TSH344ID

Overview

The TSH344ID is a triple single-supply video buffer manufactured by STMicroelectronics. It features an internal gain of 6dB and a bandwidth of 340MHz. The device operates on a 3V to 5.5V supply, with typical performance tested at 5V. It guarantees a low output rail of 60mV max on a 150Ω load. Key electrical parameters include a slew rate of 740V/μs, input bias current of 16μA max, and supply current of 13mA per buffer. It is housed in an SO-8 package.

Feature Summary

• Triple channel architecture with matched 6dB internal gain for RGB signal buffering
• High-speed performance with 340MHz bandwidth and 740V/μs slew rate
• Low output rail capability guaranteed at 60mV maximum under load
• Single-supply operation optimized for direct connection to video DAC outputs

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm packaging type. The 'ID' suffix indicates tube packing, while 'IDT' denotes tape and reel. Confirm availability status as distribution channels may list obsolete or limited stock items. Ensure the component meets environmental compliance standards such as ECOPACK requirements before finalizing procurement decisions.

Selection Notes

Select this component when driving RGB signals from video DACs without synchronization tips. It is suitable for applications requiring high linearity and low harmonic distortion. Consider the SO-8 package size for space-constrained designs. Verify that the system power supply falls within the 3V to 5.5V range and that the load impedance matches the specified 100Ω or 150Ω conditions for optimal performance.

Part Context

The TSH344 belongs to the TSH34x series of single-supply video buffers. It is designed specifically for driving RGB components on video lines. Unlike the TSH343, which handles Y-Pb-Pr signals with synchronization tips, the TSH344 is optimized for digital synchronization scenarios. It shares similar architectural benefits with other members of the family but focuses on RGB output buffering.

Replacement Considerations

The TSH343 is a related component for Y-Pb-Pr signals. No direct public substitute part numbers are confirmed in the provided datasheet. Designers should verify pin compatibility and electrical specifications if considering alternative vendors or newer generations from the same manufacturer.

FAQ

What is the maximum low-level output voltage?

The low-level output voltage is guaranteed to be a maximum of 60mV when tested on a 150Ω load.

Does the TSH344 require external capacitors for AC coupling?

No, it is designed for single-supply operation and does not use AC output coupling capacitors due to its inability to sink output current.

What is the delay between channels?

The delay between each channel is minimal, typically less than 0.5ns, ensuring synchronized video outputs.