SP1481E/SP1485E
Enhanced Low Power Half-Duplex
RS-485 Transceivers
■ +5V Only
■ Low Power BiCMOS
■ Driver/Receiver Enable for Multi-Drop
configurations
■ Low Power Shutdown Mode
(SP48E)
■ Enhanced ESD Specifications:
+15KV Human Body Model
+15KV IEC1000-4-2 Air Discharge
+8KV IEC1000-4-2 Contact Discharge
RO 1
RE 2
DE 3
DI 4
R
8 V
CC
7 B
6 A
D
5 GND
description
The SP1481E and the SP1485E are a family of half-duplex transceivers that meet the
specifications of RS-485 and RS-422 serial protocols with enhanced ESD performance. The
ESD tolerance has been improved on these devices to over +15KV for both Human Body
Model and IEC1000-4-2 Air Discharge Method. These devices are pin-to-pin compatible
with Exar's SP481 and SP485 devices as well as popular industry standards. As with the
original versions, the SP1481E and the SP1485E feature Exar's BiCMOS design allowing
low power operation without sacrificing performance. The SP1481E and SP1485E meet the
requirements of the RS-485 and RS-422 protocols up to 20Mbps under load. The SP1481E
is equipped with a low power Shutdown mode.
Now Available in Lead Free Packaging
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com
SP48E-485E_00_06609
EXAR [ EXAR CORPORATION ]
