SN75ALS126 QUADRUPLE LINE DRIVER SLLS016C – FEBRUARY 1986 – REVISED FEBRUARY 1993 D D D D D D D D Meets IBM 360/370 I/O Interface Specification GA22-6974-3 (Also See SN75ALS130) Minimum Output Voltage of 3.11 V at IOH = – 60 mA Fault-Flag Circuit Output Signals Driver Output Fault Fault-Detection Current Limit Circuit Minimizes Power Dissipation During a Fault Condition Advanced Low-Power Schottky Circuitry Dual Common Enable Individual Fault Flags Designed to Be an Improved Replacement for the MC3481 D OR N PACKAGE (TOP VIEW) 1Y 1F 1A 1,2G 2A 2F 2Y GND 1 16 2 15 3 14 4 13 5 12 6 11 7 10 8 9 VCC 4Y 4F 4A 3,4G 3A 3F 3Y FUNCTION TABLE INPUTS description OUTPUTS G A Y F L H H X H H L H S H H L H = high level, L = low level, The SN75ALS126 quadruple line driver is X = irrelevant, S = shorted to GND designed to meet the IBM 360/370 I/O specification GA22-6974-3. The output voltage is 3.11 V minimum (at IOH = – 59.3 mA) over the recommended ranges of supply voltage (4.5 V to 5.95 V) and temperature. Driver outputs use a fault-detection current-limit circuit to allow high drive current but still minimize power dissipation when the output is shorted to ground. The SN75ALS126 is compatible with standard T TL logic and supply voltages. The SN75ALS126 employs the IMPACT process to achieve fast switching speeds and low power dissipation. Fault-flag circuitry is designed to sense and signal a line short on any Y line. Upon detecting an output fault condition, the fault-flag circuit forces the driver output into a low state and signals a fault condition by causing the fault-flag output to go low. The SN75ALS126 can drive a 50-Ω load as required in the IBM GA22-6974-3 specification or a 90-Ω load as used in many I/O systems. Optimum performance can be achieved when the device is used with either the SN75127, SN75128, or SN75129 line receivers. The SN75ALS126 is characterized for operation from 0°C to 70°C. IMPACT is a trademark of Texas Instruments Incorporated Copyright 1993, 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 SN75ALS126 QUADRUPLE LINE DRIVER SLLS016C – FEBRUARY 1986 – REVISED FEBRUARY 1993 logic symbol† 1A 3 logic diagram (positive logic) & 2 1EN2 2 1F 1A 1, 2G G1 1, 2G 2 4 & 2A 3A 3, 4G 4A 1 6 3EN4 6 2F 2A 7 4 10 11 9 12 14 1 1F 1Y 1Y G3 5 3 4 5 7 2F 2Y 2Y 3F 10 3Y 4F 3A 3, 4G 11 12 9 3F 3Y 13 15 14 4Y † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. 4A 13 15 4F 4Y schematics of inputs and outputs EQUIVALENT OF EACH INPUT TYPICAL OF ALL Y OUTPUTS VCC VCC Req TYPICAL OF F OUTPUT VCC 20 kΩ NOM Y Output Input F OUTPUT GND GND A Inputs: Req = 20 kΩ NOM G Inputs: Req = 10 kΩ NOM 2 GND POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SN75ALS126 QUADRUPLE LINE DRIVER SLLS016C – FEBRUARY 1986 – REVISED FEBRUARY 1993 absolute maximum ratings over operating free-air temperature range (unless otherwise noted) Supply voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Continuous total dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table Operating free-air temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C DISSIPATION RATING TABLE TA ≤ 25°C POWER RATING DERATING FACTOR ABOVE TA = 25°C TA = 70°C POWER RATING D 950 mW 7.6 mW/°C 608 mW N 1150 mW 9.2 mW/°C 736 mW PACKAGE recommended operating conditions Supply voltage, VCC High-level input voltage, VIH MIN NOM MAX UNIT 4.5 5 5.95 V 2 Low-level input voltage, VIL V 0.8 High-level output current, IOH Operating free-air temperature, TA 0 