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SAA5250

Features: ` 7,5 MHz maximum conversion rate` Three prefixes; DIDON, NABTS and U.K. teletext (CEEFAX)` Mode without prefix` Internal calculation of the validation (VAL) and colour burst blanking (CBB) signals, if programmed` Programmable framing code and channel numbers` Error parity calculation or...

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SeekIC No. : 004483930 Detail

SAA5250: Features: ` 7,5 MHz maximum conversion rate` Three prefixes; DIDON, NABTS and U.K. teletext (CEEFAX)` Mode without prefix` Internal calculation of the validation (VAL) and colour burst blanking (CBB...

SAA5250 Data Sheet

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Part Number:
SAA5250
Supply Ability:
5000

Price Break

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

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Upload time: 2025/12/24

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Product Details

Description



Features:

` 7,5 MHz maximum conversion rate
` Three prefixes; DIDON, NABTS and U.K. teletext (CEEFAX)
` Mode without prefix
` Internal calculation of the validation (VAL) and colour burst blanking (CBB) signals, if programmed
` Programmable framing code and channel numbers
` Error parity calculation or not (odd parity)
` Hamming processing of the prefix byte
` Full channel or VBI reception
` Slow/fast mode (detection of page flags or not)
` Maximum/default format up to 63 bytes
` Addressing space of 2 K bytes of the static memory
` Multiplexed address/data information is compatible with Motorola or Intel microcontrollers
` CIDAC is 'MOTEL' compatible


Pinout

Connection Diagram


Specifications

PARAMETER
CONDITIONS
SYMBOL
MIN.
MAX.
UNIT
Supply voltage range

Input voltage range

Total power dissipation

Operating ambient temperature range

Storage temperature range		   VDD

VI

Ptot

Tamb

Tstg		 -0,3

-0,3

-

0

-20		 6,5

VDD+0,3

400

70

+125		 V

V

mW

°C

°C



Description

The SAA5250 is a CMOS Interface for Data Acquisition and Control (CIDAC) designed for use in conjunction with the Video Input Processor (SAA5230) in a multi-standard teletext decoder. The SAA5250 retrieves data from a user selected channel (channel demultiplexer), as well as providing control signals and consecutive addressing space necessary to drive a 2 K bytes buffer memory.

The system operates of SAA5250 in accordance with the following transmission standards:
· French Didon Antiope specification D2 A4-2 (DIDON)
· North American Broadcast Teletext specification (NABTS)
· U.K. teletext (CEEFAX)




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