Datasheet > ADM383

ADM383

更新时间： 2024-11-18 04:04:39

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
16页	373K
描述
5 V Low Power, Slew-Rate Limited RS-485/RS-422 Transceiver

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ADM383 数据手册

5 V Low Power, Slew-Rate Limited

RS-485/RS-422 Transceiver

ADM483

FEATURES

FUNCTIONAL BLOCK DIAGRAM

EIA RS-485/RS-422-compliant

Data rates up to 250 kbps

Slew-rate limited for low EMI

ADM483

100 nA supply current in shutdown mode

Low power consumption (120 µA)

Up to 32 transceivers on one bus

Outputs high-z when disabled or powered off

–7 V to +12 V bus common-mode range

Thermal shutdown and short-circuit protection

Pin-compatible with MAX483

GND

Specified over –40°C to +85°C temperature range

Available in 8-lead SOIC package

Figure 1.

APPLICATIONS

Low power RS-485 applications

EMI sensitive systems

DTE-DCE interfaces

Industrial control

Packet switching

Local area networks

Level translators

GENERAL DESCRIPTION

The ADM483 is a low power differential line transceiver suitable

for half-duplex data communication on multipoint bus trans-

mission lines. It is designed for balanced data transmission, and

complies with EIA Standards RS-485 and RS-422.The part

contains a differential line driver and a differential line receiver.

Both share the same differential pins, with either the driver or

the receiver being enabled at any given time.

The receiver contains a fail-safe feature that results in a logic

high output state if the inputs are unconnected (floating).

The driver outputs are slew-rate limited to reduce EMI and data

errors caused by reflections from improperly terminated buses.

Excessive power dissipation caused by bus contention or by

output shorting is prevented by a thermal shutdown circuit.

The part is fully specified over the industrial temperature range,

and is available in an 8-lead SOIC package.

The device has an input impedance of 12 kΩ, allowing up to

32 transceivers on one bus. Since only one driver should be

enabled at any time, the output of a disabled or powered-down

driver is three-stated to avoid overloading the bus. This high

impedance driver output is maintained over the entire

common-mode voltage range from –7 V to +12 V.

Rev. 0

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

registered trademarks are the property of their respective owners.

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

Tel: 781.329.4700

Fax: 781.326.8703

www.analog.com

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