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...
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...
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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.
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.