TW2866-LA2-CR

Overview

The TW2866-LA2-CR is a video decoder integrated circuit manufactured by Renesas Electronics Corporation, designed for security applications. It features four high-quality NTSC/PAL/SECAM video decoders that convert analog composite video signals into digital component YCbCr data. Each channel incorporates a 10-bit ADC along with proprietary clamp and gain controllers. The device utilizes a 4H comb filter to separate luminance and chrominance signals, thereby reducing cross noise artifacts. It supports the ITU-R BT.656 format or time-multiplexed output at 54/108MHz, providing simultaneous four-channel Full D1 and CIF outputs. The unit is housed in a 128-pin LQFP package measuring 14x14mm.

Feature Summary

• Integrates four video decoders with 10-bit ADCs for converting analog composite video to digital YCbCr
• Includes one NTSC/PAL video encoder with two 10-bit DACs supporting CVBS and YC outputs
• Features an audio CODEC with five audio ADCs and one audio DAC for multi-channel processing
• Supports I2S/DSP Master/Slave interfaces for record output and playback input

Applications

• Security surveillance systems requiring multi-channel video decoding
• Video recording equipment utilizing ITU-R BT.656 formats
• Multi-channel audio mixing and playback devices

Procurement Notes

This component is officially classified as obsolete and no longer manufactured by Renesas Electronics Corporation. Availability is limited to existing stock from distributors, which may be depleted without restocking. Verification of authenticity and physical condition is critical when sourcing from secondary markets due to the end-of-life status. Buyers should confirm the specific revision and packaging details against original specifications before finalizing acquisition.

Selection Notes

Engineers replacing this part must evaluate direct substitutes such as the TW2866-LC1-CR, which maintains functional compatibility within the same product family. Design modifications may be necessary if pinouts or electrical characteristics differ between revisions. The transition requires careful assessment of software configuration registers and timing parameters to ensure seamless integration into existing security video architectures without hardware redesign.

Part Context

The TW2866 series represents Renesas' solution for integrated video and audio processing in security environments. This specific model combines decoding, encoding, and audio codec functionalities into a single chip, reducing system complexity. It is part of a broader lineup that includes variants like the TW2868, offering different channel counts and feature sets tailored for various surveillance and multimedia applications.

Replacement Considerations

The TW2866-LC1-CR is listed as a direct replacement by the manufacturer. Verify pin compatibility and register settings before substitution.