Datasheet > UM3085E_15

UM3085E_15

更新时间： 2024-02-11 16:25:03

品牌	Logo	应用领域
英联电子 - UNIONSEMI		/
页数	文件大小	规格书
12页	346K
描述
ESD-Protected, Slew-Rate-Limited, Fail-Safe, True RS-485 Transceivers

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数据手册

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UM3085E_15 数据手册

UM3085E/UM3088E

±15kV ESD-Protected, Slew-Rate-Limited, Fail-Safe,

True RS-485 Transceivers

UM3085E/UM3088E SOP8/DIP8

General Description

The UM3085E, UM3088E are ±15kV ESD-protected, high-speed transceivers for RS-485

communication that contain one driver and one receiver. These devices feature fail-safe circuitry,

which guarantees a logic-high receiver output when the receiver inputs are open, shorted or idle.

This means that the receiver output will be logic high if all transmitters on a terminated bus are

disabled (high impedance). The UM3085E features reduced slew-rate driver that minimizes EMI

and reduces reflections caused by improperly terminated cables, allowing error-free data

transmission up to 500kbps. While partially slew-rate limited UM3088E speeds up to 2.5Mbps.

All devices feature enhanced ESD protection. All transmitter outputs and receiver inputs are

protected to ±15kV using the Human Body Model and IEC61000-4-2, Air-Gap Discharge.

The transceivers typically draw 400μA of supply current when unloaded, or when fully loaded

with the drivers disabled. All devices have a 1/8-unit-load receiver input impedance that allows up

to 256 transceivers on the bus and are intended for half-duplex communications.

Applications

Features



RS-485 Transceivers

Level Translators

Industrial-Control Local Area Networks

Transceivers for EMI-Sensitive

Applications



ESD Protection for RS-485 I/O Pins

±15kV—Human Body Model

±15kV—IEC61000-4-2, Air-Gap Discharge

True Fail-Safe Receiver while Maintaining

EIA/TIA-485 Compatibility

Enhanced Slew-Rate Limiting Facilitates

Error-Free Data Transmission

2nA Low-Current Shutdown Mode

-7V to +12V Common-Mode Input Voltage

Range



Allows up to 256 Transceivers on the Bus

Thermal Shutdown

Current-Limiting for Driver Overload

Protection

Ordering Information

Part Number

Operating

Temperature

Marking Code

Packaging Type

UM3085EESA

UM3085EEPA

UM3088EESA

UM3088EEPA

-40°C to +85°C

UM3085EESA

UM3085EEPA

UM3088EESA

UM3088EEPA

SOP8

DIP8

SOP8

DIP8

Selection Guide

Guaranteed

Driver/ Shutdown

±15kV

Part

Low-Power Slew-Rate

Transceivers

On Bus

Date Rate

Number

Receiver

Enable

Yes

Current

(nA)

ESD

Protection

Yes

Shutdown

Limited

(Mbps)

UM3085E

UM3088E

0.5

2.5

Yes

256

Yes

________________________________________________________________________

http://www.union-ic.com Rev.05 Sep.2015 1/12

12 3 4 5 6 7...12

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与UM3085E_15相关器件

型号	品牌	获取价格	描述	数据表
UM3085EEPA	UNIONSEMI	获取价格	ESD-Protected, Slew-Rate-Limited, Fail-Safe, True RS-485 Transceivers
UM3085EESA	UNIONSEMI	获取价格	ESD-Protected, Slew-Rate-Limited, Fail-Safe, True RS-485 Transceivers
UM3087E	UNIONSEMI	获取价格	Â±15kV ESD-Protected, Fail-Safe, Hot-Swappabl
UM3087EEPA	UNIONSEMI	获取价格	Â±15kV ESD-Protected, Fail-Safe, Hot-Swappabl
UM3087EESA	UNIONSEMI	获取价格	Â±15kV ESD-Protected, Fail-Safe, Hot-Swappabl
UM3088E	UNIONSEMI	获取价格	ESD-Protected, Slew-Rate-Limited, Fail-Safe, True RS-485 Transceivers
UM3088EEPA	UNIONSEMI	获取价格	ESD-Protected, Slew-Rate-Limited, Fail-Safe, True RS-485 Transceivers
UM3088EESA	UNIONSEMI	获取价格	ESD-Protected, Slew-Rate-Limited, Fail-Safe, True RS-485 Transceivers
UM3089E	UNIONSEMI	获取价格	Â±15kV ESD-Protected, Fail-Safe, Hot-Swappabl
UM3089EESD	UNIONSEMI	获取价格	Â±15kV ESD-Protected, Fail-Safe, Hot-Swappabl

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