LC7455 Datasheet PDF - Sanyo Semicon Device
| Part Number | LC7455 | |
| Description | Closed Caption Signal Extraction IC | |
| Manufacturers | Sanyo Semicon Device | |
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There is a preview and LC7455 download ( pdf file ) link at the bottom of this page. Total 13 Pages | ||
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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).
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
Package Dimensions
unit: mm
3006B-DIP16
[LC7455A]
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
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LC7455A, 7455M
Table 1 Ceramic Oscillator Guaranteed Constants
Oscillator type
508-kHz ceramic oscillator
Manufacturer
Oscillator element
Murata Mfg. Co., Ltd.
CSB 508E
C1
150 pF
C2
150 pF
Note: Capacitors with K tolerance (±10%) and SL characteristics must be used for C1 and C2.
· Since this circuit is influenced by the length of the circuit pattern, components related to oscillator functioning must be mounted as close together as
possible so that pattern lines do not become longer than is absolutely necessary.
· The characteristics are not guaranteed if an oscillator element other than the one listed above is used.
Figure 1 Ceramic Oscillator
Power supply
Operating VDD lower limit
Figure 2 Oscillator Stabilization Time
<AC timing measurement point>
<Timing>
Note: CPDT goes to the high-impedance state while CE is high.
Figure 3 Serial Output Test Conditions
<Test load>
No. 5680-5/13
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for LC7455 electronic component. |
| Information | Total 13 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ LC7455.PDF Datasheet ] | |
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Featured Datasheets
| Part Number | Description | MFRS |
| LC7455 | The function is Closed Caption Signal Extraction IC. Sanyo Semicon Device | |
| LC7455A | The function is Closed Caption Signal Extraction IC. Sanyo Semicon Device | |
| LC7455M | The function is Closed Caption Signal Extraction IC. Sanyo Semicon Device | |
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