LC7458B-04 查看數據表（PDF） - SANYO -> Panasonic

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LC7458B-04

Closed-Caption Decoder IC

SANYO -> Panasonic 

LC7458B-04

Current Drain Characteristics at Ta=–30 to +70˚C, VSS=0V

Parameter

Symbol

Conditions

Normal operating current drain1

IDDOP1

VDD ; FmCF=12MHz ceramic oscillator,

FmLC=12MHz LC oscillator, system clock : main

clock, VDD=4.5 to 5.5V

1. The current drain does not include the output transistor and pull-up MOS transistor current.

Table1. Ceramic oscillator guaranteed constants (main clock)

Oscillator type

Manufacturer Oscillator element

C11

CSA12.0MTZ

33pF

12MHz ceramic oscillator

Murata

CSA12.0MT

CST12.0MT

33pF

Kyocera

KBR-12.0M

33pF

1. C1 and C2 should be ±10% K tolerance types with SL characteristics.

Built-in

C12

33pF

33pF

33pF

Ratings

Unit

min

typ max

15

25 mA

Table2. LC oscillator recommended constants (OSD clock)

Oscillator type

12MHz LC

oscillator

L

12µH

C3

18pF

C4

18pF

Note that the parts making up the oscillator should be mounted as close as possible with circuit patterns as short as possible

to reduce the effects of the circuit pattern.

The oscillator characteristics above are not guaranteed for oscillator elements other than those listed.

Figure 1. Main clock (ceramic oscillator)

Figure 2. OSD clock (LC oscillator)

Figure 3. Oscillator stabilization time

No.4978–5/11

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