DS1691A/DS3691 (RS-422/RS-423) Line Drivers with TRI-STATE ® Outputs General Description Features The DS1691A/DS3691 are low power Schottky TTL line drivers designed to meet the requirements of EIA standards RS-422 and RS-423. They feature 4 buffered outputs with high source and sink current capability with internal short circuit protection. A mode control input provides a choice of operation either as 4 single-ended line drivers or 2 differential line drivers. A rise time control pin allows the use of an external capacitor to slow the rise time for suppression of near end crosstalk to other receivers in the cable. Rise time capacitors are primarily intended for waveshaping output signals in the single-ended driver mode. Multipoint applications in differential mode with waveshaping capacitors is not allowed. With the mode select pin low, the DS1691A/DS3691 are dual-differential line drivers with TRI-STATE outputs. They feature ± 10V output common-mode range in TRI-STATE mode and 0V output unbalance when operated with ± 5V supply. n Dual RS-422 line driver with mode pin low, or quad RS-423 line driver with mode pin high n TRI-STATE outputs in RS-422 mode n Short circuit protection for both source and sink outputs n Outputs will not clamp line with power off or in TRI-STATE n 100Ω transmission line drive capability n Low ICC and IEE power consumption RS-422: ICC = 9 mA/driver typ RS-423: ICC = 4.5 mA/driver typ: I EE = 2.5 mA/driver typ n Low current PNP inputs compatible with TTL, MOS and CMOS n Pin compatible with AM26LS30 Connection Diagrams With Mode Select HIGH (RS-423 Connection) With Mode Select LOW (RS-422 Connection) 00578302 00578301 Top View Top View Ordering Information Order Number Package Type NS Package Number DS3691M SO Package M16A DS3691N Molded DIP N16E For Complete Military Product Specifications, refer to the appropriate SMD or MDS. DS1691AJ/883 Ceramic DIP J16A TRI-STATE ® is a registered trademark of National Semiconductor Corporation. © 2004 National Semiconductor Corporation DS005783 www.national.com DS1691A/DS3691 (RS-422/RS-423) Line Drivers with TRI-STATE Outputs July 1998 DS1691A/DS3691 Absolute Maximum Ratings (Note 2) Operating Conditions If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Min Max Units VCC 4.5 5.5 V VEE −4.5 −5.5 V Supply Voltage DS1691A Supply Voltage VCC 7V VEE −7V DS3691 Maximum Power Dissipation (Note 1) at 25˚C Cavity Package 1509 mW Molded DIP Package 1476 mW SO Package 1051 mW Input Voltage Storage Temperature 5.25 V −5.25 V −55 +125 ˚C 0 +70 ˚C DS1691A DS3691 ± 15V Note 1: Derate cavity package 10.1 mW/˚C above 25˚C; derate molded DIP package 11.9 mW/˚C above 25˚C. Derate SO package 8.41 mW/˚C above 25˚C. −65˚C to + 150˚C Lead Temperature (Soldering, 4 seconds) 4.75 −4.75 Temperature (TA) 15V Output Voltage (Power OFF) VCC VEE 260˚C DC Electrical Characteristics (Notes 3, 4, 5, 6) Symbol Parameter Conditions Min Typ Max Units RS-422 CONNECTION, VEE CONNECTION TO GROUND, MODE SELECT ≤ 0.8V VIH High Level Input Voltage 2 V VIL Low Level Input Voltage IIH High Level Input Current VIN = 2.4V VIN ≤ 15V 10 100 µA IIL Low Level Input Current VIN = 0.4V −30 −200 µA I IN = −12 mA RL = ∞ −1.5 V 1 0.8 V 40 µA VI Input Clamp Voltage VO Differential Output Voltage VO VA,B VT Differential Output Voltage RL = 100Ω VIN = 2V 2 2.4 VT VA,B VCC ≥ 4.75V VIN = 0.8V −2 −2.4 VOS, VOS Common-Mode Offset RL = 100Ω 2.5 3 V RL = 100Ω 0.05 0.4 V RL = 100Ω 0.05 0.4 V VIN = 2V 3.6 6.0 V VIN = 0.8V −3.6 −6.0 V V V Voltage |VT| − | VT | Difference in Differential Output Voltage |VOS| − | VOS | Difference in CommonMode Offset Voltage = 100Ω, VCC ≥ 4.75V VSS |VT − VT | R VCMR Output Voltage Common- VDISABLE = 2.4V L 4.0 4.8 V ± 10 V Mode Range IXA Output Leakage Current IXB Power OFF IOX TRI-STATE Output Current VCC = Max VEE = 0V and −5V VCMR ≥ −10V −100 µA ISA Output Short Circuit Current VIN = 0.4V VOA = 6V 80 150 mA VOB = 0V −80 −150 mA VOA = 0V −80 −150 mA VOB = 6V 80 150 mA 18 30 mA ISB ICC www.national.com Output Short Circuit Current VCC = 0V VIN = 2.4V Supply Current 2 VCMR = 10V 100 µA VCMR = −10V −100 µA VCMR ≤ 10V 100 µA (Note 6) TA = 25˚C Symbol Parameter Conditions Min Typ Max Units RS-422 CONNECTION, VCC = 5V, MODE SELECT = 0.8V tr Output Rise Time RL = 100Ω, CL = 500 pF (Figure 1 ) 120 200 ns tf Output Fall Time RL = 100Ω, CL = 500 pF (Figure 1 ) 120 200 ns tPDH Output Propagation Delay RL = 100Ω, CL = 500 pF (Figure 1 ) 120 200 ns tPDL Output Propagation Delay RL = 100Ω, CL = 500 pF (Figure 1 ) 120 200 ns tPZL TRI-STATE Delay RL = 450Ω, CL = 500 pF, CC = 0 pF (Figure 4 ) 250 350 ns tPZH TRI-STATE Delay RL = 450Ω, CL = 500 pF, CC = 0 pF (Figure 4 ) 180 300 ns tPLZ TRI-STATE Delay RL = 450Ω, CL = 500 pF, CC = 0 pF (Figure 4 ) 180 300 ns tPHZ TRI-STATE Delay RL = 450Ω, CL = 500 pF, CC = 0 pF (Figure 4 ) 250 350 ns Max Units DC Electrical Characteristics (Notes 3, 4, 5, 6) Symbol Parameter RS-423 CONNECTION, |VCC| = |V Conditions Min Typ EE|, MODE SELECT ≥ 2V VIH High Level Input Voltage VIL Low Level Input Voltage IIH High Level Input Current VIN = 2.4V VIN ≤ 15V IIL Low Level Input Current VIN = 0.4V VI Input Clamp Voltage IIN = −12 mA Output Voltage RL = ∞, (Note 7) VIN = 2V 4.0 VCC ≥ 4.75V VIN = 0.4V −4.0 RL = 450Ω VIN = 2.4V 3.6 4.1 V VCC ≥ 4.75V VIN = 0.4V −3.6 −4.1 V VO 2 VO VT Output Voltage VT V 0.8 V 40 µA 10 100 µA −30 −200 µA −1.5 V 4.4 6.0 V −4.4 −6.0 V 1 |VT| − | VT | Output Unbalance |V 0.02 0.4 V IX+ Output Leakage Power OFF VCC = V EE = 0V VO = 6V 2 100 µA IX− Output Leakage Power OFF VCC = V EE = 0V VO = −6V −2 −100 µA IS + Output Short Circuit Current VO = 0V VIN = 2.4V −80 −150 mA IS− Output Short Circuit Current VO = 0V VIN = 0.4V 80 150 mA ISLEW Slew Control Current ICC Positive Supply Current V IEE Negative Supply Current V CC| = |VEE| = 4.75V, R L = 450Ω ± 140 µA IN = 0.4V, RL = ∞ 18 30 mA IN = 0.4V, RL = ∞ −10 −22 mA Note 2: “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the devices should be operated at these limits. The tables of “Electrical Characteristics” provide conditions for actual device operation. Note 3: Unless otherwise specified, min/max limits apply across the −55˚C to +125˚C temperature range