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ELM334 Datasheet Garage Doorman

Manufacturer: ELM Electronics

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Datasheet Details

Part number ELM334
Manufacturer ELM Electronics
File Size 46.69 KB
Description Garage Doorman
Datasheet download datasheet ELM334 Datasheet

General Description

The ELM334 is an integrated circuit for remotely 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.

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.

Overview

ELM334 Garage Doorman.

Key Features

  • Low power CMOS design.
  • 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 Connection Diagram PDIP and SOIC (top view) VDD 1 RLED 2 GLED 3 PB 4 8 VSS 7 OpenSw 6 ClosedSw 5 Control Block Diagram RLED 2 GLED 3 VDD PB 4 Drive Logic Debounce Timers Debounce Timers VDD 7 OpenS.

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