This datasheet introduces the Philips SAA5249 chip's features, including support for the widest possible language decoding, 100% hardware compatibility with Philips SAA5247 and SAA5244A chips, and the same pin arrangement as other Philips teletext decoder family members, providing a single hardware solution for the entire product range.
This document is a preliminary datasheet for the Philips SAA5249, an integrated VIP and Teletext decoder with a background memory controller. The device is designed for decoding 625-line based World System Teletext transmissions and can store up to 512 teletext pages in an external DRAM for instant access.
Key features include automatic processing of extension packet 26 for wider language decoding options and 100% hardware and software compatibility with the SAA5247 and SAA5254 models. The chip is available in a 48-pin DIP package or a 64-pin QFP package.
| Supply Voltage | 4.5 to 5.5 V |
|---|---|
| Supply Current | 90 to 120 mA |
| Crystal Frequency | 27 MHz |
| Operating Temperature | -20 to +70 °C |
| Package Type | DIP48 or QFP64 |
The device can store up to 512 teletext pages in an external DRAM.
Yes, it is 100% hardware and software compatible with the SAA5247.
Yes, it contains extra hardware to process extension packet 26 automatically.