You may encounter slight variations of this part number in technical manuals or from distributors like Alldatasheet VCT49X3F-PZ-F-1000:

Search for "VCT49X3F datasheet equivalent" or "VCT49X3F cross reference". Many Philips and Infineon tuner ICs are drop-in replacements.

Supports multi-channel signal processing and high-density data transmission. Technical Features

Disclaimer: Component specifications are subject to change by the manufacturer. Always refer to the official VCT49x3 series datasheet for precise, project-critical data.

Firmware is typically stored in an external EEPROM or flash memory chip (often 8-pin devices like 24Cxx or 25xx series) located on the PCB. Programming usually requires:

Extended range from -40°C to 105°C (TA), making it suitable for harsh environments .

Verify the ceramic resonator/crystal oscillator connected to the clock pins. Use an oscilloscope to ensure it is vibrating at its rated frequency (usually 20.25 MHz or 18.432 MHz).

Requires distinct 5V analog rails and 3.3V digital core supplies to prevent digital noise from contaminating video paths. VIN1, VIN2, CIN

IC distributor sites like and BonChip may offer a downloadable PDF for the "VCT49X3F-PY-F1000," but the actual file is often not available or behind a paywall.

Supports external communication with tuners and EEPROM. Operating Environment

Processing sound from the tuner or external AV sources.

Look for additional lines on the component. Many ICs have:

Often caused by a failure of the internal RGB blanking matrix or a loss of the 5V VDDAcap V sub cap D cap D cap A end-sub