 15 T2IN 16 T3IN 17 NC 18 R3OUT 19 RCOUT2 20 ROUT4 21 DRIN2 22 STEN 23 T4IN 24 VCC 25 C1+ 26 VDD 27 C2+ 28 GND 29 C1– 30 C2– 31 VSS 32 VCC 33 GND 34 R3IN 35 NC 36 RCA2 37 RCB2 38 R4IN 39 NC 40 Note: NC (No Connection) pins should be left floating. Internal signals may be present.
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50) 668-707 • www.exar.com SP320_00_092208 pAckAGe: 80 pin LqFp
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50) 668-707 • www.exar.com SP320_00_092208
ORDERING INFORMATION
Model Temperature Range Package Types DATE REVSION DESCRIPTION 03-23-07 Rev B Legacy Sipex Data Sheet 9-22-08 .0.0 SP320 is no longer available in MQFP package per PCN 07-1102-06a. Update package drawing outline to show LQFP. Change to Exar data sheet format, update ordering information and changed revision to .0.0. 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 September 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.