AM26LS31 QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114F - JANUARY 1979 - REVISED OCTOBER 2001 D D D D D D D, DB, OR N PACKAGE (TOP VIEW) Meets or Exceeds the Requirements of ANSI TIA/EIA-422-B and ITU Recommendation V.11 Operates From a Single 5-V Supply TTL Compatible Complementary Outputs High Output Impedance in Power-Off Conditions Complementary Output-Enable Inputs 1A 1Y 1Z G 2Z 2Y 2A GND 1 16 2 15 3 14 4 13 5 12 6 11 7 10 8 9 VCC 4A 4Y 4Z G 3Z 3Y 3A description The AM26LS31 is a quadruple complementary-output line driver designed to meet the requirements of ANSI TIA/EIA-422-B and ITU (formerly CCITT) Recommendation V.11. The 3-state outputs have high-current capability for driving balanced lines such as twisted-pair or parallel-wire transmission lines, and they provide a high-impedance state in the power-off condition. The enable function is common to all four drivers and offers the choice of an active-high or active-low enable (G, G) input. Low-power Schottky circuitry reduces power consumption without sacrificing speed. The AM26LS31 is characterized for operation from 0C to 70C. AVAILABLE OPTIONS PACKAGED DEVICES TA PLASTIC SMALL OUTLINE (D) PLASTIC SHRINK SMALL OUTLINE (DB) PLASTIC DIP (N) 0C to 70C AM26LS31CD AM26LS31CDB AM26LS31CN The DB package is only available taped and reeled. Add the suffix R to the device type (e.g., AM26LS31CDBR). FUNCTION TABLE (each driver) INPUT A ENABLES OUTPUTS G G Y Z H H X H L L H X L H H X L H L L X L L H X L H Z Z H = high level, L = low level, X = irrelevant, Z = high impedance (off) Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Copyright 2001, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 1 AM26LS31 QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114F - JANUARY 1979 - REVISED OCTOBER 2001 logic diagram (positive logic) G G 4 12 2 1A 1 3 6 2A 7 5 10 3A 9 11 14 4A 15 13 1Y 1Z 2Y 2Z 3Y 3Z 4Y 4Z schematic (each driver) Input A V 22 k 9 9 Output Z Output Y Common to All Four Drivers VCC V 22 k 22 k To Three Other Drivers Enable G Enable G GND All resistor values are nominal. 2 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 AM26LS31 QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114F - JANUARY 1979 - REVISED OCTOBER 2001 absolute maximum ratings over operating free-air temperature range (unless otherwise noted) Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Output off-state voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V Package thermal impedance, JA (see Note 2): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73C/W DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82C/W N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67C/W Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65C to 150C Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. All voltage values, except differential output voltage VOD, are with respect to network GND. 2. The package thermal impedance is calculated in accordance with JESD 51-7. recommended operating conditions MIN NOM MAX UNIT 4.75 5 5.25 V VCC VIH Supply voltage VIL IOH Low-level input voltage 0.8 V High-level output current -20 mA IOL TA Low-level output current 20 mA 70 C High-level input voltage 2 Operating free-air temperature V 0 electrical characteristics over operating free-air temperature range (unless otherwise noted) PARAMETER VIK VOH Input clamp voltage VOL TEST CONDITIONS High-level output voltage VCC = 4.75 V, VCC = 4.75 V, II = -18 mA IOH = -20 mA Low-level output voltage VCC = 4.75 V, IOL = 20 mA VO = 0.5 V IOZ Off state (high-impedance-state) Off-state (high impedance state) output current VCC = 4 4.75 75 V II IIH Input current at maximum input voltage High-level input current VCC = 5.25 V, VCC = 5.25 V, IIL Low-level input current VCC = 5.25 V, IOS Short-circuit output current VCC = 5.25 V MIN TYP V V 0.5 -20 VO = 2.5 V VI = 7 V 20 0.1 VI = 2.7 V VI = 0.4 V * DALLAS, TEXAS 75265 UNIT -1.5 2.5 -30 ICC Supply current VCC = 5.25 V, All outputs disabled 32 All typical values are at VCC = 5 V and TA = 25C. Not more than one output should be shorted at a time, and duration of the short circuit should not exceed one second. POST OFFICE BOX 655303 MAX V A mA 20 A -0.36 mA -150 mA 80 mA 3 AM26LS31 QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114F - JANUARY 1979 - REVISED OCTOBER 2001 switching characteristics, VCC = 5 V, TA = 25C (see Figure 1) PARAMETER TEST CONDITIONS tPLH tPHL Propagation delay time, low-to-high-level output tPZH tPZL Output enable time to high level tPHZ tPLZ Output disable time from high level pF CL = 30 pF, Propagation delay time, high-to-low-level output Output disable time from low level Output-to-output skew TYP MAX 14 20 14 20 RL = 75 25 40 RL = 180 37 