MC44140 Datasheet (Motorola) - Chroma Delay Line

MC44140, Chroma Delay Line

Pin 2 3 1 5 4 Symbol VDD VSS CK SS SC Positive supply voltage.

Supply ground.

System clock.

Supplied from MC440XX master clock.

Either 17.734475 MHz (PAL and SECAM) or 14.31818 MHz (NTSC) sine wave.

System selection.

4 *level signal supplied by MC440XX to indicate whether color difference si

www.DataSheet4U.com MOTOROLA SEMICONDUCTOR TECHNICAL DATA Order this document by MC44140/D Chroma Delay Line HCMOS Technology The MC44140 is a monolithic 64 µ s delay line, intended for color TV applications.

It may be used as a baseband chroma correction circuit (with PAL), or as a chroma delay line (with SECAM).

The device has been designed for use with the MC44000 as part of CHROMA 4, or with the MC44011, but may also be used as a general purpose delay line for other applications.

MC44140 Features

* by CL1 at pin 15. The direct path signal is clamped by the other CL1 switch to the dc level of the delayed path (including any offsets) to ensure there is no difference in clamping level between the two paths. During the period “SECAM 1”, the B

* Y signal is present and this is clamped to the