SN75126 QUADRUPLE LINE DRIVER SLLS060B – FEBRUARY 1990 – REVISED MAY 1995 • • • • • • • Meets or Exceeds the Requirements of IBM System 360/370 Input/Output Interface Specification GA22-6974-3 Minimum Output Voltage of 3.11 V at IOH = – 59.3 mA Fault-Flag Circuit Output Signals Driver Output Fault Fault-Detection Current-Limit Circuit Minimizes Power Dissipation During a Fault Condition Dual Common Enable Individual Fault Flags Designed to Replace 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 The SN75126 quadruple line driver is designed to meet the IBM 360/370 I/O specification A22-6974-3. 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 SN75126 is compatible with standard TTL logic and supply voltages. G A L H H X H H OUTPUTS Y F L H H H S L H = high level, L = low level, X = irrelevant, S = shorted to ground 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 SN75126 can drive a 50-Ω load 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 SN75128 or SN75129 line receivers. Also, see the SN751730 for new 360/370 interface designs. The SN75126 is characterized for operation from 0°C to 70°C. IBM is a trademark of International Business Machines Corp. Copyright 1995, 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 2–1 SN75126 QUADRUPLE LINE DRIVER SLLS060B – FEBRUARY 1990 – REVISED MAY 1995 logic symbol† 1A 3 logic diagram (positive logic) & 1EN2 2 G1 1, 2G 4 2A 1 2 & 3EN4 1Y 3 1A 4 1, 2G 5 7 10 11 1 2F 6 G3 4 3A 6 2 1F 2Y 2A 5 7 3, 4G 4A 12 14 1Y 2F 2Y 3F 10 9 1F 3Y 4F 11 3A 12 3, 4G 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 R(eq) TYPICAL OF F OUTPUTS VCC 20 kΩ NOM Y Output Input F Output GND GND A Inputs: R(eq) – 20 kΩ NOM G Inputs: R(eq) – 10 kΩ NOM R(eq) = equivalent resistor GND absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table Operating free-air temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C 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. 2–2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SN75126 QUADRUPLE LINE DRIVER SLLS060B – FEBRUARY 1990 – REVISED MAY 1995 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 V Low-level input voltage, VIL 0.8 High-level output current, IOH Operating free-air temperature, TA 0 V – 59.3 mA 70 °C electrical characteristics over recommended operating free-air temperature range PARAMETER VIK Input clamp voltage TEST CONDITIONS A,G Y VOH High-level output voltage Y F Y VOL Low-level out output ut voltage Y F IO( O(off) ff) Off state output current Off-state II Input current IIH High level input current High-level IIL Low level input current Low-level Y Y A G A G A G Y IOS Short circuit output current Short-circuit F Y F MIN MAX UNIT – 1.5 V VCC = 4.5 V, VCC = 4.5 V, II = – 18 mA IOH = – 59.3 mA, VCC = 5.25 V, VCC = 4.5 V, IOH = – 41 mA, IOH = – 400 µA, VCC = 5.5 V, VCC = 5.95 V, IOL = – 240 µA, IOL = – 1 mA, VCC = 4.5 V,, VIH = 2 V IOL = 8 mA,, Y at 0 V,, VCC = 4.5 V, VCC = 0, VI = 0, VI = 0, VO = 3.11 V VO = 3.11 V 5V VCC = 4 4.5 V, 5V VI = 5 5.5 VCC = 4 4.5 5V V, VI = 2 2.7 7V VCC = 5 5.95 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 V VIH = 2 V 70 VIL = 0.8 V VIL = 0.8 V 55 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, POST OFFICE BOX 655303 No load, No load, • DALLAS, TEXAS 75265 VIH = 2 V VIH = 2 V VIH = 2 V VIL = 0.8 V 3.11 V 3.9 2.5 0.15 VIL = 0.8 V 0.15 V 05 0.5 100 200 100 200 20 40 – 250 – 500 µA µA µA µA –5 – 15 – 100 –5 – 15 mA – 110 80 70 mA mA 2–3 SN75126 QUADRUPLE LINE DRIVER SLLS060B – FEBRUARY 1990 – REVISED MAY 1995 switching characteristics at TA = 25°C FROM (INPUT) PARAMETER tPLH Propagation delay time, time lowlow to high-level high level output tPHL time highhigh to low-level low level output Propagation delay time, tPLH tPHL Ratio of propagation delay times tPLH Propagation delay time, time lowlow to high-level high level output TO (OUTPUT) A Y A tPHL Propagation delay time, time highhigh to low-level low level output tPLH Propagation delay time, time lowlow to high-level high level output Y F A tPHL Propagation delay time, time highhigh to low-level low level output TEST CONDITIONS VCC = 4 4.5 5 V to 5 5.5 5V V, RL = 50 Ω Ω, F CL = 50 pF, VOH(ref) = 3.11 V, S Figures Fi d2 See 1 and VCC = 5.25 V to 5.95 V, RL = 90 Ω, CL = 50 pF, F, VOH(ref) = 3.9 V, See Figures 1 and 2 VCC = 5 V, CL = 15 pF, RL = 2 kΩ, kΩ S Figures See Fi 1 and d2 MIN MAX UNIT 40 ns 37 ns 03 0.3 3 45 ns 45 ns 60 ns 100 ns PARAMETER MEASUREMENT INFORMATION tr tf 90% 1.3 V A Input 4V 90% 1.3 V 10% 10% tPLH 0V tPHL Normal Operation VOH VOH(ref) 0.8 V Y Output tPHL VOL tPLH VOH F Output 1.3 V Driver Short-Circuit Operation 1.3 V VOL NOTE: 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 2–4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SN75126 QUADRUPLE LINE DRIVER SLLS060B – FEBRUARY 1990 – REVISED MAY 1995 PARAMETER MEASUREMENT INFORMATION 5V RL = 2 kΩ Y Output RL F Output CL = 50 pF (see Note A) 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 2–5 SN75126 QUADRUPLE LINE DRIVER FAMILY NAME SLLS060B – FEBRUARY 1990 – REVISED MAY 1995 2–6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 PACKAGE OPTION ADDENDUM www.ti.com 30-Mar-2005 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing SN75126N OBSOLETE PDIP N Pins Package Eco Plan (2) Qty 16 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. 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