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 adjust

ment 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: 17A

HT7612B: 19A

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 packages

Applications

PIR light control

Motion detectors

Alarm system

Auto door bells