SN74HCT574PW

Flip Flops Overview

The SN74HCT574PW is an octal edge-triggered D-type flip-flop with three-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and features a TSSOP-20 surface-mount package. The device provides non-inverting logic with a typical propagation delay of 22 ns at 5 V. Output drive capabilities include ±6 mA current levels, supporting direct bus driving or loading up to 15 LSTTL loads. Static current consumption is typically low, ensuring efficient power management in digital circuit applications.

Flip Flops Feature Summary

• Octal configuration providing eight independent D-type flip-flops in a single integrated circuit
• Three-state output architecture designed for efficient bus-driven system topologies
• TTL-compatible input voltage thresholds enabling seamless integration with standard logic families
• Non-inverting signal polarity maintaining logical consistency across the data path

Flip Flops Applications

• Buffer register implementations for temporary data storage and transfer
• General-purpose I/O port expansion in embedded systems
• Bidirectional bus driver circuits requiring controlled signal directionality
• Working registers within complex digital processing architectures

Flip Flops Procurement Notes

Verify that the ordering suffix 'PW' specifically denotes the TSSOP-20 package variant when sourcing replacements. Confirm RoHS compliance status through official manufacturer documentation prior to procurement. Ensure the component matches the required operating temperature range for the intended application environment. Cross-reference the datasheet revision history to validate electrical parameter consistency against existing design specifications.

Flip Flops Selection Notes

Select this component when TTL-level compatibility is required alongside high-speed octal buffering capabilities. The HCT series ensures reliable interfacing with legacy TTL logic while offering improved noise immunity compared to standard LS variants. Consider the TSSOP-20 footprint constraints during PCB layout planning. Evaluate the specific propagation delay requirements against the 22 ns typical performance metric to ensure timing margins are sufficient for the target clock frequencies.

Flip Flops Part Context

This device belongs to the SN74HCT574 family of octal D-type flip-flops. It shares functional similarities with other Texas Instruments logic components but is distinct due to its specific HCT input characteristics and three-state output configuration. The PW suffix identifies the plastic small-outline package type, differentiating it from DIP or SOIC variants within the same logical family.

Flip Flops Replacement Considerations

• SN74HCT574PWR
• SN74HCT574N
• SN74HCT574NSR

Flip Flops FAQ

What is the maximum static current consumption for this device?

The maximum ICC is specified as 80 µA, indicating low power consumption during standby states.

Can this component directly drive LSTTL loads?

Yes, the large current three-state non-inverting outputs can directly drive bus lines or up to 15 LSTTL loads.