MC3453, MC3553
QUAD LINE DRIVERS WITH COMMON ENABLE
SLLS119A – FEBRUARY 1986 – REVISED FEBRUARY 1993
Similar to a Dual Version of SN55/75110A
Line Driver
D, J, OR N . . . PACKAGE
(TOP VIEW)
Improved Stability Over Supply Voltage and
Temperature Ranges
1A
1Y
V
CC +
1
2
3
4
5
6
7
8
16
15
14
13
4A
4Y
4Z
Constant-Current Outputs
High Output Impedance
1Z
2Z
2Y
12 3Z
11 3Y
High Common-Mode Output Voltage Range
–3 V to 10 V
ENABLE
2A
10
9
3A
Glitch-Free Power-Up/Power-Down
Operation
GND
V
CC –
TTL-Input Compatibility
Common-Enable Circuit
FK PACKAGE
(TOP VIEW)
Designed to Be Interchangeable With
Motorola MC3453 and Military-Temperature-
Range Version of MC3553
3
2
1
20 19
18
description
4Y
1Z
4
4Z
NC
3Z
3Y
2Z
5
17
16
15
14
TheMC3453andMC3553featurefourlinedrivers
with a common-enable input. When the ENABLE
input is high, a constant output current is switched
between each pair of output terminals in response
to the logic level at that channel input. When the
ENABLE is low, all channel outputs are
nonconductive (transistors biased to cutoff). This
minimizes loading in party-line systems where a
large number of drivers share the same line.
NC
6
2Y
7
ENABLE
8
9 10 11 12 13
NC–No internal connection
FUNCTION TABLE
The driver outputs have a common-mode voltage
range of –3 V to 10 V, allowing common-mode
voltages on the line without affecting driver
performance.
OUTPUT
CURRENT
LOGIC
INPUT
ENABLE
INPUT
Z
Y
H
L
H
H
L
On Off
Off On
Off Off
Off Off
All outputs should be maintained within the
recommended common-mode output voltage
range to ensure that the channels do not interact
with each other. To minimize power dissipation, all
unused outputs should be grounded.
H
L
L
L = low logic level, H = high logic level
All inputs are diode clamped and are designed to satisfy TTL-system requirements. The inputs are tested at
2 V for high-logic-level input conditions and 0.8 V for low-logic-level input conditions. These tests ensure 400
mV of noise margin when interfaced with Series 54/74 TTL.
The MC3453 is characterized for operation from 0°C to 70°C. The MC3553 is characterized for operation over
the full military temperature range of –55°C to 125°C.
Copyright 1993, 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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