CD4043BDR

Latches Overview

The CD4043BDR is a CMOS quad NOR R/S latch with three-state outputs manufactured by Texas Instruments. It belongs to the 4000B series and operates within a supply voltage range of 3V to 18V. The device features four independent latches in a 16-SOIC package, supporting surface-mount installation. Key electrical parameters include a propagation delay of 50ns and output currents of 6.8mA for both high and low states. It functions reliably across an extended temperature range from -55°C to 125°C.

Latches Feature Summary

• Quad configuration providing four independent NOR R/S latches within a single integrated circuit.
• Three-state output capability allowing controlled bus driving and isolation when not active.
• CMOS technology ensuring low static power consumption and compatibility with standard logic levels.

Latches Applications

• Data storage and buffering in digital logic circuits
• Memory address latching systems
• Control signal holding applications

Latches Procurement Notes

Verify the specific suffix 'BDR' indicates the tape-and-reel packaging format and SOIC-16 footprint. Confirm RoHS3 compliance status as per current manufacturer documentation. Ensure the ordering part number matches the required lead time and availability constraints for production schedules.

Latches Selection Notes

Select this component when a quad latch with tri-state outputs is required for space-constrained designs. The wide voltage range supports various system architectures. Consider the 50ns propagation delay against system timing requirements. Verify thermal management needs for operation at the upper end of the specified temperature range.

Latches Part Context

This part is part of the Texas Instruments 4000B series of CMOS logic devices. It serves as a fundamental building block for sequential logic circuits. The device complements other members of the family such as the CD4042 D-type latch. It is designed for general-purpose digital applications requiring reliable data retention.

Latches Replacement Considerations

The CD4044BDR is listed as a parameter-equivalent substitute by the manufacturer. Verify pinout compatibility and functional equivalence before substitution. Other variants in the CD4043 family may offer different packaging options but maintain similar logical functionality.