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ADM3491

更新时间： 2024-11-17 22:50:03

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
12页	284K
描述
3.3 V, Full Duplex, 840 uA 20 Mbps, EIA RS-485 Transceiver

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ADM3491 数据手册

3.3 V, Full Duplex, 840 ␮A

20 Mbps, EIA RS-485 Transceiver

ADM3491

FEATURES

FUNCTIO NAL BLO CK D IAGRAM

Operates w ith +3.3 V Supply

EIA RS-422 and RS-485 Com pliant Over Full CM Range

19 k⍀ Input Im pedance

ADM3491

Up to 50 Transceivers on Bus

20 Mbps Data Rate

Short Circuit Protection

Specified Over Full Tem perature Range

Therm al Shutdow n

Interoperable w ith 5 V Logic

840 ␮A Supply Current

2 nA Shutdow n Current

Also Available in TSSOP Package

Meets IEC1000-4-4 (>1 kV)

8 ns Skew

Upgrade for MAX 3491, SN75ALS180

APPLICATIONS

Telecom m unications

DTE-DCE Interface

Packet Sw itching

Local Area Netw orks

Data Concentration

Data Multiplexers

Integrated Services Digital Netw ork (ISDN)

AppleTalk

T he receiver contains a fail-safe feature that results in a

logic high output state if the inputs are unconnected

(floating).

Industrial Controls

T he ADM3491 is fabricated on BiCMOS, an advanced

mixed technology process combining low power CMOS

with fast switching bipolar technology.

T he ADM3491 is fully specified over the industrial tem-

perature range and is available in DIP and SOIC packages

as well as a new space saving T SSOP package.

GENERAL D ESCRIP TIO N

T he ADM3491 is a low power differential line transceiver

designed to operate using a single +3.3 V power supply. Low

power consumption coupled with a shutdown mode make it

ideal for power sensitive applications. It is suitable for commu-

nication on multipoint bus transmission lines.

It is intended for balanced data transmission and complies with

both EIA Standards RS-485 and RS-422. It contains a differen-

tial line driver and a differential line receiver, making it suitable

for full duplex data transfer.

T he input impedance is 19 kΩ allowing up to 50 transceivers to

be connected on the bus.

Excessive power dissipation caused by bus contention or by

output shorting is prevented by a thermal shutdown circuit.

T his feature forces the driver output into a high impedance state

if, during fault conditions, a significant temperature increase is

detected in the internal driver circuitry.

REV. 0

Inform ation furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assum ed by Analog Devices for its

use, nor for any infringem ents of patents or other rights of third parties

which m ay result from its use. No license is granted by im plication or

otherwise under any patent or patent rights of Analog Devices.

One Technology Way, P.O. Box 9106, Norw ood, MA 02062-9106, U.S.A.

Tel: 781/ 329-4700

Fax: 781/ 326-8703

World Wide Web Site: http:/ / w w w .analog.com

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与ADM3491相关器件

型号	品牌	获取价格	描述	数据表
ADM3491_15	ADI	获取价格	Full-Duplex, RS-485/RS-422 Transceivers
ADM3491AN	ADI	获取价格	3.3 V, Full Duplex, 840 uA 20 Mbps, EIA RS-485 Transceiver
ADM3491AN	ROCHESTER	获取价格	LINE TRANSCEIVER, PDIP14, PLASTIC, MO-095AB, DIP-14
ADM3491ANZ	ADI	获取价格	暂无描述
ADM3491ANZ-1	ADI	获取价格	3.3V, Full Duplex, 840uA, 20Mbps, EIA RS-485 Transceiver
ADM3491AR	ROCHESTER	获取价格	LINE TRANSCEIVER, PDSO14, MS-012AB, SOIC-14
ADM3491AR	ADI	获取价格	3.3 V, Full Duplex, 840 uA 20 Mbps, EIA RS-485 Transceiver
ADM3491AR-REEL	ADI	获取价格	3.3 V Slew Rate Limited, Half- and Full-Duplex, RS-485/RS-422 Transceivers
ADM3491AR-REEL	ROCHESTER	获取价格	LINE TRANSCEIVER, PDSO14, MS-012AB, SOIC-14
ADM3491AR-REEL7	ADI	获取价格	3.3 V Slew Rate Limited, Half- and Full-Duplex, RS-485/RS-422 Transceivers

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