This part is a kind of semiconductor called TT8486A.

Function of this product has Product Specification.

Manufacturers : Tontek

Image and pinout :

Some of the text within the PDF file :

TONTEK DESIGN TECHNOLOGY LTD. REFERENCE ONLY DATE : 26- MAR - 2001 VESION : 2.0 TT8486A/TT6061A PRODUCT SPECIFICATION GENERAL DESCRIPTION : TT8486A/TT6061A IC IS A KIND OF CMOS TECHNOLOGY PREMITTED TO DESIGN 3 STEPS TOUCH - DIMM ER. THE DETAILED FUNCTIONS ARE AS FOLLOW : TT8486A/(TT6061A): OFF NIGHT MEDIUM HIGH OFF THE TIME THAT TRIAC TURN ON IS AS FOLLOWING FOR EACH STEP OF ALL FUNCTION 3- STEP MODE NIGHT MEDIUM HIGH AC=110V/60HZ 5.9 ¡Ó0.4mS 4. 0 ¡Ó0.3mS 1.0 ¡Ó0.2mS AC=220V/50HZ 6.8 ¡Ó0.4mS 4.5 ¡Ó0.3mS 0.9 ¡Ó0.2mS PIN ASSIGNMENT PIN NO. PIN NAME FUNCTION DESCRIPTION I/O 1 CK SYSTEM CLOCK INPUT I 2 FI 60 OR 50 HZ LINE FREQUENCY I 3 VDD POWER INPUT PIN FOR VDD P 4 TI TOUCH INPUT B 5 CI SENSOR CONTROL INPUT B 6 NC 7 VSS POWER INPUT PIN FOR VSS P 8 AT ANGLE [ ... ]

TT8486A PDF Datasheet Download