TSH343IDT STMicroelectronics

TSH343 280MHz single-supply triple video buffer Features Bandwidth: 280MHz 5V single-supply operation Internal input DC level shifter No input capacitor required 6dB internal gain for a matching between 3 channels Pin1 identification Top View Very low harmonic distortion Slew rate: 780V/s 1 6dB 8 OUT1 IN1 Specified for 150 and 100 loads Min. and max. data tested during production 7 OUT2 IN2 2 6dB Applications IN3 High-end video systems 3 6dB 6 OUT3 High definition TV (HDTV) DC Shifter 5 +Vcc 4 GND Broadcast and graphic video Multimedia products SO8 Description The TSH343 is a triple single-supply video buffer The TSH343 is available in the compact SO8 featuring an internal gain of 6dB and a large plastic package for optimum space-saving. 280MHz bandwidth. The main advantage of this circuit is that its input DC level shifter allows for video signals on 75 video lines without damage to the synchronization tip of the video signal, 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 signals between low and high output rails in the best position for the greatest linearity. This datasheet provides information on using the TSH343 as a Y-Pb-Pr driver for video DAC output on a video line. See the TSH344 datasheet for R- G-B signals. March 2007 Rev 4 1/17 www.st.com 17TSH343 Contents 1 Absolute maximum ratings and operating conditions . 3 2 Electrical characteristics . 4 3 Application information . 10 3.1 Using the TSH343 to drive Y-Pb-Pr video components 10 3.2 PSRR and improvement of power supply noise rejection 12 3.3 Delay between channels . 13 4 Package mechanical data 14 5 Ordering information . 16 6 Revision history . 16 2/17