This part is a kind of semiconductor called PT2272-M4.

Function of this product has Remote Control Decoder.

Manufacturers : Princeton Technology Corp

Image and pinout :

Some of the text within the PDF file :

Remote Control Decoder Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT2272 DESCRIPTION PT2272 is a remote control decoder paired with PT2262 utilizing CMOS Technology. It has 12 bits of tri-state address pins providing a maximum of 531,441 (or 312) address codes; thereby, drastically reducing any code collision and unauthorized code scanning possibilities. PT2272 is available in several options to suit every application need: varai ble number of data output pins, latch or momentary output type. FEATURES • CMOS Technology • Low Power Consumption • Very High Noise Immunity • Up to 12 Tri-State Code Address Pins • Up to 6 Data Pins • Wide Range of Operating Voltage: VCC=4~15V • Single Resistor Oscillator • Latch or Momentary Output Type • Avail [ ... ]

PT2272-M4 PDF Datasheet Download