ST490AB datasheet(1/17 Pages) STMICROELECTRONICS

部件名	ST490AB

功能描述	Low power high speed RS-485/RS-422 transceiver

PDF	17 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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1 / 17 page

February 2008

Rev 5

1/17

17

ST490AB

Low power high speed

RS-485/RS-422 transceiver

Features

■ Low supply current: 5 mA max

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

■ 70 mV typical input hysteresis

■ Designed for 25 Mbps operation

■ Operate from a single 5 V supply

■ ±4 kV ESD protection

■ Current limiting and thermal shutdown for

driver overload protection

Description

The ST490A is a low power transceiver for RS-

485 and RS-422 communications. The device

contains one driver and one receiver in full duplex

configuration. The ST490A draws 5 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.

DIP-8

SO-8

Table 1.

Device summary

Order code

Temperature range

Package

Packaging

ST490ABN

-40 to 85 °C

DIP-8

50 parts per tube / 40 tube per box

ST490ABDR

-40 to 85 °C

SO-8 (tape and reel)

2500 parts per reel

www.st.com

类似零件编号 - ST490AB

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More results

类似说明 - ST490AB

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More results

ST490AB 数据表(PDF) 1 Page - STMicroelectronics

ST490AB 数据表(HTML) 1 Page - STMicroelectronics

类似零件编号 - ST490AB

类似说明 - ST490AB

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ST490AB 数据表(PDF) 1 Page - STMicroelectronics

ST490AB 数据表(HTML) 1 Page - STMicroelectronics

类似零件编号 - ST490AB

类似说明 - ST490AB

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