Datasheet Summary
ELM304 NTSC Video Generator
Description
The ELM304 is a low-cost NTSC video signal generator in an 8 pin package. It requires only a few external ponents in order to generate a stable monochrome raster that is useful in a variety of video applications.
The ELM304 can generate either a solid white raster or a four-level gray scale pattern simply by changing the logic level at the Mode input pin. An internal pullup resistor simplifies the connection of this pin to mechanical switches.
Although originally designed to provide a video input signal for use while recording audio on video cassette recorders, this circuit can also be used for many other instructional and test purposes. The low...