CD4043BMS types are quad cross-coupled 3-state CMOS NOR latches and the CD4044BMS types are quad cross-coupled 3- state CMOS NAND latches. Each latch has a separate Q output and individual SET and RESET inputs. The Q outputs are controlled by a common ENABLE input. A logic 1 or high on the ENABLE input connects the latch states to the Q outputs. A logic 0 or low on the ENABLE input disconnects the latch states from the Q outputs, results in an open circuit feature allows common busing of the outputs. The CD4043BMS and CD4044BMS are supplied in these 16- lead outline packages: Braze Seal DIP *H4T †H4T Frit Seal DIP *H1C †HIE Ceramic Flatpack *H3X †H6W *CD4043B Only †CD4044B Only


  • High Voltage Types (20V Rating)
  • Quad NOR R/S Latch- CD4043BMS
  • Quad NAND R/S Latch - CD4044BMS
  • 3 State Outputs with Common Output ENABLE
  • Separate SET and RESET Inputs for Each Latch
  • NOR and NAND Configuration
  • 5V, 10V and 15V Parametric Ratings
  • 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
  • Meets All Requirements of JEDEC Tentative Standard No. 13B, "Standard Specifications for Description of 'B' Series CMOS Devices"


  • Holding Register in Multi-Register System
  • Four Bits of Independent Storage with Output ENABLE
  • Strobed Register
  • General Digital Logic
  • CD4043BMS for Positive Logic Systems
  • CD4044BMS for Negative Logic Systems

Product Options

Orderable Part ID Part Status Pkg. Type Carrier Type Buy Sample
Active SBDIP Tube
Active CFP Tray

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
CD4043BMS, CD4044BMS Datasheet Datasheet PDF 387 KB
Application Notes & White Papers
Wafer by Wafer Low Dose Rate Acceptance White Paper White Paper PDF 533 KB
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
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