General Description
The HT761x is a CMOS LSI chip designed for use in automatic PIR lamp control. It can operate with a 2-wire configuration for triac applications or with a 3-wire configuration for relay applications. The chip is equipped with operational amplifiers, a comparator, timer, a zero crossing detector, control circuit, a voltage regulator, a system oscillator, and an output timing oscillator.

Features
Operating voltage: 5V~12V
Standby current: 100A (Typ.)
On-chip regulator
Adjustable output duration
CDS input
40 second warm-up
ON/AUTO/OFF selectable by MODE pin
Override function
Auto-reset if the ZC signal disappears over 3 seconds
16-pin DIP package

Applications
PIR light controllers)
Motion detectors
Alarm systems
Auto door bells