MC3450, MC3452, MC3550, MC3552
QUAD DIFFERENTIAL LINE RECEIVERS
SLLS012B – FEBRUARY 1986 – REVISED FEBRUARY 1993
D
D
D
D
D
D
Four Independent Receivers With Common
Enable Input
High Input Sensitivity . . . 25 mV Max
High Input Impedance
MC3450 and MC3550 Have 3-State Outputs
MC3452 Has Open-Collector Outputs
Glitch-Free Power-Up/Power-Down
Operation
MC3450, MC3452 . . . D OR N PACKAGE
MC3550, MC3552 . . . J PACKAGE
(TOP VIEW)
description
The MC3450, MC3550, MC3452, and MC3552
are quad differential line receivers designed for
use in balanced and unbalanced digital data
transmission. The MC34/3550 and MC34/3552
are the same except that the MC3450 and
MC3550 have 3-state outputs whereas the
MC3452 and MC3552 have open-collector
outputs, which permit the wire-AND function with
similar output devices. The 3-state and open-
collector outputs permit connection directly to a
bus-organized system.
The MC3450, MC3550, MC3452, and MC3550
are designed for optimum performance when
used with either the MC3453 or MC3553 quad
differential line driver or SN75109A, SN75110A,
and SN75112 dual differential drivers.
The MC3450 and MC3452 are characterized for
operation from 0°C to 70°C. The MC3550 and
MC3552 are characterized for operation over the
full military temperature range of – 55°C
to 125°C.
FUNCTION TABLE
DIFFERENTIAL INPUTS
A–B
VID
≥
25 mV
– 25 mV < VID < 25 mV
VID
≤
25 mV
X
H = high level, L = low level,
X = impedance (off)
ENABLE
EN
L
L
L
H
1B
1A
1Y
EN
2Y
2A
2B
GND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
CC +
4B
4A
4Y
V
CC –
3Y
3A
3B
MC3550, MC3552 . . . FK PACKAGE
(TOP VIEW)
1Y
EN
NC
2Y
2A
4
5
6
7
8
3 2 1 20 19
18
17
16
15
14
9 10 11 12 13
1A
1B
NC
VCC+
4B
4A
4Y
NC
V
CC –
3Y
NC – No internal connection
THE MC3452 IS NOT
RECOMMENDED FOR NEW DESIGN
OUTPUT
Y
H
?
L
Z
? = indeterminate,
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.
Copyright
©
1993, Texas Instruments Incorporated
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
2B
GND
NC
3B
3A
1
TI [ TEXAS INSTRUMENTS ]
