The CD4028BMS types are BCD-to-decimal or binary-to-octal decoders consisting of buffering on all four 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 and 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


Type Title Date
Datasheet PDF 408 KB
Brochure PDF 5.02 MB
Brochure PDF 467 KB
Price Increase Notice PDF 360 KB
White Paper PDF 533 KB
Product Advisory PDF 499 KB
Product Change Notice PDF 230 KB
Application Note PDF 338 KB
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Design & Development