SN74HCT574NE4

Flip Flops Overview

The SN74HCT574NE4 is an octal edge-triggered D-type flip-flop manufactured by Texas Instruments. It features non-inverting outputs with three-state control, designed for bus-oriented applications. The device operates within a voltage range of 4.5 V to 5.5 V and supports through-hole mounting in a 20-pin PDIP package. Key electrical characteristics include a maximum propagation delay of 47 ns at 5.5 V with 150 pF load capacitance, and a typical delay of 22 ns. Output drive capability is specified at ±6 mA at 5 V, while static current consumption remains low at a maximum of 80 µA.

Flip Flops Feature Summary

• Octal edge-triggered D-type flip-flops with three-state outputs
• TTL-compatible input logic levels
• High-impedance states effectively isolate outputs from the bus

Flip Flops Applications

• Buffer registers
• I/O ports
• Bidirectional bus drivers
• Working registers

Flip Flops Procurement Notes

Verify that the component matches the specific HCT logic family requirements, as it differs from HC or AHC variants regarding input voltage thresholds. Confirm the presence of the 'E4' suffix indicates lead-free packaging compliant with RoHS standards. Ensure the procurement source provides official datasheets confirming the 20-pin PDIP physical dimensions and pinout configuration to prevent integration errors during PCB assembly.

Flip Flops Selection Notes

Select this component when TTL voltage compatibility is required alongside high-speed performance. The HCT series ensures direct interfacing with standard TTL circuits without level shifting. Consider the 20-pin DIP package for prototyping or through-hole manufacturing processes. Evaluate the 4.5 V to 5.5 V operating range against system power supply stability to ensure reliable operation under all expected conditions.

Flip Flops Part Context

This part belongs to the SN74HCT574 family of octal D-type flip-flops. The 'NE4' designation specifies the PDIP-20 through-hole package variant with lead-free construction. It serves as a digital storage element within the broader 74-series logic ecosystem, providing eight independent bits of storage with tri-state output control for efficient bus management in digital systems.

Flip Flops Replacement Considerations

• SN74HCT574N
• SN74HCT574PW

Flip Flops FAQ

What is the maximum propagation delay for the SN74HCT574NE4?

The maximum propagation delay is 47 ns at 5.5 V with a 150 pF load capacitance.

Does the SN74HCT574NE4 support TTL input voltages?

Yes, the inputs are compatible with TTL voltage levels.