SN75159
DUAL DIFFERENTIAL LINE DRIVER
WITH 3-STATE OUTPUTS
SLLS088B – JANUARY 1977 – REVISED MAY 1995
D OR N PACKAGE
(TOP VIEW)
Meets or Exceeds the Requirements of
ANSI EIA/TIA-422-B and ITU
Recommendation V.11
NC
1Z
V
1
2
3
4
5
6
7
14
13
12
11
10
9
CC
Single 5-V Supply
Balanced Line Operation
TTL Compatible
2Z
1Y
2Y
1A
2B
1B
2A
High-Impedance Output State for
Party-Line Applications
1EN
GND
2EN
NC
8
High-Current Active-Pullup Outputs
Short-Circuit Protection
Dual Channels
NC–No internal connection
Clamp Diodes at Inputs
description
The SN75159 dual differential line driver with 3-state outputs is designed to provide all the features of the
SN75158linedriverwiththeaddedfeatureofdriveroutputcontrols. Thereisanindividualcontrolforeachdriver.
When the output control is low, the associated outputs are in a high-impedance state and the outputs can neither
drive nor load the bus. This permits many devices to be connected together on the same transmission line for
party-line applications.
The SN75159 is characterized for operation from 0°C to 70°C.
†
logic symbol
logic diagram (positive logic)
6
&
1EN
6
1EN
1A
EN
3
2
1Y
1Z
4
4
3
2
1Y
1Z
1A
5
1B
5
9
1B
2EN
2A
12
13
2Y
2Z
10
11
2B
9
2EN
†
This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
10
12
13
2Y
2Z
2A
11
2B
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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.
1
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