®
SP486/487
Quad RS-485/RS-422 Line Drivers
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s
s
s
s
s
s
s
s
RS-485 or RS-422 Applications
Quad Differential Line Drivers
Tri–state Output Control
40ns Typical Driver Propagation
Delays
5ns Skew
–7V to +12V Common Mode Output
Range
100µA Supply Current
Single +5V Supply Operation
Pin Compatible with SN75172,
SN75174, LTC486, and LTC487
DESCRIPTION…
The
SP486
and
SP487
are low–power quad differential line drivers meeting RS-485 and RS-422
standards. The
SP486
features a common driver enable control; the
SP487
provides indepen-
dent driver enable controls for each pair of drivers. Both feature tri–state outputs and wide
common–mode input range. Both are available in 16–pin plastic DIP and SOIC packages.
DI
1
DO
1
A
DO
1
B
EN
DO
2
B
DO
2
A
DI
2
GND
1
SP486
1
16
15
V
CC
DI
4
DO
4
A
DO
4
B
EN
DO
3
B
DO
3
A
DI
3
DI
1
DO
1
A
DO
1
B
EN
1
/EN
2
DO
2
B
DO
2
A
DI
2
GND
1
SP487
1
16
15
V
CC
DI
4
DO
4
A
DO
4
B
EN
3
/EN
4
DO
3
B
DO
3
A
DI
3
2
2
4
3
4
5
6
14
13
12
11
3
4
5
6
4
14
13
12
11
2
7
10
2
7
10
3
8
9
3
8
9
SP486/487
Quad RS-485/RS-422 Line Drivers
© Copyright 2000 Sipex Corporation
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