Features

n Wide supply voltage range: 3V to 15V

n Low power: 100 nW (typ.)

n High noise immunity: 0.45 VDD (typ.)

n Separate SET and RESET inputs for each latch

n NOR and NAND configuration

n 3-STATE output with common output enable

Applications

Multiple bus storage

Strobed register

Four bits of independent storage with output enable

General digital logic

General Description

The CD4043BC are quad cross-couple 3-STATE CMOS

NOR latches, and the CD4044BC are quad cross-couple 3-

STATE CMOS NAND latches. Each latch has a separate Q

output and individual SET and RESET inputs. There is a

common 3-STATE ENABLE input for all four latches. A

logic “1” on the ENABLE input connects the latch states to

the Q outputs. A logic “0” on the ENABLE input disconnects

the latch states from the Q outputs resulting in an

open circuit condition on the Q output. The 3-STATE feature

allows common bussing of the outputs.