General Description

The HT7704 series are CMOS LSIs in 8-lead DIP package. They are designed to control the brightness of an incandescent lamp by changing the triggering angles of the TRIAC with touch sense input.

Feature

• Operating voltage: 4~10V

• High noise immunity CMOS technology

• High sensitivity and stability

• Polarity insensitive with AC line

• Minimal external components required

• Loading range of sense input from 0 to 1000pf

• 50/60 Hz selectable

• HT7704A: 3 steps control

HT7704B: 4 steps control

HT7704C: On/off switch

• 8 pin DIP/SOP package