TSH346ID

Overview

The TSH346ID is a triple single-supply video buffer and filter designed for high-definition video applications. It features three matched amplifiers with an internal gain of 6 dB and a 36 MHz low-pass filter, optimized for driving YUV, YPbPr, or RGB signals on 75-ohm video lines. The device operates from a 4.5 V to 5.5 V supply within a -40°C to +85°C temperature range. Key electrical characteristics include a typical total supply current of 51.6 mA, an input bias current of 3.6 µA, and a DC output shift of 240 mV at 25°C. It is housed in an SO-8 plastic package.

Feature Summary

• Integrates a 36 MHz sixth-order filtering stage specifically tuned for HD video outputs.
• Includes an internal input DC level shifter that eliminates the need for external input capacitors.
• Provides three matched amplifiers with a fixed internal gain of 6 dB.
• Capable of AC or DC output coupling to drive standard video loads.

Applications

• High-end video systems
• High definition TV (HDTV)
• Broadcast and graphic video
• Multimedia products

Procurement Notes

Verify component authenticity through authorized STMicroelectronics distributors or verified secondary market channels. Confirm the specific ordering suffix matches the required packaging format, as the ID designation corresponds to tube packing. Ensure the procurement source provides valid traceability documentation to mitigate risks associated with obsolete product sourcing.

Selection Notes

Select this component when designing circuits requiring precise matching between multiple video channels. The integrated DC level shifter simplifies board layout by removing input coupling capacitors. Verify that the application strictly utilizes a single 5 V power supply, as the device performance is optimized for this voltage range and specified load conditions.

Part Context

The TSH346 belongs to the TSH34x series of video buffers manufactured by STMicroelectronics. This family focuses on providing high-performance signal conditioning for analog video interfaces. The TSH346 specifically targets high-definition requirements, distinguishing itself from lower-bandwidth counterparts by its dedicated 36 MHz filtering capability.

Replacement Considerations

Public confirmed substitute part numbers: None identified.