Datasheet > ADM3491ANZ

ADM3491ANZ

更新时间： 2024-11-20 15:27:43

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替代型号

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ADM3491ANZ 数据手册

3.3 V, Full-Duplex, 840 μA,

20 Mbps, EIA RS-485 Transceiver

Data Sheet

ADM3491-1

FEATURES

FUNCTIONAL BLOCK DIAGRAM

Operates with 3.3 V supply

EIA RS-422 and RS-485 compliant over full CM range

19 kΩ input impedance

ADM3491-1

Up to 50 transceivers on bus

20 Mbps data rate

Short-circuit protection

Specified over full temperature range

Thermal shutdown

Interoperable with 5 V logic

840 μA supply current

2 nA shutdown current

Available in PDIP, SOIC, and TSSOP

Meets IEC1000-4-4 (>1 kV)

8 ns skew

Figure 1.

Upgrade for MAX3491, SN75ALS180

APPLICATIONS

Telecommunications

DTE–DCE interface

Packet switching

Local area networks

Data concentration

Data multiplexers

Integrated services digital network (ISDN)

AppleTalk

Industrial controls

GENERAL DESCRIPTION

The ADM3491-1 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, makes it

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

nication on multipoint bus transmission lines.

The input impedance is 19 kΩ, allowing up to 50 transceivers to

be connected on the bus. A thermal shutdown circuit prevents

excessive power dissipation caused by bus contention or by

output shorting. This feature forces the driver output into a high

impedance state if a significant temperature increase is detected

in the internal driver circuitry during fault conditions.

The ADM3491-1 is intended for balanced data transmission

and complies with both Electronic Industries Association (EIA)

Standards RS-485 and RS-422. It contains a differential line

driver and a differential line receiver, making it suitable for full-

duplex data transfer.

If the inputs are unconnected (floating), the receiver contains a

fail-safe feature that results in a logic high output state.

The ADM3491-1 is fabricated on BiCMOS, an advanced mixed

technology process combining low power CMOS with fast

switching bipolar technology.

Rev. C

Document Feedback

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registeredtrademarks arethe property of their respective owners.

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

Technical Support

www.analog.com

12 3 4 5 6 7...16

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ADM3491ANZ 替代型号

型号	品牌	替代类型	描述	数据表
ADM483EANZ	ADI	功能相似	暂无描述
ADM485ARZ	ADI	功能相似	Meets EIA RS-485 standard
ADM3485ARZ	ADI	功能相似	3.3 V Slew Rate Limited, Half- and Full-Duplex, RS-485/RS-422 Transceivers

与ADM3491ANZ相关器件

型号	品牌	获取价格	描述	数据表
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
ADM3491ARU	ADI	获取价格	3.3 V, Full Duplex, 840 uA 20 Mbps, EIA RS-485 Transceiver
ADM3491ARU-1	ADI	获取价格	3.3V, Full Duplex, 840uA, 20Mbps, EIA RS-485 Transceiver
ADM3491ARU-1	ROCHESTER	获取价格	LINE TRANSCEIVER, PDSO16, MO-153AB, TSSOP-16
ADM3491ARU-1REEL7	ADI	获取价格	IC LINE TRANSCEIVER, PDSO16, MO-153AB, TSSOP-16, Line Driver or Receiver

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