ADM485AR Analog Devices, ADM485AR Datasheet

ADM485AR

Manufacturer Part Number

ADM485AR

Description

Manufacturer

Analog Devices

Datasheets

1.ADM485AR.pdf (12 pages)

2.ADM485AR.pdf (8 pages)

Specifications of ADM485AR

Case

SOP8

00+

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

ADM485AR

Manufacturer:

Quantity:

868

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

ADM485AR

Manufacturer:

Quantity:

5 510

Company:

Meier Automation Equipment Co., Limited

Part Number:

ADM485AR

Manufacturer:

ADI/亚德诺

Quantity:

20 000

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

ADM485AR-REEL

Manufacturer:

LINEAR

Quantity:

739

Company:

Meier Automation Equipment Co., Limited

Part Number:

ADM485AR-REEL

Manufacturer:

ADI/亚德诺

Quantity:

20 000

Company:

Meier Automation Equipment Co., Limited

Part Number:

ADM485ARM

Manufacturer:

ADI/亚德诺

Quantity:

20 000

Company:

HardFindElectronics Ltd

Part Number:

ADM485ARMZ

Manufacturer:

ADI

Quantity:

12 000

Company:

Meier Automation Equipment Co., Limited

Part Number:

ADM485ARMZ

Manufacturer:

ADI/亚德诺

Quantity:

20 000

Company:

H&T Electronics

Part Number:

ADM485ARMZ-REEL7

Quantity:

690

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

ADM485ARREEL

Manufacturer:

AVAGO

Quantity:

3 546

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

ADM485ARZ

Manufacturer:

ADI

Quantity:

165

Company:

BOSTOCK HK LIMITED

Part Number:

ADM485ARZ

Quantity:

2 873

Company:

HardFindElectronics Ltd

Part Number:

ADM485ARZ

Manufacturer:

ADI

Quantity:

2 554

Company:

Meier Automation Equipment Co., Limited

Part Number:

ADM485ARZ

Manufacturer:

ADI/亚德诺

Quantity:

20 000

Company:

BOSTOCK HK LIMITED

Part Number:

ADM485ARZ-REEL

Manufacturer:

Quantity:

1 000

Current page: 1 of 12
Download datasheet (255Kb)

GENERAL DESCRIPTION

The ADM485 is a differential line transceiver suitable for high

speed bidirectional 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 the driver and the receiver may be enabled independently.

When disabled, the outputs are three-stated.

The ADM485 operates from a single 5 V power supply. Excessive

power dissipation caused by bus contention or by output shorting

is prevented by a thermal shutdown circuit. This feature forces

the driver output into a high impedance state if during fault condi-

tions a significant temperature increase is detected in the internal

driver circuitry.

Up to 32 transceivers may be connected simultaneously on a bus,

but only one driver should be enabled at any time. It is important,

therefore, that the remaining disabled drivers do not load the bus.

To ensure this, the ADM485 driver features high output imped-

ance when disabled and when powered down.

REV. E

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. 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.

FEATURES

Meets EIA RS-485 Standard

5 Mbps Data Rate

Single 5 V Supply

–7 V to +12 V Bus Common-Mode Range

High Speed, Low Power BiCMOS

Thermal Shutdown Protection

Short-Circuit Protection

Driver Propagation Delay: 10 ns

Receiver Propagation Delay: 15 ns

High Z Outputs with Power Off

Superior Upgrade for LTC485

APPLICATIONS

Low Power RS-485 Systems

DTE-DCE Interface

Packet Switching

Local Area Networks

Data Concentration

Data Multiplexers

Integrated Services Digital Network (ISDN)

This minimizes the loading effect when the transceiver is not being

used. The high impedance driver output is maintained over the

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

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

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

The ADM485 is fabricated on BiCMOS, an advanced mixed

technology process combining low power CMOS with fast switching

bipolar technology. All inputs and outputs contain protection

against ESD; all driver outputs feature high source and sink current

capability. An epitaxial layer is used to guard against latch-up.

The ADM485 features extremely fast switching speeds. Minimal

driver propagation delays permit transmission at data rates up to

5 Mbps while low skew minimizes EMI interference.

The part is fully specified over the commercial and industrial

temperature range and is available in PDIP, SOIC, and small

footprint MSOP packages.

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

Tel: 781/329-4700

Fax: 781/326-8703

FUNCTIONAL BLOCK DIAGRAM

EIA RS-485 Transceiver

ADM485

5 V Low Power

ADM485

GND

www.analog.com

Related parts for ADM485AR

Related keywords

ADM485AR datasheet
ADM485AR data sheet
ADM485AR pdf datasheet
ADM485AR component
ADM485AR part
ADM485AR distributor
ADM485AR RoHS
ADM485AR datasheet download