Quadruple Line Driver
SN75126 QUADRUPLE LINE DRIVER
SLLS060B – FEBRUARY 1990 – REVISED MAY 1995
• Meets or Exceeds the Requirements of
IBM™ ...
Description
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
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.
D OR N PACKAGE (TOP VIEW)
1Y 1F 1A 1, 2G 2A 2F 2Y GND
1 2 3 4 5 6 7 8
16 VCC 15 4Y 14 4F 13 4A 12 3,4G 11 3A 10 3F 9 3Y
FUNCTION TABLE
INPUTS
GA
LX HH HH
OUTPUTS YF
LH HH SL
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 o...
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