TSH343 Datasheet, PDF (1/14 Pages) STMicroelectronics – 280MHz Single - Supply Triple Video Buffer

TSH343
280MHz Single-Supply Triple Video Buffer
■ Bandwidth: 280MHz
■ 5V single-supply operation
■ Internal input DC level shifter
■ No input capacitor required
■ Internal gain of 6dB for a matching between 3
channels
■ Very low harmonic distortion
■ Slew rate: 780V/µs
■ Specified for 150Ω and 100Ω loads
■ Tested on 5V power supply
■ Data min. and max. are tested during
production
Description
The TSH343 is a triple single-supply video buffer
featuring an internal gain of 6dB and a large
bandwidth of 280MHz.
The main advantage of this circuit is that its input
DC level shifter allows for video signals on 75Ω
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. Chapter 4 of this datasheet
gives technical support when using the TSH343
as Y-Pb-Pr driver for video DAC output on a video
line (see TSH344 for RGB signals).
The TSH343 is available in the compact SO8
plastic package for optimum space-saving.
Order Codes
Pin Connections (top view)
Pin1 identification
Top View
IN1 1
6dB
IN2 2
6dB
IN3 ₃
6dB
DC Shifter
+Vcc 4
SO8
8 OUT1
7 OUT2
6 OUT3
5 GND
Applications
■ High-end video systems
■ High Definition TV (HDTV)
■ Broadcast and graphic video
■ Multimedia products
Part Number
TSH343ID
TSH343IDT
Temperature Range
-40°C to +85°C
Package
SO-8
Packing
Tube
Tape & Reel
Marking
TSH343I
TSH343I
January 2006
Rev. 2
1/14
www.st.com
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