
MC1488, SN55188, SN75188
QUADRUPLE LINE DRIVERS
SLLS094B – SEPTEMBER 1983 – REVISED MAY 1995
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Meet or Exceed the Requirements of ANSI
EIA/TIA-232-E and ITU Recommendation
V.28
Designed to Be Interchangeable With
Motorola MC1488
Current-Limited Output: 10 mA Typical
Power-Off Output Impedance: 300
Minimum
Slew Rate Control by Load Capacitor
Flexible Supply Voltage Range
Input Compatible With Most TTL Circuits
description
The MC1488, SN55188, and SN75188 are
monolithic quadruple line drivers designed to
interface data terminal equipment with data
communications equipment in conformance with
ANSI EIA/TIA-232-E using a diode in series with
each supply-voltage terminal as shown under
typical applications.
The SN55188 is characterized for operation over
the full military temperature range of –55
°
C to
125
°
C. The MC1488 and SN75188 are
characterized for operation from 0
°
C to 70
°
C.
FUNCTION TABLE
(drivers 2–4)
A
H
L
X
B
H
X
L
Y
L
H
H
H = high level, L = low level,
X = irrelevant
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.
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.
1
2
3
4
5
6
7
14
13
12
11
10
9
8
V
CC–
1A
1Y
2A
2B
2Y
GND
V
CC +
4B
4A
4Y
3B
3A
3Y
SN55188 . . . J OR W PACKAGE
MC1488, SN75188 . . . D OR N PACKAGE
(TOP VIEW)
3
2
1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
4A
NC
4Y
NC
3B
1Y
NC
2A
NC
2B
SN55188 . . . FK PACKAGE
(TOP VIEW)
1
N
3
3
4
2
G
N
NC – No internal connection
C
V
C
V