AM26LS31 QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114G – JANUARY 1979 – REVISED FEBRUARY 2002 D D D D D D D, DB, N, OR NS 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 0°C to 70°C. AVAILABLE OPTIONS PACKAGED DEVICES TA 0°C to 70°C PLASTIC SMALL OUTLINE (D, NS) PLASTIC SHRINK SMALL OUTLINE (DB) PLASTIC DIP (N) AM26LS31CD AM26LS31CNS AM26LS31CDB — AM26LS31CN — The DB and NS packages are 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 H H X H Z 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 2002, 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 SLLS114G – JANUARY 1979 – REVISED FEBRUARY 2002 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 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. 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 AM26LS31 QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114G – JANUARY 1979 – REVISED FEBRUARY 2002 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73°C/W DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82°C/W N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67°C/W NS package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64°C/W Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°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 51-7. 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 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 = 25°C. § 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 µA 0.1 mA 20 µA –0.36 mA –150 mA 80 mA 3 AM26LS31 QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114G – JANUARY 1979 – REVISED FEBRUARY 2002 switching characteristics, VCC = 5 V, TA = 25°C (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 Ω 25 40 RL = 180 Ω 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 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 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 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 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 AM26LS31 QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114G – JANUARY 1979 – REVISED FEBRUARY 2002 TYPICAL CHARACTERISTICS OUTPUT VOLTAGE vs ENABLE G INPUT VOLTAGE ÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ VO – Y Output Voltage – V Load = 470 Ω to GND TA = 25°C See Note A 3 ÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ 4 VCC = 5 V Load = 470 Ω to GND See Note A VCC = 5.25 V VCC = 5 V VCC = 4.75 V 2 1 TA = 0°C TA = 25°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 6 TA = 70°C 3 VO – Y Output Voltage – V 4 OUTPUT VOLTAGE vs ENABLE G INPUT VOLTAGE OUTPUT VOLTAGE vs ENABLE G INPUT VOLTAGE ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ 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 ÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎÎ Load = 470 Ω to VCC TA = 25°C See Note B 0 1 4 TA = 25°C 2 1 0 2 3 ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ TA = 70°C 3 ÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ TA = 0°C VCC = 5 V Load = 470 Ω 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 SLLS114G – JANUARY 1979 – REVISED FEBRUARY 2002 TYPICAL CHARACTERISTICS HIGH-LEVEL OUTPUT VOLTAGE vs HIGH-LEVEL OUTPUT CURRENT HIGH-LEVEL OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ 5 ÎÎÎÎÎÎÎÎÎ ÎÎÎÎ 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 ÎÎÎÎÎ ÎÎÎÎÎ VCC = 4.75 V 2 1 ÎÎÎÎ ÎÎÎÎ TA = 25°C 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 ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ 1 0.5 VCC = 5 V IOL = 40 mA See Note B TA = 25°C See Note B VOL– Low-Level Output Voltage – V 0.9 0.4 0.3 0.2 0.1 0.8 0.7 ÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ 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 SLLS114G – JANUARY 1979 – REVISED FEBRUARY 2002 TYPICAL CHARACTERISTICS Y OUTPUT VOLTAGE vs DATA INPUT VOLTAGE Y OUTPUT VOLTAGE vs DATA INPUT VOLTAGE ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ VO – Y Output Voltage – V 4 ÎÎÎÎ ÎÎÎÎ 5 No Load TA = 25°C ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ VCC = 5.25 V VCC = 5 V VCC = 4.75 V 3 2 No Load ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ 4 VO – Y Output Voltage – V 5 TA = 70°C ÎÎÎÎ ÎÎÎÎ TA = 0°C 3 TA = 25°C 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. 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. TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily performed. TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and applications using TI components. To minimize the risks associated with customer products and applications, customers should provide adequate design and operating safeguards. TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask work right, or other TI intellectual property right relating to any combination, machine, or process in which TI products or services are used. Information published by TI regarding third–party products or services does not constitute a license from TI to use such products or services or a warranty or endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual property of the third party, or a license from TI under the patents or other intellectual property of TI. Reproduction of information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an unfair and deceptive business practice. TI is not responsible or liable for such altered documentation. Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business practice. TI is not responsible or liable for any such statements. Mailing Address: Texas Instruments Post Office Box 655303 Dallas, Texas 75265 Copyright 2002, Texas Instruments Incorporated