SN74HCT574PWG4

Flip Flops Overview

The SN74HCT574PWG4 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 TTL-compatible inputs. The device provides non-inverting outputs capable of driving bus lines or up to fifteen LSTTL loads, with output currents specified at ±6 mA. Key electrical parameters include a maximum propagation delay of 22 ns and a low quiescent current of 80 µA. It is housed in a 20-TSSOP package.

Flip Flops Feature Summary

• Octal configuration providing eight independent D-type flip-flops for parallel data storage
• Three-state outputs designed specifically for efficient bus-driven architectures
• TTL voltage compatible inputs ensuring interoperability with standard logic families
• Low power consumption characteristics suitable for energy-efficient system designs

Flip Flops Applications

• Buffer register implementations requiring high-density data latching
• I/O port expansion circuits for microcontroller interfaces
• Bidirectional bus driver applications managing signal directionality
• Working registers in digital processing systems

Flip Flops Procurement Notes

Verify the complete part number including the G4 suffix to confirm RoHS compliance and green manufacturing status. Ensure the TSSOP-20 package variant matches your PCB footprint requirements. Cross-reference the specific datasheet revision to confirm pinout consistency with existing designs. Confirm that the operating temperature range meets your environmental specifications before finalizing procurement orders.

Flip Flops Selection Notes

Select this component when TTL input compatibility is required alongside CMOS performance levels. The SN74HCT574PWG4 is appropriate for systems needing robust bus driving capabilities with moderate speed requirements. Consider the 20-TSSOP package constraints regarding thermal dissipation and board space. Evaluate the 4.5 V to 5.5 V supply voltage window against your system power rails to ensure reliable operation under all load conditions.

Flip Flops Part Context

This device belongs to the Texas Instruments 74HCT logic family, which bridges HC CMOS performance with TTL input compatibility. The SN74HCT574 series is widely used in industrial and consumer electronics for data storage and transfer. The G4 suffix indicates a lead-free, halogen-free version compliant with international environmental standards, distinguishing it from older standard variants.

Flip Flops Replacement Considerations

SN74HCT574PWR serves as a direct functional equivalent without the environmental suffix. SN74AHCT574PWR offers faster switching speeds but maintains similar pinouts. SN74HC574 variants provide broader voltage ranges but lack TTL input compatibility. Verify package dimensions and electrical tolerances when substituting any alternative part numbers.