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SLLS098C − MAY 1980 − REVISED FEBRUARY 2004
D, N, OR NS PACKAGE
(TOP VIEW)
D
Meets or Exceeds Requirements of ANSI
TIA/EIA-422-B and ITU
Recommendation V.11
V
1A
1Y
1
2
3
4
5
6
7
8
16
15
14
13
CC
D
D
D
D
D
3-State, TTL-Compatible Outputs
Fast Transition Times
4A
4Y
4Z
1Z
High-Impedance Inputs
1,2EN
2Z
12 3,4EN
11 3Z
Single 5-V Supply
2Y
Power-Up and Power-Down Protection
10
9
3Y
3A
2A
GND
description/ordering information
The MC3487 offers four independent differential line drivers designed to meet the specifications of ANSI
TIA/EIA-422-B and ITU Recommendation V.11. Each driver has a TTL-compatible input buffered to reduce
current and minimize loading.
The driver outputs utilize 3-state circuitry to provide high-impedance states at any pair of differential outputs
when the appropriate output enable is at a low logic level. Internal circuitry is provided to ensure the
high-impedance state at the differential outputs during power-up and power-down transition times, provided the
output enable is low.
The MC3487 is designed for optimum performance when used with the MC3486 quadruple line receiver. It is
supplied in a 16-pin dual-in-line package and operates from a single 5-V supply.
ORDERING INFORMATION
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
†
PACKAGE
T
A
PDIP − N
Tube
MC3487N
MC3487N
Tube
MC3487D
0°C to 70°C
SOIC − D
SOP − NS
MC3487
MC3487
Tape and reel
Tape and reel
MC3487DR
MC3487NSR
†
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines
are available at www.ti.com/sc/package.
FUNCTION TABLE
(each driver)
OUTPUTS
OUTPUT
ENABLE
INPUT
Y
H
L
Z
L
H
L
H
H
L
H
Z
X
Z
H = TTL high level, L = TTL low level,
X = irrelevant, Z = High impedance
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.
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Copyright 2004, Texas Instruments Incorporated
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1
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