SN75ALS194NSR Datasheet, PDF (1/22 Pages) Texas Instruments – QUADRUPLE DIFFERENTIAL LINE DRIVERS

SN55ALS194, SN75ALS194
QUADRUPLE DIFFERENTIAL LINE DRIVERS
D Meet or Exceed the Requirements of ANSI
Standard EIA/TIA-422-B and ITU
Recommendation V.11
D Designed to Operate Up to 20 Mbaud
D 3-State TTL - Compatible Outputs
D Single 5-V Supply Operation
D High Output Impedance in Power-Off
Condition
D Two Pairs of Drivers, Independently
Enabled
D Designed as Improved Replacements for
the MC3487
SLLS009D – OCTOBER 1985 – REVISED MAY 1995
SN55ALS194 . . . J OR W PACKAGE
SN75ALS194 . . . D OR N PACKAGE
(TOP VIEW)
1A 1
1Y 2
1Z 3
1, 2EN 4
2Z 5
2Y 6
2A 7
GND 8
16 V_CC
15 4A
14 4Y
13 4Z
12 3, 4EN
11 3Z
10 3Y
9 3A
description
These four differential line drivers are designed
for data transmission over twisted-pair or
parallel-wire transmission lines. They meet the
requirements of ANSI Standard EIA/TIA-422-B
and ITU Recommendation V.11 and are
compatible with 3-state TTL circuits. Advanced
low-power Schottky technology provides high
speed without the usual power penalty. Standby
supply current is typically only 26 mA. Typical
propagation delay time is less than 10 ns, and
enable/disable times are typically less than
16 ns.
SN55ALS194 . . . FK PACKAGE
(TOP VIEW)
1Z
1, 2EN
NC
2Z
2Y
3 2 1 20 19
4
18
5
17
6
16
7
15
8
14
9 10 11 12 13
4Y
4Z
NC
3, 4EN
3Z
High-impedance inputs keep input currents low:
less than 1 µA for a high level and less than
100 µA for a low level. The driver circuits can be
enabled in pairs by separate active-high enable
inputs. The SN55ALS194 and SN75ALS194 are
capable of data rates in excess of 20 megabits
per second and are designed to operate with the
SN55ALS195 and SN75ALS195 quadruple line
receivers.
NC – No internal connection
The SN55ALS194 is characterized for operation over the full military temperature range of – 55°C to 125°C. The
SN75ALS194 is characterized for operation from 0°C to 70°C.
FUNCTION TABLE
(each driver)
INPUTS
A
OUTPUT
EN
OUTPUTS
Y
Z
H
H
H
L
L
H
L
H
X
L
Z
Z
H = high level, L = low level, X = irrelevant,
Z = high impedance
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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 Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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Copyright © 1995, Texas Instruments Incorporated
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