®
SP3486 and SP3487
+3.3V Low Power Quad
RS-485/RS-422 Line Drivers
■
RS-485 or RS-422 Quad Differential
Line Drivers
■
Operates from a single +3.3V supply
■
Interoperable with +5.0V logic
■
Tri-state Output Control
■
-7V to +12V Common-Mode Input
Voltage Range
■
Common Driver Enable Control (SP3486)
■
Independent Driver Enable Controls for
each pair of Drivers (SP3487)
■
Compatibility with LTC486
and SN75172 (SP3486)
■
Compatibility with LTC487
and SN75174 (SP3487)
DESCRIPTION
The
SP3486
and the
SP3487
are +3.3V low power quad drivers that meet the specifications
of the RS-485 and RS-422 serial protocols. These devices are pin-to-pin compatible with
Sipex's SP486 and SP487 devices as well as popular industry standards. The
SP3486
and
SP3487
feature Sipex's BiCMOS process allowing low power operation without sacrificing
performance. The
SP3486
and
SP3487
meet the electrical specifications of RS-485 and
RS-422 serial protocols up to 10Mbps under load. The SP3486 features a common driver
enable control. The
SP3487
provides independent driver enable controls for each pair of
drivers. Both devices feature tri-state outputs and a -7V to +12V common-mode input voltage
range.
DI
1
DO
1
A
DO
1
B
EN
DO
2
B
DO
2
A
DI
2
GND
1
SP3486
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
SP3487
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
10/15/02
SP3486/3487 Low Power Quad RS485/422 Line Drivers
© Copyright 2002 Sipex Corporation
1
SIPEX [ SIPEX CORPORATION ]
