TEA6425D

Video Processing Overview

The TEA6425D is a video cellular matrix IC manufactured by STMicroelectronics, designed for switching between video and chroma signals such as CVBS, SVHS, baseband CVBS, and MAC. It features six video inputs and eight outputs with selectable gain of 0.5 or 6.5 dB per output. The device includes two internal YC adders, high-impedance switches for parallel connection, and programmable clamp modes on each input. Controlled via an I2C bus, it supports four sub-addresses for up to four devices in parallel. Electrical characteristics specify a supply voltage range of 7.2V to 8.8V, a bandwidth of 15MHz at -3dB, and crosstalk attenuation of -60dB at 5MHz.

Video Processing Feature Summary

• I2C bus control for input clamping, output gain selection, and switching operations
• Six video inputs and eight outputs with individually selectable high-impedance states
• Two internal YC adders for combining selected Y and C signals
• Programmable clamp mode (sync bottom or average value) on each input

Video Processing Applications

• Switching between video and chroma signals including CVBS and SVHS
• Baseband CVBS signal routing
• MAC signal processing applications

Video Processing Procurement Notes

Verify the component status as discontinued before procurement planning. Confirm the specific package type required, as the TEA6425D denotes the SO20L plastic micropackage variant. Ensure compatibility with existing I2C bus architectures and power supply rails within the specified 7.2V to 8.8V range. Check for alternative sources or equivalent legacy parts if current availability is limited.

Video Processing Selection Notes

Select this component for applications requiring a 6x8 video matrix with independent output control. Consider the 15MHz bandwidth and -60dB crosstalk specifications for signal integrity requirements. Evaluate the need for multiple devices by utilizing the four sub-address capability for parallel connections. Ensure the design accommodates the 20-pin SOIC package dimensions and thermal resistance characteristics.

Video Processing Part Context

The TEA6425 belongs to a family of video cellular matrices intended for professional video signal routing. The TEA6425D specifically refers to the version packaged in a 20-pin plastic micropackage (SO20L). This part serves as a specialized interface for managing complex video signal paths in systems requiring precise gain and clamping adjustments controlled digitally.

Video Processing Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.