Datasheet > UM3352EEPA

UM3352EEPA

更新时间： 2024-09-16 01:11:35

品牌	Logo	应用领域
英联电子 - UNIONSEMI		/
页数	文件大小	规格书
13页	316K
描述
ESD-Protected, Slew-Rate-Limited, Fail-Safe, True RS-485 Transceivers

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UM3352EEPA 数据手册

UM3352E

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

True RS-485 Transceivers

UM3352E SOP8/DIP8

General Description

The UM3352E series are ±15kV ESD-protected, high-speed, half-duplex transceivers for RS-485

communication that contain one driver and one receiver. The device features 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 UM3352E features reduced slew-rate driver that minimizes EMI

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

transmission up to 500kbps. It also features enhanced ESD protection. All transmitter outputs and

receiver inputs incorporate advanced structures allowing them to survive ESD events in excess of

±15kV Human Body Mode and IEC61000-4-2 Air Discharge Mode, ±8kV IEC61000-4-2 Contact

Discharge Mode. New ESD structures protect the device whether or not it is powered up and

without degrading the RS-485 common mode range of -7V to 12V. The UM3352E includes a hot

swap circuit inside, which allows live cable insertion and removal. Proprietary protection circuit

built on A and B ports, can dissipate high surge current up to 6A to ground.

The transceivers typically draw 450μA of supply current when unloaded, or when fully loaded with

the drivers disabled. The device has 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

Intelligent Meters and Sensors

Industrial Control

Lighting Systems

Security Systems



ESD Protection for RS-485 I/O Pins

±15kV—Human Body Mode

±15kV—IEC61000-4-2, Air Discharge Mode

±8kV—IEC61000-4-2, Contact Discharge Mode

True Fail-Safe Receiver

Enhanced Slew-Rate Limiting Facilitates Error-Free

Data Transmission



HVAC Application



2µA 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

Hot Swap Capability

Ordering Information

Operating

Temperature

Part Number

Mark Code

Package Type

Shipping Qty

2500pcs/13 Inch

Tape & Reel

UM3352EESA

UM3352EEPA

-40°C to +85°C

UM3352EESA

UM3352EEPA

SOP8

DIP8

-40°C to +85°C

50pcs/Tube

Device Electrical Characteristic Summary

Guaranteed

Date Rate

(Mbps)

Driver/ Shutdown

±15kV

ESD

Protection

Part

Low-Power Slew-Rate

Transceivers

On Bus

Receiver

Enable

Current

(µA)

Number

Shutdown

Limited

UM3352E

0.5

Yes

256

Yes

__________________________________________________________________________

http://www.union-ic.com Rev.07 Sep.2015 1/13

12 3 4 5 6 7...13

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与UM3352EEPA相关器件

型号	品牌	获取价格	描述	数据表
UM3352EESA	UNIONSEMI	获取价格	ESD-Protected, Slew-Rate-Limited, Fail-Safe, True RS-485 Transceivers
UM3381	ETC	获取价格	Analog IC
UM3381-1	ETC	获取价格	Analog IC
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UM3382-3	ETC	获取价格	Analog IC
UM3383	ETC	获取价格	Analog IC

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