HEF4044BT,652

Latches Overview

The HEF4044BT,652 is a quad R/S latch with 3-state outputs manufactured by NXP Semiconductors. It operates within a recommended VDD power supply range of 3 V to 15 V referenced to VSS (ground). The device features active LOW set inputs (1S to 4S), active LOW reset inputs (1R to 14R), and active HIGH 3-state outputs (1Q to 4Q). A common output enable input (OE) controls the high impedance OFF-state. Propagation delays vary by voltage: at 5 V, tPHL/tPLH are 90 ns max; at 10 V, they are 80 ns max; at 15 V, they are 60 ns max. Transition times range from 60 ns to 120 ns depending on load capacitance.

Latches Feature Summary

• Fully static operation for reliable data retention without clocking requirements
• Common output enable input allows high impedance OFF-state for bus sharing
• Standardized symmetrical output characteristics across operating conditions
• Compliance with JEDEC standard JESD 13-B for robustness

Latches Applications

• Four-bit storage applications requiring output enable control
• Digital logic circuits utilizing latch functionality
• Systems requiring bus-oriented data transfer via 3-state outputs

Latches Procurement Notes

Verify the specific package variant against project requirements, as the HEF4044B family includes both DIP16 and SO16 options. Confirm that the selected component matches the required lead pitch and body dimensions. Ensure compatibility with existing PCB footprints before finalizing procurement orders.

Latches Selection Notes

Select this component when designing circuits requiring independent latching with shared bus capabilities. Consider the 3 V to 15 V operating range for flexibility in supply voltage selection. Evaluate propagation delay specifications relative to system timing constraints to ensure signal integrity is maintained during state transitions.

Latches Part Context

The HEF4044B belongs to the 4000 series of CMOS logic integrated circuits produced by NXP Semiconductors. This series is characterized by wide supply voltage ranges and low power consumption. The HEF4044BT,652 specifically denotes the small outline package variant within this functional family.

Latches Replacement Considerations

HEF4044BP serves as an alternative package option within the same logical family.