SN75ALS174集成電路（IC）的驅(qū)動器接收器收發(fā)器規(guī)格書PDF中文資料

1 Features

? Meets or exceeds the requirements of ANSI EIA/

TIA-422-B and RS-485

? High-speed advanced low-power Schottky circuitry

? Designed for up to 20-Mbit/s operation in both

serial and parallel applications

? Designed for multipoint transmission on long bus

lines in noisy environments

? Low supply current requirements 55 mA max

? Wide positive and negative input/output bus

voltage ranges

? Driver output capacity: 60 mA

? Thermal-shutdown protection

? Driver positive- and negative-current limiting

2 Applications

? Motor drives

? Factory automation and control

3 Description

The SN75ALS174 is a quadruple line driver with

tri-state differential outputs. It is designed to meet

the requirements of ANSI Standards EIA/TIA-422-B

and RS-485. This device is optimized for balanced

multipoint bus transmission at rates of up to 20 Mbit/s.

Each driver features wide positive and negative

common-mode output voltage ranges that make

them suitable for party-line applications in noisy

environments.

The SN75ALS174 provides positive- and negativecurrent

limiting and thermal shutdown for protection

from line fault conditions on the transmission bus

line. Shutdown occurs at a junction temperature of

approximately 150°C.

The SN75ALS174 is characterized for operation from

0°C to 70°C.