Sanyo LC7456A Specifications

Ordering number : ENN*6733

LC7456A

CMOS IC

LC7456A

U.S. Closed Caption Signal Extraction IC

Preliminary

Overview

The LC7456A receives the composite video signal from the V / C (Video Chroma) signal processor and extracts the closed caption data. This data and a clock signal, generated by an on-chip PLL, are then sent to the decoder IC. The LC7456A is a CMOS version of the LA7945 IC also currently in production. The differences between the LA7945 and the LC7456A are a change from Bipolar to CMOS technology, a smaller package size (22 pins to 16 pins), and a reduction in the external circuitry requierd.

An LC8640XX series microcontroller is needed to perform the decoding after the LC7456A has extracted the caption data from the composite video signal.

Features

•Low power consumption due to CMOS process

•Accurate caption signal extraction using a built-in pead hold circuit and digital technology.

•Power Requirement : 5V ± 10 %

•Package : DIP16

Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft's control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications.

SANYO assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO products described or contained herein.

SANYO Electric Co.,Ltd. Semiconductor Company

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

Ver. 1.02B	D2000 RM (IM) O No.6733-1/6
21594

Pin Arrangement Diagram (DIP16)

1	VSS1			CP 16
2	TEST1			VSS2 15
3	LN21			VDD2 14
4	CPDT			TEST2 13
5	CPCK			VCOR 12
6				CVIN 11
	O / E
7				PEAK 10
	HSYNC
8	VDD1			SLICE 9
				ILC00006

LC7456A

Package Dimensions unit : mm

3006B

16

9

7.62

6.4

0.25

1

8

19.2

3.0	3.65max
	3.4

0.71

2.54

0.48

1.2

SANYO : DIP16(300mil)

Pin Function

	Pin							Function
No.		Name
1		VSS1					GND
2		TEST1				Test pin, usually open
3		LN21				Line 21H pulse output
4		CPDT					Caption data output
5		CPCK					Caption data latch clock output
6							Field determination output
		O/E
7								input
		HSYNC					HSYNC
8		VDD1					Power supply
9		SILCE					Caption data slice level output
10		PEAK					Caption data peak hold level output
11		CVIN				Composite video input
12		VCOR				Built-in VCO frequency control pin
13		TEST2				Test pin, usually open
14		VDD2					Power supply
15		VSS2					GND
16		CP				Built-in PLL filter pin

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