General Description

The EL4581C extracts timing information from standard negative going video sync found in NTSC, PAL, and SECAM broadcast systems. It can also be used in non standard formats and with computer graphics systems at higher scan rates, by adjusting a single external resistor. When the input does not have correct serration pulses in the vertical interval, a default vertical output is produced.

Features

● NTSC, PAL and SECAM sync separation

● Single supply, a5V

● Precision 50 slicing, internal caps

● Built-in color burst filter

● Decodes non-standard verticals

● Pin compatible with LM1881

● Low power

● Typically 1.5 mA supply current

● Resistor programmable scan rate

● Few external components

● Available in 8-pin DIP and SO-8 pkg.

Applications

● Video special effects

● Video test equipment

● Video distribution

● Displays

● Imaging

● Video data capture

● Video triggers