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ADM2490E_VA

更新时间： 2024-09-27 08:19:15

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
16页	513K
描述
High Speed, ESD-Protected, Full-Duplex, iCoupler Isolated RS-485 Transceiver

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数据手册

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ADM2490E_VA 数据手册

High Speed, ESD-Protected, Full-Duplex,

iCoupler Isolated RS-485 Transceiver

ADM2490E

FEATURES

FUNCTIONAL BLOCK DIAGRAM

DD2

DD1

Isolated, full-duplex RS-485/RS-422 transceiver

8 kV ESD protection on RS-485 input/output pins

16 Mbps data rate

ADM2490E

Complies with ANSI TIA/EIA-485-A-1998 and

ISO 8482: 1987(E)

TxD

RxD

Suitable for 5 V or 3 V operation (V_DD1

)

High common-mode transient immunity: >25 kV/μs

Receiver has open-circuit, fail-safe design

32 nodes on the bus

Thermal shutdown protection

Safety and regulatory approvals

UL recognition: 5000 V rms isolation voltage

for 1 minute per UL 1577

VDE certificate of conformity

GND

Figure 1.

DIN EN 60747-5-2 (VDE 0884-10 Part 2): 2003-01

DIN EN 60950 (VDE 0805): 2001-12; EN 60950: 2000

_IORM= 848 V peak

Operating temperature range: −40°C to +105°C

Wide body, 16-lead SOIC package

APPLICATIONS

Isolated RS-485/RS-422 interfaces

Industrial field networks

INTERBUS

Multipoint data transmission systems

GENERAL DESCRIPTION

The ADM2490E is an isolated data transceiver with ±± ꢀk EꢁD

protection that is suitable for high speed, full-duplex communi-

cation on multipoint transmission lines. It is designed for balanced

transmission lines and complies with ANꢁI TIA/EIA-4±5-A-199±

and IꢁO ±4±2: 19±7(E). The device employs Analog Devices, Inc.,

iCoupler® technology to combine a 2-channel isolator, a three-

state differential line driver, and a differential input receiver into

a single pacꢀage.

using the human body model (HBM). The logic side of the device

can be powered with either a 5 k or a 3 k supply, whereas the

bus side requires an isolated 5 k supply.

The device has current-limiting and thermal shutdown features

to protect against output short circuits and situations where bus

contention could cause excessive power dissipation.

The ADM2490E is available in a wide body, 16-lead ꢁOIC pacꢀage

and operates over the −40°C to +105°C temperature range.

The differential transmitter outputs and receiver inputs feature

electrostatic discharge circuitry that provides protection to ±± ꢀk

Rev. A

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

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