1

Rev:C Date: 02/26/04

SP1485E Low Power Half-Duplex RS485 Transceivers

© Copyright 2004 Sipex Corporation

SP1485E

■ +5V supply

■ Low Power BiCMOS

■ Driver/Receiver Enable for Multi-Drop

configurations

■ Available in 8 Pin NSOIC or PDIP

packages

■ Enhanced ESD Specifications:

+15KV Human Body Model

+15KV IEC1000-4-2 Air Discharge

+8KV IEC1000-4-2 Contact Discharge

Enhanced Low Power Half-Duplex

RS-485 Transceivers

®

PRELIMINARY

R

D

RO 1

RE 2

DE 3

DI 4

8 Vcc

7 B

6 A

5 GND

SP1485E

The SP1485E 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 SP485 devices as well as popular

industry standards. As with the original version, the SP1485E features Sipex's BiCMOS

design allowing low power operation without sacrificing performance. The SP1485E meets

the requirements of the RS-485 and RS-422 protocols up to 20Mbps under load.

DESCRIPTION

1

2

3

4

5

6

7

8

RO

SP1485E

8 Pin - nSOIC

DE

RE

B

VCC

A

DI

GND

BLOCK DIAGRAM