The HD-6409/883 Manchester Encoder-Decoder (MED) is a High-Speed, low power device manufactured using selfaligned silicon gate technology. The device is intended for use in serial data communication, and can be operated in either of two modes. In the converter mode, the MED converts Nonreturn-to-Zero code (NRZ) into Manchester code and decodes Manchester code into Nonreturn-to-Zero code. For serial data communication, Manchester code does not have some of the deficiencies inherent in Nonreturn-to-Zero code. For instance, use of the MED on a serial line eliminates DC components, provides clock recovery, and gives a relatively high degree of noise immunity. Because the MED converts the most commonly used code (NRZ) to Manchester code, the advantages of using Manchester code are easily realized in a serial data link. In the Repeater mode, the MED accepts Manchester code input and reconstructs it with a recovered clock. This minimizes the effects of noise on a serial data link. A digital phase lock loop generates the recovered clock. A maximum data rate of 1MHz requires only 50mW of power. Manchester code is used in magnetic tape recording and in fiber optic communication, and generally is used where data accuracy is imperative. Because it frames blocks of data, the HD-6409/883 easily interfaces to protocol controllers.


  • This Circuit is Processed in Accordance to MIL-STD- 883 and is Fully Conformant Under the Provisions of Paragraph 1.2.1.
  • Converter or Repeater Mode
  • Independent Manchester Encoder and Decoder Operation
  • Static to One Megabit/Sec Data Rate Guaranteed
  • Low Bit Error Rate
  • Digital PLL Clock Recovery
  • On Chip Oscillator
  • Low Operating Power: 50mW Typical at +5V
  • Available in 20 Lead Dual-In-Line and 20 Pad LCC Package

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active CERDIP Tube 19
Active CERDIP Tube 19

Documentation & Downloads

Title language Type Format File Size Date
Datasheets & Errata
HD-6409 Datasheet Datasheet PDF 318 KB
HD-6409/883 Datasheet Datasheet PDF 270 KB
Application Notes & White Papers
AN9867: End of Life Derating: A Necessity or Overkill Application Note PDF 338 KB
AN9654: Use of Life Tested Parts Application Note PDF 224 KB
PCN15064 - Qualification of Alternate Assembly Site for CERDIP (MMT) Product Change Notice PDF 323 KB
PCN14017 - Test Site Change for the Listed Intersil Products - Carsem (CAS) Ipoh, Malaysia Product Change Notice PDF 174 KB
PCN11040 - Manufacturing Site Change for Assembly of Intersil Ceramic Dual-In-Line (Frit Seal Cerdip) Products - Amkor (ATP) Muntinlupa City, Philippines Product Change Notice PDF 151 KB
Intersil Space Products Brochure Brochure PDF 3.14 MB
PA14064 - Minimum Line Quantity Change Product Advisory PDF 282 KB
TB463: Going Beyond the HD-6409 Data Shee Other PDF 366 KB