45 21 30 23 35 1 6 S1 and S2 open CL = 30 pF Output enable time to low level MIN CL = 10 pF, pF S1 and S2 closed CL = 30 pF, S1 and S2 open UNIT ns ns ns ns PARAMETER MEASUREMENT INFORMATION Input A (see Notes B and C) Test Point 3V 1.3 V 1.3 V 0V VCC tPHL tPLH 180 VOH 1.5 V Output Y S1 From Output Under Test VOL Skew 75 CL (see Note A) Skew tPLH tPHL S2 VOH 1.5 V Output Z VOL PROPAGATION DELAY TIMES AND SKEW Enable G (see Note D) Enable G TEST CIRCUIT 3V 1.5 V 1.5 V See Note D 0V tPLZ tPZL 4.5 V Waveform 1 (see Note E) S1 Closed S2 Open S1 Closed S2 Closed 1.5 V 1.5 V VOL 0.5 V tPZH tPHZ 0.5 V Waveform 2 (see Note E) S1 Open S2 Closed 1.5 V VOH 1.5 V 0 V S1 Closed S2 Closed ENABLE AND DISABLE TIME WAVEFORMS NOTES: A. B. C. D. E. CL includes probe and jig capacitance. All input pulses are supplied by generators having the following characteristics: PRR 1 MHz, ZO 50 , tr 15 ns, tf 6 ns. When measuring propagation delay times and skew, switches S1 and S2 are open. Each enable is tested separately. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control. Figure 1. Test Circuit and Voltage Waveforms 4 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 AM26LS31 QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114F - JANUARY 1979 - REVISED OCTOBER 2001 TYPICAL CHARACTERISTICS OUTPUT VOLTAGE vs ENABLE G INPUT VOLTAGE IIIIIIIIIIII IIIIIIIIIII IIIII IIIIIIIIIII IIIII IIIII VO - Y Output Voltage - V Load = 470 to GND TA = 25C See Note A 3 IIIIIII IIIIIII IIII IIIIIII IIII IIII IIIII IIIII 4 VCC = 5 V Load = 470 to GND See Note A VCC = 5.25 V VCC = 5 V VCC = 4.75 V 2 1 TA = 0C TA = 25C 2 1 0 0 0 1 2 3 0 1 VI - Enable G Input Voltage - V 2 3 VI - Enable G Input Voltage - V Figure 2 Figure 3 OUTPUT VOLTAGE vs ENABLE G INPUT VOLTAGE 6 TA = 70C 3 VO - Y Output Voltage - V 4 OUTPUT VOLTAGE vs ENABLE G INPUT VOLTAGE OUTPUT VOLTAGE vs ENABLE G INPUT VOLTAGE IIII IIII IIII IIII IIII 6 VCC = 5.25 V 4 5 VCC = 5 V VCC = 4.75 V VO - Output Voltage - V VO - Output Voltage - V 5 3 2 1 0 IIIIII IIIIII IIIIII Load = 470 to VCC TA = 25C See Note B 0 1 4 TA = 25C 2 1 0 2 3 IIIII IIIII IIII IIII TA = 70C 3 IIIIIII IIIIIII IIIIIII IIII IIII TA = 0C VCC = 5 V Load = 470 to VCC See Note B 0 VI - Enable G Input Voltage - V 1 2 3 VI - Enable G Input Voltage - V Figure 5 Figure 4 NOTES: A. The A input is connected to VCC during testing of the Y outputs and to ground during testing of the Z outputs. B. The A input is connected to ground during testing of the Y outputs and to VCC during testing of the Z outputs. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 5 AM26LS31 QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114F - JANUARY 1979 - REVISED OCTOBER 2001 TYPICAL CHARACTERISTICS HIGH-LEVEL OUTPUT VOLTAGE vs HIGH-LEVEL OUTPUT CURRENT HIGH-LEVEL OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE IIII IIII IIII IIIII IIIII IIIII IIIII 5 IIIIIIIII IIII 4 4 VCC = 5.25 V VOH - High-Level Output Voltage - V VOH - High-Level Output Voltage - V VCC = 5 V See Note A IOH = -20 mA 3 IOH = -40 mA 2 1 VCC = 5 V 3 IIIII IIIII VCC = 4.75 V 2 1 IIII IIII TA = 25C See Note A 0 0 0 25 50 0 75 -60 -80 Figure 7 LOW-LEVEL OUTPUT VOLTAGE vs LOW-LEVEL OUTPUT CURRENT LOW-LEVEL OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE IIIII IIIII IIIII IIII IIII 1 0.5 VCC = 5 V IOL = 40 mA See Note B TA = 25C See Note B VOL- Low-Level Output Voltage - V 0.9 0.4 0.3 0.2 0.1 0.8 0.7 IIII IIII IIIII IIIII 0.6 0.5 VCC = 4.75 V 0.4 VCC = 5.25 V 0.3 0.2 0.1 0 0 0 25 50 75 0 TA - Free-Air Temperature - C 20 40 60 80 Figure 9 NOTES: A. The A input is connected to VCC during testing of the Y outputs and to ground during testing of the Z outputs. B. The A input is connected to ground during testing of the Y outputs and to VCC during testing of the Z inputs. POST OFFICE BOX 655303 100 IOL - Low-Level Output Current - mA Figure 8 6 -100 IOH - High-Level Output Current - mA Figure 6 VOL- Low-Level Output Voltage - V -40 -20 TA - Free-Air Temperature - C * DALLAS, TEXAS 75265 120 AM26LS31 QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114F - JANUARY 1979 - REVISED OCTOBER 2001 TYPICAL CHARACTERISTICS Y OUTPUT VOLTAGE vs DATA INPUT VOLTAGE Y OUTPUT VOLTAGE vs DATA INPUT VOLTAGE IIII IIII IIII VO - Y Output Voltage - V 4 IIII IIII 5 No Load TA = 25C IIIII IIIII IIII IIII IIIII IIIII VCC = 5.25 V VCC = 5 V VCC = 4.75 V 3 2 No Load IIII IIII IIII IIII 4 VO - Y Output Voltage - V 5 TA = 70C IIII IIII TA = 0C 3 TA = 25C 2 1 1 0 0 0 1 2 3 0 1 2 3 VI - Data Input Voltage - V VI - Data Input Voltage - V Figure 11 Figure 10 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 7 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. 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