SN75ALS126 Datasheet, PDF (1/7 Pages) Texas Instruments – QUADRUPLE LINE DRIVER

SN75ALS126
QUADRUPLE LINE DRIVER
SLLS016C – FEBRUARY 1986 – REVISED FEBRUARY 1993
D Meets IBM 360/370 I/O Interface
Specification GA22-6974-3 (Also See
D OR N PACKAGE
(TOP VIEW)
SN75ALS130)
D Minimum Output Voltage of 3.11 V at
I_OH = – 60 mA
D Fault-Flag Circuit Output Signals Driver
Output Fault
D Fault-Detection Current Limit Circuit
Minimizes Power Dissipation During a
Fault Condition
D Advanced Low-Power Schottky Circuitry
D Dual Common Enable
D Individual Fault Flags
D Designed to Be an Improved Replacement
for the MC3481
1Y 1
1F 2
1A 3
1,2G 4
2A 5
2F 6
2Y 7
GND 8
16 V_CC
15 4Y
14 4F
13 4A
12 3,4G
11 3A
10 3F
9 3Y
FUNCTION TABLE
INPUTS OUTPUTS
GA
YF
LX
LH
description
HH
HH
HH
SL
The SN75ALS126 quadruple line driver is
designed to meet the IBM 360/370 I/O
H = high level, L = low level,
X = irrelevant,
S = shorted to GND
specification GA22-6974-3. The output voltage is
3.11 V minimum (at I_OH = – 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
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.
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Copyright © 1993, Texas Instruments Incorporated
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