ST485EXDR(2007) View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST485EXDR
(Rev.:2007)

±15KV ESD protected, low power RS-485/RS-422 transceiver

STMicroelectronics 

ST485E

±15KV ESD protected, low power

RS-485/RS-422 transceiver

General features

■ Low quiescent current: 300µA

■ Designed for RS-485 interface application

■ -7V to 12V common mode input voltage range

■ Driver maintains high impedance in 3-state or

with the power OFF

■ 70mV typical input hysteresis

■ 30ns propagation delay, 5ns skew

■ Operates from a single 5V supply

■ Current limiting and thermal shutdown for

driver overload protection

■ ESD protection:

– ±15KV (H.B.M.)

– ±8KV (IEC-1000-4-2 contact discharge)

■ Allows up to 64 transceivers on the bus

Description

The ST485E is a low power transceiver for RS-

485 and RS-422 communication. Each driver

output and receiver input is protected against

±15KV electrostatic discharge (H.B.M.) (ESD)

shocks, without latch-up. These parts contain one

DIP-8

SO-8

driver and one receiver in half duplex

configuration.

This transceiver draws 300µA (typ.) of supply

current when unloaded or fully loaded with

disabled drivers.

It operates from a single 5V supply.

Driver is short-circuit current limited and is

protected against excessive power dissipation by

thermal shutdown circuitry that place the driver

outputs into a high-impedance state.

The ST485E is designed for bi-directional data

communications on multipoint bus transmission

lines (half-duplex applications).

Order codes

Part numbers Temperature range

ST485ECN

ST485EBN

ST485EXN

ST485EBD

ST485ECDR

ST485EBDR

ST485EXDR

0 to 70 °C

-40 to 85 °C

-55 to 125 °C

-40 to 85 °C

0 to 70 °C

-40 to 85 °C

-55 to 125 °C

January 2007

Package

DIP-8

DIP-8

DIP-8

SO-8 (Tube)

SO-8 (Tape & reel)

SO-8 (Tape & reel)

SO-8 (Tape & reel)

Rev 11

Packaging

50parts per tube / 40tube per box

50parts per tube / 40tube per box

50parts per tube / 40tube per box

100parts per tube / 20tube per box

2500 parts per reel

2500 parts per reel

2500 parts per reel

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