for the DS1691A and across the 0˚C to +70˚C range for the DS3691. All typicals are given for V CC = 5V and TA = 25˚C. VCC and VEE as listed in operating conditions. Note 4: All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to ground unless otherwise specified. Note 5: Only one output at a time should be shorted. Note 6: Symbols and definitions correspond to EIA RS-422 and/or RS-423 where applicable. Note 7: At −55˚C, the output voltage is +3.9V minimum and −3.9V minimum. AC Electrical Characteristics (Note 6) TA = 25˚C Symbol Parameter Conditions Min Typ Max Units RS-423 CONNECTION, VCC = 5V, VEE −5V, MODE SELECT = 2.4V tr Rise Time RL = 450Ω, CL = 500 pF, CC = 0 (Figure 2 ) 120 300 ns tf Fall Time RL = 450Ω, CL = 500 pF, CC = 0 (Figure 2 ) 120 300 ns tr Rise Time RL = 450Ω, CL = 500 pF CC = 50 pF (Figure 3 ) 3.0 tf Fall Time RL = 450Ω, CL = 500 pF CC = 50 pF (Figure 3 ) 3.0 µs trc Rise Time Coefficient RL = 450Ω, CL = 500 pF, CC = 50 pF (Figure 3 ) 0.06 µs/pF 3 µs www.national.com DS1691A/DS3691 AC Electrical Characteristics DS1691A/DS3691 AC Electrical Characteristics (Note 6) (Continued) TA = 25˚C Typ Max Units tPDH Symbol Output Propagation Delay Parameter RL = 450Ω, CL = 500 pF, CC = 0 (Figure 2 ) Conditions Min 180 300 ns tPDL Output Propagation Delay RL = 450Ω, CL = 500 pF, CC = 0 (Figure 2 ) 180 300 ns AC Test Circuits and Switching Time Waveforms 00578304 00578303 FIGURE 1. Differential Connection 00578305 00578306 FIGURE 2. RS-423 Connection www.national.com 4 DS1691A/DS3691 AC Test Circuits and Switching Time Waveforms (Continued) 00578307 00578308 FIGURE 3. Rise Time Control for RS-423 00578310 00578309 FIGURE 4. TRI-STATE Delays 5 www.national.com DS1691A/DS3691 Switching Waveforms 00578311 FIGURE 5. Typical Output Voltage Truth Table Operation RS-422 RS-423 Inputs Outputs Mode A (D) B (C) A (D) B (C) 0 0 0 0 1 0 0 1 TRI-STATE TRI-STATE 0 1 0 1 0 0 1 1 TRI-STATE TRI-STATE 1 0 0 0 0 1 0 1 0 1 1 1 0 1 0 1 1 1 1 1 Typical Application Information Fully Loaded RS-422 Interface 00578313 RS-422 Point to Point Application 00578314 www.national.com 6 DS1691A/DS3691 Typical Application Information (Continued) Fully Loaded RS-423 Interface 00578315 Differential Application with Rise Time Control 00578316 *Note: Controlled edge allows longer stub lengths. Multiple Drivers are NOT allowed. Dual RS-423 Inverting Driver 00578317 7 www.national.com DS1691A/DS3691 Typical Rise Time Control Characteristics (RS-423 Mode) Rise Time vs External Capacitor 00578312 www.national.com 8 DS1691A/DS3691 Physical Dimensions inches (millimeters) unless otherwise noted Ceramic Dual-In-Line Package (J) Order Number DS1691AJ/883 NS Package Number J16A SO Package (M) Order Number DS3691M NS Package Number M16A 9 www.national.com DS1691A/DS3691 (RS-422/RS-423) Line Drivers with TRI-STATE Outputs Physical Dimensions inches (millimeters) unless otherwise noted (Continued) Molded Dual-In-Line Package (N) Order Number DS3691N NS Package Number N16E LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. 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