The TSH345 is a triple single-supply video buffer featuring an internal gain of 6 dB and selectable filtering for HD and SD video outputs on 75 Ω video lines. The TSH345 is ideal to drive YC, CVBS, YUV, YPbPr or RGB signals from video DAC outputs. The main advantage of this circuit is its input DC level shifter. It allows driving video signals on 75 Ω video lines without damaging the synchronization tip and without input or output capacitors when using a single 5 V power supply. The DC level shifter is internally fixed and optimized to keep the output video signals between low and high output rails in the best position for the greatest linearity. The TSH345 is available in SO-14 and TSSOP-14 plastic packages for optimum space saving.
The TSH345 is a triple single-supply video buffer designed for high-end video systems, including high definition TV (HDTV), broadcast, and multimedia products. It features an internal gain of 6 dB and selectable filtering options of 36 MHz, 18 MHz, and 9 MHz to support both HD and SD video outputs on 75 Ω video lines. The device is ideal for driving YC, CVBS, YUV, YPbPr, or RGB signals from video DAC outputs.
| Supply voltage | 4.5 to 5.5 V |
|---|---|
| Operating temperature range | -40 to +85 °C |
| Gain | 6 dB |
| Filtering options | 36 MHz, 18 MHz, 9 MHz |
| Output load impedance | 150 Ω |
The device operates on a single 5 V supply, with a recommended range of 4.5 to 5.5 V.
It supports High Definition (HD), Progressive Video (PV), and Standard Definition (SD) applications.
No, the internal input DC level shifter allows operation without input or output capacitors when using a single 5 V power supply.