TSH173 Triple video buffer with filter for SD video Features 4.5V to 5.5V single supply operation R-G-B, Y-Pb-Pr, Y-C-CVBS driving 3 channels with 6dB gain buffer 3 video reconstruction filters for SD 3 internal input DC level shifter No input capacitor is required Pin connections (top view) Very low harmonic distortion Each output can drive AC- or DC-coupled 8.2MHz 150 loads 6dB 8 IN1 1 th OUT1 5 order Tested on 5V power supply 8.2MHz 7 OUT2 IN2 2 th 6dB Data min. and max. are tested during 5 order production 8.2MHz th IN3 3 6dB 6 OUT3 5 order Applications DC Shifter GND +Vcc 4 5 Set top boxes DVD players/recorders SO8 High-end video systems Standard definition TV (SD) Multimedia products Description This datasheet gives technical information on The TSH173 is a single supply triple video buffer using the TSH173 as a R-G-B, Y-Pb-Pr, or Y-C- featuring an internal gain of 6dB and an internal CVBS driver for video DAC outputs on a video line. low pass filter of 8.2MHz cut-off frequency for each channel to fit with Standard Definition The TSH173 is available in SO8 plastic package. requirements for video line interfaces. Another advantage of the TSH173 is its input DC level shifter to drive the video signal on a 75 video line without any damage to the synchronization tip, while using a single 5V power supply with no input capacitor. The DC level shifter is internally fixed and optimized to keep the output video signal between low and high output rails in the best position to improve linearity. March 2007 Rev 1 1/13 www.st.com 13Contents TSH173 Contents 1 Absolute maximum ratings . 3 2 Operating conditions 3 3 Electrical characteristics . 4 3.1 Synchronization tip . 8 3.2 Power supply considerations . 9 4 Using the TSH173 to drive video components . 10 5 Package mechanical data 11 6 Ordering information . 12 7 Revision history . 12 2/13