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SP485EMN-L

Enhanced Low Power Half-Duplex RS-485 Transceivers

Exar Corporation 

SP481E / SP485E

Enhanced Low Power Half-Duplex

RS-485 Transceivers

• +5V Only

• Low Power BiCMOS

• Driver / Receiver Enable for Multi-Drop

configurations

• Low Power Shutdown mode (SP481E)

• Enhanced ESD Specifications:

+/-15kV Human Body Model

+/-15kV IEC1000-4-2 Air Discharge

+/-8kV IEC1000-4-2 Contact Discharge

• Available in RoHS Compliant, Lead Free

Packaging.

DESCRIPTION

The SP481E and SP485E are a family of half-duplex transceivers that meet the specifica-

tions 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 ver-

sions, the SP481E and SP485E feature Exar's BiCMOS design allowing low power opera-

tion without sacrificing performance. The SP481E and SP485E meet the requirements of

the RS-485 and RS-422 protocols up to 10Mbps under load. The SP481E is equipped with

a low power shutdown mode.

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



SP481E,485E_102_080810

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