CD4028BMS types are BCD-to-decimal or binary-to-octal decoders consisting of buffering on all 4 inputs, decoding logic gates, and 10 output buffers. A BCD code applied to the four inputs, A to D, results in a high level at the selected one of 10 decimal decoded outputs. Similarly, a 3-bit binary code applied to inputs A through C is decoded in octal code at output 0 to 7 if D = 0. High drive capability is provided at all outputs to enhance dc and dynamic performance in high fan-out applications. The CD4028BMS is supplied in these 16-lead outline packages: Braze Seal DIP H4S Frit Seal DIP H1E Ceramic Flatpack H3X


  • High Voltage Type (20V Rating)
  • BCD-to-Decimal Decoding or Binary-to-Octal Decoding
  • High Decoded Output Drive Capability
  • "Positive Logic" Inputs and Outputs - Decoded Outputs Go High On Selection
  • Medium-Speed Operation tPHL, tPLH = 80ns (typ) at VDD = 10V
  • Standardized Symmetrical Output Characteristics
  • 100% Tested For Quiescent Current at 20V
  • Maximum Input Current of 1µA at 18V Over Full Package-Temperature Range; 100nA at 18V and +25°C
  • Noise Margin (Over Full Package Temperature Range): 1V at VDD = 5V 2V at VDD = 10V 2.5V at VDD = 15V
  • 5V, 10V and 15V Parametric Ratings
  • Meets All Requirements of JEDEC Tentative Standard No. 13B, "Standard Specifications for Description of 'B' Series CMOS Devices"


  • Code Conversion
  • Indication-Tube Decoder
  • Address Decoding - Memory Selection Control

Product Options

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Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
CD4028BMS Datasheet Datasheet PDF 408 KB
Application Notes & White Papers
AN9867: End of Life Derating: A Necessity or Overkill Application Note PDF 338 KB
PCN10123 - Alternate Die Attach Material for Assembly of Intersil Hermetic Packaged Products - Intersil Palm Bay, FL. (ISP) Product Change Notice PDF 230 KB
Intersil Space Products Brochure Brochure PDF 3.14 MB
Intersil Commercial Lab Services Brochure PDF 364 KB