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SP1485E

Enhanced Low Power Half-Duplex RS-485 Transceivers

Exar Corporation 

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

(SP1481E)

■ Enhanced ESD Specifications:

+15KV Human Body Model

+15KV IEC1000-4-2 Air Discharge

+8KV IEC1000-4-2 Contact Discharge

RO 1

R

RE 2

DE 3

DI 4

D

8 VCC

7B

6A

5 GND

description

Now Available in Lead Free Packaging

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.

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com



SP1481E-1485E_100_061609

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