CD74ACT273PWR

Overview

The CD74ACT273PWR is an octal D-type flip-flop from the Texas Instruments ACT logic series, housed in a 20-pin TSSOP package. It features eight independent positive-edge-triggered circuits with a master reset function. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports a maximum clock frequency of 189 MHz. Propagation delay is specified at 13.5 ns under standard test conditions. Output drive capability reaches 24 mA for both high and low states, ensuring robust signal integrity in digital systems.

Feature Summary

• Octal architecture providing eight independent D-type flip-flops in a single integrated circuit
• Positive-edge triggering mechanism synchronized by a single clock input line
• Master reset functionality that asynchronously clears all outputs to a low state
• High-speed CMOS construction compatible with TTL input levels

Applications

• Parallel-to-serial data conversion interfaces
• Register file storage elements in microprocessor systems
• State machine implementation in digital control logic
• Buffering and latching operations in communication protocols

Procurement Notes

Verify the specific suffix 'PWR' corresponds to the TSSOP-20 surface-mount package variant when sourcing. Confirm that the ACT series designation aligns with the required 4.5V to 5.5V operating voltage window for your target application. Ensure compatibility with existing PCB footprints designed for this specific 20-lead thin-shrink small-outline form factor.

Selection Notes

Select this component when designing systems requiring high-density octal storage with fast switching speeds. The ACT series offers superior performance compared to older HC or HCT families while maintaining pinout compatibility. Consider the 24 mA output current capability for driving moderate loads without external buffering. Evaluate thermal dissipation requirements given the TSSOP package constraints for high-frequency operation.

Part Context

This part belongs to the CD74ACT family of advanced CMOS logic devices manufactured by Texas Instruments. The ACT series bridges the performance gap between standard CMOS and bipolar TTL technologies. It provides high-speed operation with low power consumption, making it suitable for complex digital designs requiring reliable data retention and rapid processing capabilities.

Replacement Considerations

CD74ACT273M96 (SOIC-20 package)

FAQ

Does the CD74ACT273PWR include individual resets for each flip-flop?

No, the device features a single master reset input that clears all eight flip-flops simultaneously.

What is the maximum operating supply voltage for this component?

The maximum recommended supply voltage is 5.5 V.