ST485AB_07 datasheet(1/19 Pages) STMICROELECTRONICS

Numer części	ST485AB

Szczegółowy opis	Very high speed low power RS-485/RS-422 transceiver

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Producent	STMICROELECTRONICS [STMicroelectronics]

Strona internetowa	http://www.st.com

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August 2007

Rev. 3

1/19

19

ST485AB

Very high speed

low power RS-485/RS-422 transceiver

Features

■ Low supply current: 5 mA max

■ High data rate > 30 Mbps

■ Designed for RS 485 interface applications

■ -7 to 12 common mode input voltage range

■ Driver maintains high impedance in 3-state or

with the power off

■ 70mV typical input hysteresis

■ Operate from single 5 supply

■ ±4 kV ESD protection

■ Current limiting and thermal shutdown for

driver overload protection

■ Latch-up free up to 500 mA

Description

The ST485A is a low power, high speed

transceiver for RS-485 and RS-422

communications. The device contains one driver

and one receiver in half duplex configuration. The

ST485A draws 3 mA (typ.) of supply current when

unloaded or fully loaded with disabled drivers. It

operates from a single 5 V 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 receiver

input has a fail-safe feature that guarantees a

logic high output if both inputs are open circuit.

The ST485A is designed for bi-directional data

communications or multipoint bus transmission

lines.

DIP-8

SO-8

Table 1.

Device summary

Order code

Temperature

range

Package

Packaging

ST485ABN

-40 to 85 °C

DIP-8

50parts per tube / 40tube per box

ST485ABDR

-40 to 85 °C

SO-8 (Tape & reel)

2500 parts per reel

www.st.com

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ST485AB Arkusz danych(PDF) 1 Page - STMicroelectronics

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Podobny numer części - ST485AB_07

Podobny opis - ST485AB_07

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