Features: · Complete teletext decoder including page memory in a single 40-pin DIL package· Single +5 V power supply· Digital data slicer and display clock phase-locked loop reduces peripheral components to a minimum· Both video and scan related synchronization modes are supported· On board single...
SAA5244A: Features: · Complete teletext decoder including page memory in a single 40-pin DIL package· Single +5 V power supply· Digital data slicer and display clock phase-locked loop reduces peripheral compo...
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SYMBOL | PARAMETER | MIN. | MAX. | UNIT |
VDD | digital supply voltage | -0.3 | +6.5 | V |
VI | input voltage (any input) | -0.3 | VDD + 0.5 | V |
VO | output voltage (any output) | -0.3 | VDD + 0.5 | V |
IO | output current (each output) | - | ±10 | mA |
IIOK | DC input or output diode current | - | ±20 | mA |
Tamb | operating ambient temperature range | -20 | 70 | °C |
Tstg | operating ambient temperature | -55 | 125 | °C |
Vesd | electrostatic handling human body model (note 1) |
-2000 | 2000 | V |
Note
1. The human body model ESD simulation is equivalent to discharging a 100 pF capacitor through a 1.5 kW resistor; this produces a single discharge transient. Reference Philips Semiconductors test method UZW-B0/FQ-A302 (compatible with MIL-STD method 3015.7).
The Integrated VIP and Teletext (IVT1.1) SAA5244A is a teletext decoder (contained within a single-chip package) for decoding 625-line based World System Teletext transmissions. The teletext decoder hardware is based on a reduced function version of the device SAA5246 (IVT1.0).
The Video Input Processor (VIP) section of the SAA5244A uses mixed analog and digital designs for the data slicer and the display clock phase-locked loop functions. As a result the number of external components SAA5244A is greatly reduced and no critical or adjustable components are required. A single page static RAM is incorporated in the device thereby giving a genuine single-chip teletext decoder device.