HEF4043BT,653

Latches Overview

The HEF4043BT,653 is a CMOS quad R/S latch with three-state outputs manufactured by Nexperia. It operates within a supply voltage range of 3.0 V to 15.0 V and features a common output enable input (OE). The device includes four independent latches, each with set (nS) and reset (nR) inputs and a buffered 3-state output (nQ). When OE is LOW, outputs enter a high-impedance state without affecting the internal latch state. Input clamp diodes allow interfacing with voltages exceeding VDD using current-limiting resistors. The component complies with JEDEC standard JESD 13-B and is specified for operation from -40 °C to +85 °C.

Latches Feature Summary

• Quad R/S latch architecture with individual set and reset inputs per channel
• Three-state outputs controlled by a single common output enable pin
• Input clamp diodes enabling direct interface to voltages above VDD
• High noise immunity and fully static operation characteristics

Latches Applications

• Four-bit storage circuits with output enable functionality

Latches Procurement Notes

Verify the specific ordering suffix matches the required package variant. Confirm RoHS compliance status against the latest manufacturer documentation before integration. Ensure the selected part number aligns with the intended temperature range and packaging requirements for the production environment.

Latches Selection Notes

Select this component for designs requiring multiple independent latches with shared output control. Verify that the system supply voltage remains within the 3.0 V to 15.0 V operating range. Consider the propagation delay specifications relative to the target clock frequency and load capacitance to ensure timing requirements are met.

Latches Part Context

This device belongs to the HEF4000 series of CMOS logic integrated circuits produced by Nexperia. It serves as a fundamental building block for sequential logic applications where data retention and controlled output buffering are necessary. The SO16 package provides a compact solution for surface-mount assembly in various electronic systems.

Latches Replacement Considerations

HEF4043BP