SP481/SP483/SP485
Low Power Half-Duplex RS-485 Transceivers
FEATURES
■
+5V Only
■
Low Power BiCMOS
■
Driver/Receiver Enable
■
Slew Rate Limited Driver for
Low EMI (SP483)
■
Low Power Shutdown Mode (SP481
and SP483)
■
RS-485 and RS-422 Drivers/Receivers
RO 1
R
8
V
CC
B
RE 2
7
DE 3
6
A
D
DI 4
SP485
Top View
5
GND
SP481, SP483, SP485
Pinout (Top View)
DESCRIPTION
The
SP481, SP483,
and the
SP485
are a family of half-duplex transceivers that meet the
requirements of RS-485 and RS-422. Their BiCMOS design allows low power operation
without sacrificing performance. The
SP481
and
SP485
meet the requirements of RS-485
and RS-422 up to 5Mbps. Additionally, the
SP481
is equipped with a low power Shutdown
mode. The
SP483
is internally slew rate limited to reduce EMI and can meet the requirements
of RS-485 and RS-422 up to 250kbps. The
SP483
is also equipped with a low power
Shutdown mode.
RO 1
RE 2
DE 3
DI 4
R
8 Vcc
7 B
6 A
D
SP481, SP483, and SP485
5 GND
Rev. 07/28/04
SP481/483/485 Low Power Half-Duplex RS485 Transceivers
© Copyright 2002 Sipex Corporation
1