Datasheet > ELM334_08

ELM334_08

更新时间： 2024-01-21 13:09:09

品牌	Logo	应用领域
ELM		/
页数	文件大小	规格书
7页	52K
描述
Garage Doorman

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ELM334_08 数据手册

ELM334

Garage Doorman

Description

Features

The ELM334 is an integrated circuit for remotely

• Low power CMOS design

monitoring the position of electrical contacts (on a

garage door, for example) and reporting the position

by way of coloured LEDs. A two-wire interface is all

that is needed to convey the position of the door to

two remotely located LEDs, and to also provide

pushbutton control for an electric opener if desired.

• Wide supply range - 3.0 to 5.5 volt operation

• Simultaneous monitoring of three inputs

• Fully debounced inputs

• Two wire interface to LEDs

• Stuck button protection on the control output

• Pulsed control output

This circuit is able to monitor the state of one or

two position sensing switches, provide debouncing

of the signals, and to generate an alternating

(flashing) output when the position changes. In

addition, there is a separate pushbutton input that

may be used to control an electric garage door

opener, or possibly trigger an alarm.

Connection Diagram

PDIP and SOIC

(top view)

Several examples of how the ELM334 might be

used are provided in the Example Applications

section.

VDD

RLED

GLED

VSS

OpenSw

ClosedSw

Control

Applications

• Garage door monitoring and control

• Remote signalling and acknowledgement

• Remote alarm circuits

Block Diagram

VDD

Debounce

Timers

RLED

OpenSw

ClosedSw

Control

Drive

Logic

Debounce

Timers

GLED

VDD

Debounce

Timers

Pulse

Generator

ELM334DSC

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