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SP483EDS/05

SP483E Low EMI Half-Duplex RS485 Transceiver

© Copyright 2000 Sipex Corporation

SP483E

s +5V Only

s Low Power BiCMOS

s Driver/Receiver Enable for Multi-Drop

configurations

s Enhanced ESD Specifications:

+15KV Human Body Model

+15KV IEC1000-4-2 Air Discharge

+8KV IEC1000-4-2 Contact Discharge

s Low EMI Transceiver limited to 250kbps

Enhanced Low EMI Half-Duplex

RS-485 Transceiver

R

D

RO 1

RE 2

DE 3

DI 4

8 Vcc

7 B

6 A

5 GND

SP483E

DESCRIPTION

The SP483E is a half-duplex transceiver that meets the specifications of RS-485 and RS-422

serial protocols with enhanced ESD performance. The ESD tolerance has been improved on

this device to over

±15kV for both Human Body Model and IEC1000-4-2 Air Discharge

Method. This device is pin-to-pin compatible with Sipex's SP483 device as well as popular

industry standards. As with the original version, the SP483E features Sipex's BiCMOS

design allowing low power operation without sacrificing performance. The SP483E meet the

requirements of the RS-485 and RS-422 protocols up to 250kbps under load. The SP483E

is internally slew rate limited to reduce EMI and can meet the requirements of RS-485 and

RS-422 up to 250kbps. The SP483E is also equipped with a low power Shutdown mode.

®