QUADRUPLE DIFFERENTIAL LINE DRIVER

AM26LS31C, AM26LS31M QUADRUPLE DIFFERENTIAL LINE DRIVER www.ti.com SLLS114I – JANUARY 1979 – REVISED FEBRUARY 2006 FEATURES • • • • • • Meets or Exceeds the Requirements of ANSI TIA/EIA-422-B and ITU Operates From a Single 5-V Supply TTL Compatible Complementary Outputs High Output Impedance in Power-Off Conditions Complementary Output-Enable Inputs D, DB, N, NS, J, OR W PACKAGE (TOP VIEW) DESCRIPTION/ORDERING INFORMATION 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 are in the 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. 1A 1Y 1Z G 2Z 2Y 2A GND 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VCC 4A 4Y 4Z G 3Z 3Y 3A FK PACKAGE (TOP VIEW) V CC 3A NC 1 1Y 1A 3 2 20 19 18 4Y 17 4Z 16 NC 15 G 14 3Z 1Z G NC 2Z 2Y 4 5 6 7 8 9 10 11 12 13 GND NC 2A ORDERING INFORMATION TA PDIP – N 0°C to 70°C SOIC – D SOP – NS SSOP – DB CDIP – J –55°C to 125°C LCCC – FK CFP – W PACKAGE (1) Tube Tube Tape and reel Tape and reel Tape and reel Tube Tube Tube ORDERABLE PART NUMBER AM26LS31CN AM26LS31CD AM26LS31CDR AM26LS31CNSR AM26LS31CDBR AM26LS31MJB AM26LS31MFKB AM26LS31MWB TOP-SIDE MARKING AM26LS31CN AM26LS31C 26LS31 SA31C AM26LS31MJB AM26LS31MFKB AM26LS31MWB (1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. 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. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 1979–2006, Texas Instruments Incorporated 3Y 4A AM26LS31C, AM26LS31M QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114I – JANUARY 1979 – REVISED FEBRUARY 2006 www.ti.com FUNCTION TABLE (1) (EACH DRIVER) INPUT A H L H L X (1) ENABLES G H H X X L G X X L L H OUTPUTS Y H L H L Z Z L H L H Z H = high level, L = low level, X = irrelevant, Z = high impedance (off) LOGIC DIAGRAM (POSITIVE LOGIC) G G 1A 4 12 2 1 3 6 2A 7 5 10 3A 9 11 14 4A 15 13 1Y 1Z 2Y 2Z 3Y 3Z 4Y 4Z 2 Submit Documentation Feedback www.ti.com AM26LS31C, AM26LS31M QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114I – JANUARY 1979 – REVISED FEBRUARY 2006 SCHEMATIC (EACH DRIVER) Input A V 22 kΩ 9Ω Output Y 9Ω Output Z Common to All Four Drivers VCC V 22 kΩ 22 kΩ Enable G Enable G To Three Other Drivers GND All resistor values are nominal. Absolute Maximum Ratings (1) over operating free-air temperature range (unless otherwise noted) MIN VCC VI Supply voltage (2) Input voltage Output off-state voltage D package θJA Package thermal impedance (3) DB package N package NS package Lead temperature 1,6 mm (1/16 in) from case for 10 s Lead temperature 1,6 mm (1/16 in) from case for 60 s Tstg (1) (2) (3) Storage temperature range J package –65 MAX 7 7 5.5 73 82 67 64 260 300 150 °C °C °C °C/W UNIT V V V 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. All voltage values, except differential output voltage VOD, are with respect to network GND. The package thermal impedance is calculated in accordance with JESD 51-7. Submit Documentation Feedback 3 AM26LS31C, AM26LS31M QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114I – JANUARY 1979 – REVISED FEBRUARY 2006 www.ti.com Recommended Operating Conditions MIN VCC VIH VIL IOH IOL TA Supply voltage High-level input voltage Low-level input voltage High-level output current Low-level output current Operating free-air temperature AM26LS31C AM26LS31M 0 –55 AM26LS31C AM26LS31M 4.75 4.5 2 0.8 –20 20 70 125 NOM 5 5 MAX 5.25 5.5 UNIT V V V mA mA °C Electrical Characteristics (1) over operating free-air temperature range (unless otherwise noted) PARAMETER VIK VOH VOL IOZ II IIH IIL IOS ICC (1) (2) (3) Input clamp voltage High-level output voltage Low-level output voltage Off-state (high-impedance-state) output current Input current at maximum input voltage High-level input current Low-level input current Short-circuit output current (3) Supply current VCC = MIN, VCC = MIN, VCC = MIN, VCC = MIN, VCC = MAX, VCC = MAX, VCC = MAX, VCC = MAX VCC = MAX, All outputs disabled TEST CONDITIONS II = –18 mA IOH = –20 mA IOL = 20 mA VO = 0.5 V VO = 2.5 V VI = 7 V VI = 2.7 V VI = 0.4 V –30 32 2.5 0.5 –20 20 0.1 20 –0.36 –150 80 MIN TYP (2) MAX –1.5 UNIT V V V µA mA µA mA mA mA For C-suffix devices, VCC min = 4.75 V and VCC max = 5.25 V. For M-suffix devices, VCC min = 4.5 V and VCC max = 5.5 V. 