Datasheet > ADM485E_15

ADM485E_15

更新时间： 2024-01-29 17:46:42

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
16页	286K
描述
Half-Duplex, RS-485/RS-422 Transceivers

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中文翻译

获取价格

数据手册

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ADM485E_15 数据手册

5 V, ± ±5 ꢀV ꢁES ꢂProteotꢃ

Half-Supltx, RE-485/RE-422 TPansetivtPs

ASM485ꢁ/ASM487ꢁ/ASM±487ꢁ

FEATURES

FUNCTIONAL BLOCK DIAGRAM

TIA/EIA RS-485/RS-422 compliant

ESD protection on RS-485 I/O pins

15 kV human body model (HBM)

Data rates

ADM485E/

ADM487E/

ADM1487E

ADM487E: 250 kbps

ADM485E/ADM1487E: 2.5 Mbps

Half-duplex

Reduced slew rates for low EMI

Common-mode input range: −7 V to +12 V

Thermal shutdown and short-circuit protection

8-lead SOIC packages

ADM487EW qualified for automotive applications

GND

Figure 1.

APPLICATIONS

Energy/power metering

Lighting systems

Industrial control

Telecommunications

Security systems

Instrumentation

GENERAL DESCRIPTION

The ADM485E/ADM487E/ADM1487E are 5 V, low power

data transceivers with 15 kV ESD protection suitable for half-

duplex communication on multipoint bus transmission lines.

They are designed for balanced data transmission and comply

with Telecommunication Industry Association/Electronics

Industries Association (TIA/EIA) standards RS-485 and RS-422.

The ADM487E and ADM1487E have a 1/4 unit load receiver

input impedance that allows up to 128 transceivers on a bus,

whereas the ADM485E allows up to 32 transceivers on a bus.

Because only one driver is enabled at any time, the output of a

disabled or power-down driver is three-stated to avoid overloading

the bus.

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 output

shorting is prevented with a thermal shutdown circuit.

The parts are fully specified over the industrial temperature

ranges and are available in 8-lead SOIC packages.

Table 1. Selection Table

Guaranteed

Half-/Full- Data Rate

Part

Number

Slew Rate Low Power Driver/Receiver Quiescent

Number of

Duplex

(Mbps)

Limited

Shutdown

Enable

Current (μA)

Nodes on Bus Count

ADM485E

ADM487E

ADM1487E Half

Half

2.5

0.25

2.5

Yes

300

120

230

128

Rev. B

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.

Tel: 781.329.4700 www.analog.com

12 3 4 5 6 7...16

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与ADM485E_15相关器件

型号	品牌	获取价格	描述	数据表
ADM485EARZ	ADI	获取价格	5 V, 【15 kV ESD Protected Half-Duplex, RS-485
ADM485EARZ-REEL7	ADI	获取价格	5 V, 【15 kV ESD Protected Half-Duplex, RS-485
ADM485JN	ADI	获取价格	+5 V Low Power EIA RS-485 Transceiver
ADM485JN	ROCHESTER	获取价格	LINE TRANSCEIVER, PDIP8, MO-095AA, PLASTIC, DIP-8
ADM485JNZ	ADI	获取价格	5 V, Low Power, 5 Mbps, Half Duplex EIA RS-485 Transceiver
ADM485JNZ	ROCHESTER	获取价格	LINE TRANSCEIVER, PDIP8, MO-095AA, PLASTIC, DIP-8
ADM485JNZ1	ADI	获取价格	Meets EIA RS-485 standard
ADM485JR	ADI	获取价格	+5 V Low Power EIA RS-485 Transceiver
ADM485JR-REEL	ADI	获取价格	Meets EIA RS-485 standard
ADM485JR-REEL	ROCHESTER	获取价格	LINE TRANSCEIVER, PDSO8, MS-012AA, SOIC-8

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