MC44140

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. Part of SYSTEM 4 Concept Works with Baseband Color Difference Signals PAL (4.43 MHz)/SECAM/NTSC Capability Uses 17.734475 MHz Clock with PAL/SECAM Signals 8–Bit Sampling at 1/6 Clock Frequency External Inputs (Satellite ....) Minimum Number of External Components Low Current (35 mA), + 5 V Supply MC44140 16 1 P SUFFIX PLASTIC PACKAGE CASE 648–08 16 1 DW SUFFIX PLASTIC PACKAGE CASE 751G–02 ORDERING INFORMATION MC44140P MC44140DW Plastic DIP SO–L PIN ASSIGNMENT CK VDD VSS SC SS IN1B OUT1 EXT1 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 BIAS IN1A IN2A VDD VSS IN2B OUT2 EXT2 © Motorola, Inc. 1995 MOTOROLA REV 10 2/95 MC44140 2–1 BLOCK DIAGRAM ANALOG VDD ANALOG VSS DIGITAL VDD DIGITAL VSS EXT R–Y EXT B–Y BIAS 2 3 16 13 12 8 9 – CLOCK 1 + BLACK LEVEL VOLTAGE CL4 CL4 CLOCK GENERATOR BIAS SOURCE SAND– 4 CASTLE SYSTEM SELECT 5 SANDCASTLE AND SYSTEM SELECTION DECODER EXT CL1 CL3 SECAM SR A/D CL2 CL4 1 2 CLOCKS CONTROL PAL NTSC R–Y IN 6 CL1 CL3 BLACK LEVEL CURRENT CL1 ...