SN55107A, SN75107A, SN75107B, SN75108A
DUAL LINE RECEIVERS
SLLS069D – JANUARY 1977 – REVISED APRIL 1998
SN55107A . . . J OR W PACKAGE
SN75107A, SN75107B, SN75108A . . . D OR N PACKAGE
(TOP VIEW)
High Speed
Standard Supply Voltage
Dual Channels
1
2
3
4
5
6
7
14
13
12
11
10
9
1A
1B
NC
1Y
1G
S
V
V
CC+
CC–
High Common-Mode Rejection Ratio
High Input Impedance
High Input Sensitivity
2A
2B
NC
2Y
2G
Differential Common-Mode Input Voltage
Range of ±3 V
8
GND
Strobe Inputs for Receiver Selection
Gate Inputs for Logic Versatility
TTL Drive Capability
SN55107A . . . FK PACKAGE
(TOP VIEW)
High dc Noise Margin
Totem-Pole Outputs
B Version Has Diode-Protected Input for
Power-Off Condition
3
2
1
20 19
18
description
NC
NC
1Y
2A
4
5
6
7
8
NC
2B
17
16
15
14
These circuits are TTL-compatible, high-speed
line receivers. Each is a monolithic dual circuit
featuring two independent channels. They are
designed for general use, as well as for such
specific applications as data comparators and
balanced, unbalanced, and party-line transmis-
sion systems. These devices are unilaterally
interchangeable with and are replacements for
the SN55107, SN75107, and SN75108, but offer
diode-clamped strobe inputs to simplify circuit
design.
NC
1G
NC
NC
9 10 11 12 13
NC – No internal connection
The essential difference between the A and B versions can be seen in the schematics. Input-protection diodes
are in series with the collectors of the differential-input transistors of the B versions. These diodes are useful
incertainparty-linesystemsthathavemultipleV
powersuppliesandcanbeoperatedwithsomeoftheV
CC+
CC+
supplies turned off. In such a system, if a supply is turned off and allowed to go to ground, the equivalent input
circuit connected to that supply would be as follows:
Input
Input
A Version
B Version
This would be a problem in specific systems that might have the transmission lines biased to some potential
greater than 1.4 V.
The SN55107A is characterized for operation over the full military temperature range of –55°C to 125°C. The
SN75107A, SN75107B, and SN75108A are characterized for operation from 0°C to 70°C.
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 1998, 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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