The SAA5254 Integrated VIP and teletext decoder is a complete teletext decoder that includes page memory and FASTEXT links. It automatically processes extension packet 26 to provide the widest possible language decoding. It is 100% hardware compatible with the SAA5244A, making it a plug-in replacement and extra market option. The device is also compatible with other members of the Philips teletext decoder family, such as SAA5280 and SAA5249, providing a single hardware solution for the full range. It has low software overhead, a single page acquisition system, an RGB interface to standard colour decoder ICs, and separate text and video signal quality detectors.
This document is a preliminary specification datasheet for the Philips SAA5254, an integrated VIP and teletext decoder designed for 625-line based World System Teletext transmissions. The device is pin-aligned with the SAA5244A and includes hardware for automatic processing of extension packet 26.
| Package | 40-pin DIP (SOT129-1) |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V |
| Supply Current | 90 mA to 120 mA |
| Crystal Frequency | 27 MHz |
| Operating Temperature | -20 °C to +70 °C |
| Compatibility | 100% hardware compatible with SAA5244A |
It is 100% hardware compatible with the SAA5244A.
It uses a 40-pin DIP plastic dual in-line package.
Yes, it contains extra hardware to process extension packet 26 characters automatically.