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. Switching Characteristics VCC = 5 V (see Figure 1) PARAMETER tPLH tPHL tPZH tPZL tPHZ tPLZ tSKEW Propagation delay time, low- to high-level output Propagation delay time, high- to low-level output Output enable time to high level Output enable time to low level Output disable time from high level Output disable time from low level Output-to-output skew TEST CONDITIONS TA = 25°C MIN TYP 14 CL = 30 pF, S1 and S2 open 14 CL = 30 pF CL = 10 pF, CL = 30 pF, RL = 75 Ω RL = 180 Ω S1 and S2 closed S1 and S2 open 25 37 21 23 1 20 40 45 30 35 6 30 60 68 45 53 9 ns ns ns MAX 20 AM26LS31M MIN MAX 30 ns UNIT 4 Submit Documentation Feedback www.ti.com AM26LS31C, AM26LS31M QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114I – JANUARY 1979 – REVISED FEBRUARY 2006 PARAMETER MEASUREMENT INFORMATION Input A (see Notes B and C) Test Point VCC 180 Ω S1 From Output Under Test CL (see Note A) 75 Ω S2 tPHL Output Z PROPAGATION DELAY TIMES AND SKEW 1.5 V VOL TEST CIRCUIT Output Y Skew Skew tPLH VOH 1.5 V VOL 3V 1.3 V tPLH 1.3 V 0V tPHL VOH Enable G (see Note D) Enable G 3V 1.5 V tPZL See Note D tPLZ ≈4.5 V 1.5 V 0.5 V tPZH tPHZ 0.5 V VOH ≈1.5 V ≈0 V S1 Closed S2 Closed 1.5 V 0V S1 Closed S2 Closed ≈1.5 V VOL Waveform 1 (see Note E) S1 Closed S2 Open Waveform 2 (see Note E) S1 Open S2 Closed 1.5 V 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 Submit Documentation Feedback 5 AM26LS31C, AM26LS31M QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114I – JANUARY 1979 – REVISED FEBRUARY 2006 www.ti.com TYPICAL CHARACTERISTICS OUTPUT VOLTAGE vs ENABLE G INPUT VOLTAGE OUTPUT VOLTAGE vs ENABLE G INPUT VOLTAGE 4 Load = 470 Ω to GND TA = 25°C See Note A VCC = 5.25 V VCC = 5 V VO − Y Output Voltage − V VCC = 4.75 V VO − Y Output Voltage − V 3 2 1 0 0 1 2 3 VI − Enable G Input Voltage − V Figure 2. OUTPUT VOLTAGE vs ENABLE G INPUT VOLTAGE 6 6 VCC = 5.25 V VCC = 5 V 5 VO − Output Voltage − V 5 VO − Output Voltage − V TA = 25°C 2 2 1 0 Load = 470 Ω to VCC TA = 25°C See Note B 1 1 VCC = 5 V Load = 470 Ω to VCC See Note B 1 0 0 2 3 0 2 VI − Enable G Input Voltage − V VI − Enable G Input Voltage − V Figure 4. A. B. Figure 5. The A input is connected to VCC during testing of the Y outputs and to ground during testing of the Z outputs. The A input is connected to ground during testing of the Y outputs and to VCC during testing of the Z outputs. 6 Submit Documentation Feedback  ¡¡¡      3 3              ¡ ¡ ¡ ¡ ¡¡   ¡ ¡ ¡ ¡ ¡¡ ¡¡¡¡¡¡       ¡     ¡ ¡ ¡   ¡ ¡   ¡¡¡  4 VCC = 4.75 V          ¡ ¡ ¡ ¡ ¡¡¡¡   ¡      ¡ ¡ ¡    ¡¡¡¡¡¡   ¡ ¡              ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡¡ ¡¡¡   ¡¡¡¡¡¡                 4 VCC = 5 V Load = 470 Ω to GND See Note A TA = 70°C 3 TA = 0°C TA = 25°C 2 1 0 0 1 2 3 VI − Enable G Input Voltage − V  ¡     ¡ ¡ ¡   ¡ ¡    ¡ ¡ ¡             ¡ ¡ ¡  ¡¡¡¡¡¡    ¡ ¡ ¡ ¡ ¡¡ ¡ ¡ ¡ ¡¡¡    ¡¡¡¡¡¡                              ¡ ¡¡¡¡¡   ¡ ¡¡ ¡ ¡ ¡ ¡¡¡¡¡¡            ¡¡¡¡         ¡ ¡ ¡ ¡             ¡ ¡ ¡ ¡   ¡ ¡ ¡ ¡ ¡¡¡¡   Figure 3. OUTPUT VOLTAGE vs ENABLE G INPUT VOLTAGE 4 TA = 70°C TA = 0°C 3 www.ti.com AM26LS31C, AM26LS31M QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114I – JANUARY 1979 – REVISED FEBRUARY 2006 TYPICAL CHARACTERISTICS (continued) HIGH-LEVEL OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE 4 HIGH-LEVEL OUTPUT VOLTAGE vs HIGH-LEVEL OUTPUT CURRENT 5 VCC = 5 V See Note A