DS3691 (RS-422/RS-423) Line Drivers with TRI-STATE(R) Outputs General Description Features The DS3691 is a low power Schottky TTL line driver designed to meet the requirements of EIA standards RS-422 and RS-423. It features 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 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. Dual RS-422 line driver with mode pin low, or quad RS-423 line driver with mode pin high TRI-STATE outputs in RS-422 mode Short circuit protection for both source and sink outputs Outputs will not clamp line with power off or in TRI-STATE 100 transmission line drive capability 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 Low current PNP inputs compatible with TTL, MOS and CMOS Pin compatible with AM26LS30 Connection Diagrams With Mode Select LOW (RS-422 Connection) With Mode Select HIGH (RS-423 Connection) 578302 578301 Top View Top View Ordering Information Package Type Package Number DS3691M/NOPB Order Number, Flow SO Package M16A Delivery Method, Quantity Rail, 48 DS3691MX/NOPB SO Package M16A Reel, 2500 All DS1691A, DS3691N versions are OBSOLETE and are no longer offered. See Website for current Ordering Information. TRI-STATE(R) is a registered trademark of National Semiconductor Corporation. (c) 2012 Texas Instruments Incorporated 5783 SNLS357D www.ti.com DS3691 (RS-422/RS-423) Line Drivers with TRI-STATE Outputs April 24, 2012 DS3691 Storage Temperature Lead Temperature (Soldering, 4 seconds) Absolute Maximum Ratings (Note 2) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and specifications. Supply Voltage VCC VEE Maximum Power Dissipation (Note 1) at 25C SO Package Input Voltage Output Voltage (Power OFF) DC Electrical Characteristics Symbol -65C to + 150C 260C Operating Conditions 7V -7V Supply Voltage VCC VEE Temperature (TA) 1051 mW 15V 15V Min Max Units 4.75 -4.75 0 5.25 -5.25 +70 V V C Note 1: Derate SO package 8.41 mW/C above 25C. (Note 3, Note 4, Note 5, Note 6) Parameter Conditions Min Typ Max Units RS-422 CONNECTION, VEE CONNECTION TO GROUND, MODE SELECT 0.8V VIH High Level Input Voltage VIL Low Level Input Voltage IIH High Level Input Current 2 V 0.8 V VIN = 2.4V 1 40 A VIN 15V 10 100 A -30 -200 A -1.5 V 3.6 6.0 V -3.6 -6.0 V IIL Low Level Input Current VIN = 0.4V VI Input Clamp Voltage I IN = -12 mA VO Differential Output Voltage RL = VO VA,B VT Differential Output Voltage RL = 100 VIN = 2V 2 2.4 V VT VA,B VCC 4.75V VIN = 0.8V -2 -2.4 V VOS, VOS Common-Mode Offset RL = 100 2.5 3 V RL = 100 0.05 0.4 V RL = 100 0.05 0.4 V VIN = 2V VIN = 0.8V Voltage |VT| - | VT | Difference in Differential Output Voltage |VOS| - | VOS | Difference in CommonMode Offset Voltage VSS |VT - VT | R L = 100, VCC 4.75V 4.0 VCMR Output Voltage Common- VDISABLE = 2.4V 10 4.8 V V Mode Range IXA Output Leakage Current IXB Power OFF IOX TRI-STATE Output Current VCMR = 10V 100 A VCMR = -10V -100 A VCC = Max VCMR 10V 100 A VEE = 0V and -5V VCMR -10V -100 A VOA = 6V 80 150 mA VOB = 0V -80 -150 mA VOA = 0V -80 -150 mA VOB = 6V 80 150 mA 18 30 mA VCC = 0V ISA Output Short Circuit Current VIN = 0.4V ISB Output Short Circuit Current VIN = 2.4V ICC Supply Current www.ti.com 2 DS3691 AC Electrical Characteristics (Note 6) TA = 25C Symbol Parameter Conditions Min Typ Max Units RS-422 CONNECTION, VCC = 5V, MODE SELECT = 0.8V tr Output Rise Time RL = 100, CL = 500 pF (Figure 1 ) 120 200 ns tf Output Fall Time RL = 100, CL = 500 pF (Figure 1 ) 120 200 ns tPDH Output Propagation Delay RL = 100, CL = 500 pF (Figure 1 ) 120 200 ns tPDL Output Propagation Delay RL = 100, CL = 500 pF (Figure 1 ) 120 200 ns tPZL TRI-STATE Delay RL = 450, CL = 500 pF, CC = 0 pF (Figure 4 ) 250 350 ns tPZH TRI-STATE Delay RL = 450, CL = 500 pF, CC = 0 pF (Figure 4 ) 180 300 ns tPLZ TRI-STATE Delay RL = 450, CL = 500 pF, CC = 0 pF (Figure 4 ) 180 300 ns tPHZ TRI-STATE Delay RL = 450, CL = 500 pF, CC = 0 pF (Figure 4 ) 250 350 ns Max Units DC Electrical Characteristics Symbol (Note 3, Note 4, Note 5, Note 6) Parameter Conditions Min Typ RS-423 CONNECTION, |VCC| = |V EE|, MODE SELECT 2V VIH High Level Input Voltage VIL Low Level Input Voltage IIH High Level Input Current 2 V 0.8 V VIN = 2.4V 1 40 A VIN 15V 10 100 A -30 -200 A -1.5 V IIL Low Level Input Current VIN = 0.4V VI Input Clamp Voltage IIN = -12 mA VO Output Voltage RL = , (Note 7) VIN = 2V 4.0 4.4 6.0 V VCC 4.75V VIN = 0.4V -4.0 -4.4 -6.0 V RL = 450 VIN = 2.4V 3.6 4.1 V VCC 4.75V VIN = 0.4V -3.6 -4.1 V VO VT Output Voltage VT |VT| - | VT | Output Unbalance |V CC| = |VEE| = 4.75V, R L = 450 0.02 0.4 V IX+ Output Leakage Power OFF VCC = V EE = 0V VO = 6V 2 100 A IX- Output Leakage Power OFF VCC = V EE = 0V VO = -6V -2 -100 A 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 IN = 0.4V, RL = 18 30 mA IEE Negative Supply Current V IN = 0.4V, RL = -10 -22 mA A 140 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 -55C to +125C temperature range for the DS1691A and across the 0C to +70C range for the DS3691. All typicals are given for V CC = 5V and TA = 25C. 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 -55C, the output voltage is +3.9V minimum and -3.9V minimum. 3 www.ti.com DS3691 AC Electrical Characteristics (Note 6) TA = 25C Symbol Parameter Conditions Min Typ Max Units RS-423 CONNECTION, VCC = 5V, VEE -5V, MODE SELECT = 2.4V tr Rise Time RL = 450, CL = 500 pF, CC = 0 (Figure 2 ) 120 300 ns tf Fall Time RL = 450, CL = 500 pF, CC = 0 (Figure 2 ) 120 300 ns tr Rise Time RL = 450, CL = 500 pF CC = 50 pF (Figure 3 ) 3.0 s tf Fall Time RL = 450, CL = 500 pF CC = 50 pF (Figure 3 ) 3.0 s trc Rise Time Coefficient RL = 450, CL = 500 pF, CC = 50 pF (Figure 3 ) 0.06 s/pF tPDH Output Propagation Delay RL = 450, CL = 500 pF, CC = 0 (Figure 2 ) 180 300 ns tPDL Output Propagation Delay RL = 450, CL = 500 pF, CC = 0 (Figure 2 ) 180 300 ns AC Test Circuits and Switching Time Waveforms 578304 578303 FIGURE 1. Differential Connection www.ti.com 4 DS3691 578305 578306 FIGURE 2. RS-423 Connection 578307 578308 FIGURE 3. Rise Time Control for RS-423 5 www.ti.com DS3691 578310 578309 FIGURE 4. TRI-STATE Delays Switching Waveforms 578311 FIGURE 5. Typical Output Voltage Truth Table Inputs Operation www.ti.com Outputs Mode A (D) B (C) A (D) B (C) RS-422 0 0 0 0 0 0 1 1 0 1 0 1 0 TRI-STATE 1 TRI-STATE 1 TRI-STATE 0 TRI-STATE RS-423 1 1 1 1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 1 6 DS3691 Typical Application Information Fully Loaded RS-422 Interface 578313 RS-422 Point to Point Application 578314 Fully Loaded RS-423 Interface 578315 Differential Application with Rise Time Control 578316 *Note: Controlled edge allows longer stub lengths. Multiple Drivers are NOT allowed. Dual RS-423 Inverting Driver 578317 7 www.ti.com DS3691 Typical Rise Time Control Characteristics (RS-423 Mode) Rise Time vs External Capacitor 578312 www.ti.com 8 DS3691 Physical Dimensions inches (millimeters) unless otherwise noted SO Package (M) Order Number DS3691M NS Package Number M16A 9 www.ti.com DS3691 (RS-422/RS-423) Line Drivers with TRI-STATE Outputs Notes www.ti.com IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI's terms and conditions of sale supplied at the time of order acknowledgment. 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