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HD-6408 - CMOS Asynchronous Serial Manchester Adapter (ASMA)

General Description

The HD-6408 is a CMOS/LSI Manchester Encoder/Decoder for creating a very high speed asynchronous serial data bus.

The Encoder converts serial NRZ data (typically from a shift register) to Manchester II encoded data, adding a sync pulse and parity bit.

Key Features

  • Low Bit Error Rate.
  • Data Rate.
  • .1MBit/s.
  • Sync Identification and Lock-In.
  • Clock Recovery.
  • Manchester II Encoder, Decoder.
  • Separate Encode and Decode.
  • Low Operating Power.
  • . . 50mW at 5V.
  • Single Power Supply.
  • 24 Lead Package Ordering Information.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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HD-6408 March 1997 CMOS Asynchronous Serial Manchester Adapter (ASMA) Description The HD-6408 is a CMOS/LSI Manchester Encoder/Decoder for creating a very high speed asynchronous serial data bus. The Encoder converts serial NRZ data (typically from a shift register) to Manchester II encoded data, adding a sync pulse and parity bit. The Decoder recognizes this sync pulse and identifies it as a Command Sync or a Data Sync. The data is then decoded and shifted out in NRZ code (typically into a shift register). Finally, the parity bit is checked. If there were no Manchester or parity errors the Decoder responds with a valid word signal. The Decoder puts the Manchester code to full use to provide clock recovery and excellent noise immunity at these very high speeds.