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.

SN75ALS174DWR屬于集成電路（IC） > 驅(qū)動器，接收器，收發(fā)器。美國德州儀器公司制造生產(chǎn)的SN75ALS174DWR驅(qū)動器，接收器，收發(fā)器該系列產(chǎn)品的主要功能是提供必需的硬件資源，以通過延長電纜或印制線進行通信。確切的功能會因所采用的通信協(xié)議而異，可能包括諸如瞬態(tài)抑制之類的功能，這些功能對于通信用途可能并非絕對必要，但對于可能的使用環(huán)境卻是明智之選。