CD74ACT273PW

Overview

The CD74ACT273PW is an octal D-type flip-flop from the Texas Instruments ACT logic family, housed in a 20-pin SOIC package. It features eight independent D-type flip-flops with positive-edge triggering and a master reset function. The device operates within a supply voltage range of 4.5 V to 5.5 V. It accepts TTL-compatible inputs and provides non-inverting CMOS outputs. Key electrical characteristics include a maximum propagation delay of 13.5 ns at 5 V with a 50 pF load, and output drive currents of ±24 mA. The component supports an operating temperature range from -55 °C to +125 °C.

Feature Summary

• Contains eight independent positive-edge triggered D-type flip-flops for parallel data storage
• Integrates a master reset input to clear all flip-flops simultaneously
• Provides TTL-compatible input levels with non-inverting CMOS outputs
• Supports wide industrial operating temperatures up to 125 °C

Applications

• Parallel-to-serial or serial-to-parallel data conversion circuits
• Shift register implementations in digital systems
• General-purpose storage registers in microprocessor interfaces
• Counters and state machines requiring octet data latching

Procurement Notes

Verify the specific suffix 'PW' corresponds to the 20-pin Small Outline Integrated Circuit (SOIC) package when sourcing. Confirm that the ACT logic series requirements align with system voltage and speed needs. Ensure compatibility with standard surface-mount assembly processes. Check for any recent product change notifications regarding pinout or electrical specifications before finalizing procurement plans.

Selection Notes

Select this component when an octal D-type flip-flop with TTL-compatible inputs is required. The ACT series offers a balance of speed and power consumption suitable for general digital logic applications. Consider the 20-pin SOIC package for surface-mount design constraints. Verify that the 13.5 ns propagation delay meets the timing requirements of the target circuit. Ensure the 4.5 V to 5.5 V supply voltage range matches the system power rails.

Part Context

This part belongs to the CD74ACT273 series of octal D-type flip-flops manufactured by Texas Instruments. The ACT series combines advanced CMOS technology with TTL-compatible inputs, offering faster switching speeds than standard HC/HCT families while maintaining low power consumption. The 273 variant specifically provides eight flip-flops with a common clock and master reset, distinguishing it from single-bit or quad configurations.

Replacement Considerations

• SN74ACT273PW
• CD74ACT273M96