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 V – 59.3 mA 70 °C 3 SN75ALS126 QUADRUPLE LINE DRIVER SLLS016C – FEBRUARY 1986 – REVISED FEBRUARY 1993 electrical characteristics over recommended operating free-air temperature range PARAMETER VIK Input clamp voltage VOH High-level output voltage TEST CONDITIONS A,G VCC = 5.5 V, VCC = 5.95 V, IOL = – 240 µA, IOL = – 1 mA, Y VCC = 4.5 V, VCC = 4.5 V, IOL = 8 mA, VIL = 0, Y VCC = 0 V, VIL = 0, VCC = 4 4.5 5V V, VI = 5 5.5 5V VCC = 4 4.5 5V V, VI = 2 2.7 7V VCC = 5.95 5 95 V V, VI = 0 0.4 4V VCC = 5.5 V, VCC = 5.5 V, VO = 0, VO = 0 VIH = 2.7 V VCC = 5.95 V, VCC = 5.95 V, VO = 0, VO = 0 VIH = 2.7 V VIH = 2.7 V VIH = 2.7 V 25 VIL = 0.4 V VIL = 0.4 V 45 Y F Off state output current Off-state II Input current IIH High level input current High-level IIL Low level input current Low-level A G A G A G Y F IOS Short circuit output Short-circuit V IOH = – 41 mA, IOH = – 400 µA, Y IO( O(off) ff) UNIT – 1.5 VCC = 5.25 V, VCC = 4.5 V, Y F Low-level output voltage MAX II = – 18 mA IOH = – 59.3 mA, Y VOL MIN VCC = 4.5 V, VCC = 4.5 V, Y F ICCH Supply current, current all outputs high VCC = 5.5 V, VCC = 5.95 V, No load, ICCL Supply current current, Y outputs low VCC = 5.5 V, VCC = 5.95 V, No load, VIH = 2 V VIH = 2 V VIH = 2 V VIL = 0.8 V 3.11 2.5 0.15 VIL = 0.8 V Y at 0 V 0.15 VO = 3.11 V VO = 3.11 V 100 200 100 400 20 80 – 250 –1000 µA µA µA µA –5 –100 –5 –15 No load, V 0.5 –15 No load, V 3.9 mA –110 27 47 mA mA switching characteristics over recommended operating free-air temperature range PARAMETER tPLH Propagation delay time, low-to-high-level output tPHL Propagation delay time, high-to-low-level output tPLH tPHL Ratio of propagation delay times tPLH Propagation delay time, low-to-high-level output tPHL Propagation delay time, high-to-low-level output tPLH Propagation delay time, low-to-high-level output tPHL 4 Propagation delay time, high-to-low-level output FROM (INPUT) A TO (OUTPUT) Y TEST CONDITIONS 4 5 V to t 5.5 5 5 V, V VCC = 4.5 RL = 50 Ω, See Figures 1 and 2 MIN F CL = 50 pF, VH(ref) = 3.11 V, 0.3 A A Y F VCC = 5.25 V to 5.95 V, RL = 90 Ω Ω, See Figures 1 and 2 CL = 50 pF, VH( 3.9 9V V, H(ref) f) = 3 VCC = 5 V, CL = 15 pF, RL = 2 kΩ, See Figures 1 and 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 MAX UNIT 30 ns 28 ns 3 34 ns 34 ns 45 ns 75 ns SN75ALS126 QUADRUPLE LINE DRIVER SLLS016C – FEBRUARY 1986 – REVISED FEBRUARY 1993 PARAMETER MEASUREMENT INFORMATION tf tr 4V 90% 90% 1.3 V 1.3 V 10% 10% A Input tPLH 0V Normal Operation tPHL VOH VH(ref) 0.5 V Y Output tPHL VOL tPLH F Output VOH 1.3 V Driver Short-Circuit Operation 1.3 V VOL NOTE A: The input pulse is supplied by a generator having the following characteristics: PRR ≤ 1 MHz, duty cycle ≤ 50%, tr ≤ 6 ns, tf ≤ 6 ns, ZO ≈ 50 Ω. Figure 1. Input and Output Voltage Waveforms 5V RL = 2 kΩ Y Output RL CL = 50 pF (see Note A) F Output Close for Testing F CL = 15 pF (see Note A) NOTE A: CL includes probe and stray capacitance. Figure 2. Switching Characteristics Load Circuits POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5 PACKAGE OPTION ADDENDUM www.ti.com 24-Jun-2005 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing SN75ALS126D OBSOLETE SOIC D Pins Package Eco Plan (2) Qty 14 TBD Lead/Ball Finish Call TI MSL Peak Temp (3) Call TI (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS) or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. 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