AM26LS31C QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114D – JANUARY 1979 – REVISED OCTOBER 1998 D D D D D D D 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 AM26LS31C 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 AM26LS31C is characterized for operation from 0°C to 70°C. FUNCTION TABLE (each driver) INPUT A ENABLES OUTPUTS G G Y Z H H X H L H L H X L 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 1998, 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 AM26LS31C QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114D – JANUARY 1979 – REVISED OCTOBER 1998 logic symbol† ≥1 4 G EN 12 G 2 1 1A 3 6 7 2A 5 10 9 3A 11 14 15 4A 13 1Y 1Z 2Y 2Z 3Y 3Z 4Y 4Z logic diagram (positive logic) G G 4 12 2 1A 1 3 6 2A 7 5 10 3A 9 11 14 4A 2 15 POST OFFICE BOX 655303 13 • DALLAS, TEXAS 75265 1Y 1Z 2Y 2Z 3Y 3Z 4Y 4Z AM26LS31C QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114D – JANUARY 1979 – REVISED OCTOBER 1998 schematic (each driver) Input A V 22 kΩ 9Ω 9Ω Output Z Output Y Common to All Four Drivers VCC V 22 kΩ 22 kΩ To Three Other Drivers Enable G Enable G GND All resistor values are nominal. 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, θJA (see Note 2): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113°C/W N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78°C/W Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C † 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, except for through-hole packages, which use a trace length of zero. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3 AM26LS31C QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114D – JANUARY 1979 – REVISED OCTOBER 1998 recommended operating conditions (unless otherwise noted) Supply voltage, VCC High-level input voltage, VIH MIN NOM MAX UNIT 4.75 5 5.25 V 2 V Low-level input voltage, VIL 0.8 V High-level output current, IOH –20 mA Low-level output current, IOL 20 mA 70 °C Operating free-air temperature, TA 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† MAX UNIT –1.5 V 2.5 V 0.5 –20 VO = 2.5 V VI = 7 V 20 VI = 2.7 V VI = 0.4 V –30 ICC Supply current VCC = 5.25 V, All outputs disabled 32 † All typical values are at VCC = 5 V and TA = 25°C. ‡ Not more than one output should be shorted at a time, and duration of the short circuit should not exceed one second. V µA 0.1 mA 20 µA –0.36 mA –150 mA 80 mA switching characteristics, VCC = 5 V, TA = 25°C (see Figure 1) PARAMETER Propagation delay time, low-to-high-level output tPZH tPZL Output enable time to high level tPHZ tPLZ Output disable time from high level Propagation delay time, high-to-low-level output Output enable time to low level Output disable time from low level Output-to-output skew 4 TEST CONDITIONS tPLH tPHL pF CL = 30 pF, CL = 30 pF TYP MAX 14 20 14 20 RL = 75 Ω 25 40 RL = 180 Ω 37 45 21 30 23 35 1 6 S1 and S2 open CL = 10 pF, pF S1 and S2 closed CL = 30 pF, S1 and S2 open POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 MIN UNIT ns ns ns ns AM26LS31C QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114D – JANUARY 1979 – REVISED OCTOBER 1998 PARAMETER MEASUREMENT INFORMATION Input A (see Notes B and C) Test Point 3V 1.3 V 1.3 V 0V VCC tPLH tPHL 180 Ω VOH 1.5 V Output Y S1 From Output Under Test VOL Skew 75 Ω 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 tPZL tPLZ ≈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 Ω, 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 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5 AM26LS31C QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114D – JANUARY 1979 – REVISED OCTOBER 1998 TYPICAL CHARACTERISTICS OUTPUT VOLTAGE vs ENABLE G INPUT VOLTAGE 4 VO – Y Output Voltage – V Load = 470 Ω to GND TA = 25°C See Note A 3 ÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ 4 VCC = 5 V Load = 470 Ω to GND See Note A VCC = 5.25 V VCC = 5 V 3 VO – Y Output Voltage – V ÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎ OUTPUT VOLTAGE vs ENABLE G INPUT VOLTAGE VCC = 4.75 V 2 1 TA = 25°C ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ TA = 70°C TA = 0°C 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 OUTPUT VOLTAGE vs ENABLE G INPUT VOLTAGE ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ 6 6 VCC = 5.25 V 5 VCC = 5 V VCC = 4.75 V 4 VO – Output Voltage – V VO – Output Voltage – V 5 3 2 ÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎ 1 Load = 470 Ω to VCC TA = 25°C See Note B 0 0 1 ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎ 4 TA = 70°C 3 TA = 25°C TA = 0°C 2 1 VCC = 5 V Load = 470 Ω to VCC See Note B 0 2 3 0 VI – Enable G Input Voltage – V 1 2 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. 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3 AM26LS31C QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114D – JANUARY 1979 – REVISED OCTOBER 1998 TYPICAL CHARACTERISTICS HIGH-LEVEL OUTPUT VOLTAGE vs HIGH-LEVEL OUTPUT CURRENT HIGH-LEVEL OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE 5 ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ 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 VCC = 4.75 V 2 1 ÎÎÎÎÎ ÎÎÎÎÎ TA = 25°C See Note A 0 0 0 25 50 0 75 TA – Free-Air Temperature – °C –20 ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ –100 ÎÎÎÎÎ ÎÎÎÎÎ 1 VCC = 5 V IOL = 40 mA See Note B TA = 25°C See Note B 0.9 VOL– Low-Level Output Voltage – V VOL– Low-Level Output Voltage – V –80 LOW-LEVEL OUTPUT VOLTAGE vs LOW-LEVEL OUTPUT CURRENT LOW-LEVEL OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE 0.4 –60 Figure 7 Figure 6 0.5 –40 IOH – High-Level Output Current – mA 0.3 0.2 0.1 0.8 0.7 0.6 ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ 0.5 VCC = 4.75 V 0.4 VCC = 5.25 V 0.3 0.2 0.1 0 0 0 25 50 75 TA – Free-Air Temperature – °C 0 20 40 60 80 100 120 IOL – Low-Level Output Current – mA Figure 9 Figure 8 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 • DALLAS, TEXAS 75265 7 AM26LS31C QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114D – JANUARY 1979 – REVISED OCTOBER 1998 TYPICAL CHARACTERISTICS Y OUTPUT VOLTAGE vs DATA INPUT VOLTAGE Y OUTPUT VOLTAGE vs DATA INPUT VOLTAGE ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ 5 5 VO – Y Output Voltage – V 4 ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ VCC = 5.25 V VCC = 5 V VCC = 4.75 V 3 2 ÎÎÎÎ ÎÎÎÎ No Load 3 TA = 70°C ÎÎÎÎ ÎÎÎÎ TA = 0°C TA = 25°C 2 1 1 0 0 0 1 2 3 0 1 Figure 11 Figure 10 POST OFFICE BOX 655303 2 VI – Data Input Voltage – V VI – Data Input Voltage – V 8 ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ 4 VO – Y Output Voltage – V No Load TA = 25°C • DALLAS, TEXAS 75265 3 IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. 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