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
• Stand-by current: 100µA (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
• Operating voltage: 5V~12V
• 16 pin DIP or SOP packaging

APPLICATIONs
• PIR light controllers
• Motion detectors
• Alarm systems
• Auto door bells