CD4043B types are quad cross-coupled 3-state CMOS NOR latches and the CD4044B 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, resulting in an open circuit condition on the Q outputs. The open circuit feature allows common busing of the outputs.

The CD4043B and CD4044B types are supplied in 16-lead hermetic dual-in-line ceramic packages (F3A suffix), 16-lead dual-in-line plastic packages (E suffix), 16-lead small-outline package (D, DR, DT, DWR, and NSR suffixes), and 16-lead thin shrink small-outline packages (PW and PWR suffixes).

• 3-state outputs with common output ENABLE
• Separate SET and RESET inputs for each latch
• NOR and NAND configurations
• 5-V, 10-V, and 15-V parametric ratings
• Standardized symmetrical output characteristics
• 100% tested for quiescent current at 20 V
• Maximum input current of 1 µA at 18 V over full package temperature range; 100 nA at 18 V and 25°C
• Noise margin (over full package temperature range):
  • 1 V at VDD = 5 V
  • 2 V at VDD = 10 V
  • 2.5 V at VDD = 15 V
• Meets all requirements of JEDEC Tentative Standard No. 13B, "Standard Specifications for Description of 'B' Series CMOS Devices"
• Applications
  • Holding register in multi-register system
  • Four bits of independent storage with output ENABLE
  • Strobed register
  • General digital logic
  • CD4043B for positive logic systems
  • CD4044B for negative logic systems

Data sheet acquired from Harris Semiconductor