ST491A

更新时间： 2024-10-31 22:42:43

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		/
页数	文件大小	规格书
12页	272K
描述
LOW POWER HIGH SPEED RS-485/RS-422 TRANSCEIVER

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ST491A 数据手册

ST491A

LOW POWER HIGH SPEED RS-485/RS-422 TRANSCEIVER

■

LOW SUPPLY CURRENT: 5mA MAX

DESIGNED FOR RS485 INTERFACE

APPLICATIONS

■

-7 TO 12 COMMON MODE INPUT VOLTAGE

RANGE

■

70mV TYPICAL INPUT HYSTERESIS

DESIGNED FOR 25Mbps OPERATION

OPERATE FROM SINGLE 5 SUPPLY

±4kV ESD PROTECTION

CURRENT LIMITING AND THERMAL

SHUTDOWN FOR DRIVER OVERLOAD

PROTECTION

DIP

SOP

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.

DESCRIPTION

The ST491A 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 ST491A draws 5mA (typ.) of

supply current when unloaded and operates from

a single 5V supply.

ORDERING CODES

Temperature

Type

Package

Comments

Range

ST491ACN

ST491ABN

ST491ACD

ST491ABD

ST491ACDR

ST491ABDR

0 to 70 °C

-40 to 85 °C

0 to 70 °C

DIP-14

25parts per tube / 40tube per box

SO-14 (Tube)

50parts per tube / 20tube per box

2500 parts per reel

-40 to 85 °C

0 to 70 °C

SO-14 (Tape & Reel)

-40 to 85 °C

2500 parts per reel

July 2003

1/12

12 3 4 5 6 7...12

中文翻译

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