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SAA5246A

Features: · Complete Teletext decoder in a 48-pin DIL or 64-pin QFP, integrated circuit· Single +5 V power supply· Both video and scan related synchronization modes are supported· RGB interface to standard colour decoder ICs, push-pull output drive· Digital data slicer and display clock phase-lock...

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SeekIC No. : 004483928 Detail

SAA5246A: Features: · Complete Teletext decoder in a 48-pin DIL or 64-pin QFP, integrated circuit· Single +5 V power supply· Both video and scan related synchronization modes are supported· RGB interface to s...

SAA5246A Data Sheet

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Part Number:
SAA5246A
Supply Ability:
5000

Price Break

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

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Product Details

Description



Features:

· Complete Teletext decoder in a 48-pin DIL or 64-pin QFP, integrated circuit
· Single +5 V power supply
· Both video and scan related synchronization modes are supported
· RGB interface to standard colour decoder ICs, push-pull output drive
· Digital data slicer and display clock phase-locked loop reduce peripheral components to a minimum
· Data capture performance similar to SAA5231 (VIP2)
· Option for up to seven national languages
· Optional storage of packet 24 in the display memory
· Separate text and video signal quality detectors, 625/525 video status and language version all readable via I2C-bus
· Automatic ODD/EVEN output control with override
· Control of display PLL free-run and rolling header via I2C-bus
· VCS to SCS mode for stable 525 line status display.


Pinout

Connection Diagram


Specifications

SYMBOL PARAMETER MIN. MAX. UNIT
VDD

VI

VO

IO

IIOK

Tamb

Tstg

Vstat		 supply voltage (all supplies)

input voltage (any input)

output voltage (any output)

output current (each output)

DC input or output diode current

operating ambient temperature

storage temperature

electrostatic handling (see note 1)		 -0.3

-0.3

-0.3

-

-

-20

-55

-2000		 6.5

VDD +0.5

VDD +0.5

±10

±20

+70

+125

+2000		 V

V

V

mA

mA

°C

°C

V

Note to the Limiting values
1. Electrostatic handling is equivalent to discharging a 100 pF capacitor through a 1.5 k series resistor with a 15 ns rise time.




Description

The SAA5246A is a single-chip teletext decoder IC for decoding 625 line base World System Teletext transmissions. The teletext decoder hardware is based on the Enhanced Computer Controlled ECCT device (SAA5243) with some additional features.

The Video Input Processor section of the SAA5246A uses mixed analog and digital designs in the data slicer and clock phase-locked-loop functions. As a result the number of external components are greatly reduced and no critical or adjustable components are required.




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