CD4043BCN

The CD4043BCN from Texas Instruments is a quad cross-coupled 3-STATE CMOS NOR R/S latch. Each latch includes a separate Q output and individual SET and RESET inputs, with a common 3-STATE ENABLE input for all four latches. When the ENABLE input is logic '1', the latch states are connected to the Q outputs. A logic '0' disconnects the latch states, resulting in an open circuit condition on the Q output. This 3-STATE feature is beneficial for common bussing of outputs.

Key electrical specifications include a wide supply voltage range from 3V to 15V and low power consumption, typically 100 nW. It also offers high noise immunity, typically 0.45 V_DD. The device supports both NOR and NAND configurations and features a 3-STATE output with a common output enable.

This component is available in various package types including PDIP-16, SOIC-16, and SOP-16, supporting both through-hole and surface mount mounting types. Its applications include multiple bus storage, strobed registers, and providing four bits of independent storage with output enable.

Applications for the CD4043BCN include multiple bus storage, strobed registers, and general digital logic where four bits of independent storage with output enable are required.