Hello, 74HC4052 is a differential 4-channel analog multiplexer. It is probably used to switch between several audio channels. PIC16C54A is a small single chip computer from Microchip Devices. It contains an eprom program memory which can be made read protected by the vendor. Steffen Tobias Gogolin wrote: ... > it also has 74HC4052 (logic?) > one PIC16C54A (MC?) > one 24LC02B (Serial EEPROM) > and whatever is inside the tuner case ok thats a TDA9800T a SA5523 and a TBA5737M all from Philips ...
