HT7612/HT7612B -- General Purpose PIR Controller

General Description

The HT7612/HT7612B is PIR controller specifically designed to interface to PIR sensors to implement motion sensing application products such as intruder alarms.

The controller has the features of PIR sensitivity adjustment and a CDS can be connected to the controller for automatic detection. The HT7612/HT7612B is available in low profile NSOP & DIP packages.

Features

  • Operating voltage: 2.7V ~ 5.5V
  • Standby current typical:
    HT7612: 17uA
    HT7612B: 19uA
  • CDS input
  • CDS debounce time:
    HT7612: 15~20 seconds
    HT7612B: < 3 seconds
  • High noise immunity
  • 40 second power-on delay
  • 10 second high speed warm-up for test mode
  • 1~3783 second adjustable PIR turn on time
  • Output drive for Relay, TRIAC and LED
  • Output drive buzzer alarm
  • Low voltage detector
  • Override function
  • 16-pin DIP/NSOP package

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