LC7455M

Ordering number : EN5680 CMOS IC LC7455A, 7455M Closed Caption Signal Extraction IC Overview The LC7455A/M extracts the closed caption signal superimposed on a video signal during the vertical return period and, under the control of a clock signal provided by the decoder IC, transfers that signal to the IC (usually a microcontroller) that decodes the closed caption data. The LC7455A/M supports four operating modes. Modes 1 and 2 can be used for XDS. In these modes, the LC7455A/M, in combination with the decoder IC (microcontroller), extracts the caption signal superimposed on field 2 and uses it for NTSC VCR functions such as the automatic time and date setting function. In modes 3 and 4, the LC7455A/M, in combination with the decoder IC (microcontroller), extracts the caption signal superimposed on fields 1 and 2 and uses it for NTSC TV applications (mode 3) or PAL TV applications (mode 4). Package Dimensions unit: mm 3006B-DIP16 [LC7455A] Functions Low power dissipation achieved by fabrication in a CMOS process. Stable caption signal extraction achieved by a built-in peak hold circuit and the use of digital technology. Operating supply voltage: 5 V ±10% Package LC7455A: 16-pin DIP LC7455M: 18-pin MFP unit: mm 3095-MFP18 [LC7455M] SANYO: DIP16 SANYO: MFP18 SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN D3097HA(OT) No. 5680-1/13 LC7455A, 7455M Pin Assignments Top view Pi...