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LC7455A

Features: • Low power dissipation achieved by fabrication in a CMOS process.• Stable caption signal extraction achieved by a built-inpeak hold circuit and the use of digital technology.• Operating supply voltage: 5 V ±10%• Package LC7455A: 16-pin DIPLC7455M: 18-pin MFPPinou...

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SeekIC No. : 004391955 Detail

LC7455A: Features: • Low power dissipation achieved by fabrication in a CMOS process.• Stable caption signal extraction achieved by a built-inpeak hold circuit and the use of digital technology.&...

LC7455A Data Sheet

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Part Number:
LC7455A
Supply Ability:
5000

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

• 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


Pinout

Connection Diagram


Specifications

Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
VDD max
VDD1, VDD2: VDD1 = VDD2
0.3 to +7.0
V
Input voltage
VI
 HS/CFIN, CVIN, SCKIN, CE
0.3 to VDD +0.3
V
Output voltage
VO
LN21, CPDT, O/E/CFOUT, HS/CFIN
0.3 to VDD +0.3
V
Allowable power dissipation
Pd max
 LC7455A
300
mW
LC7455M
150
Operating temperature
Topr
  
-30to+70
°C
Storage temperature
Tstg
  
-55to+150
°C
Note: VSS1 and VSS2 must be at the same potential.
          VDD1 and VDD2 must be at the same potential.


Description

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).




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