CD74ACT273E

Overview

The CD74ACT273E is an octal D-type flip-flop from Texas Instruments' ACT logic series, housed in a 20-pin PDIP package. It features non-inverting outputs and TTL-compatible inputs. The device operates within a supply voltage range of 4.5 V to 5.5 V. Key electrical specifications include a propagation delay of 13.5 ns at 5 V with a 50 pF load, high-level output current of -24 mA, and low-level output current of 24 mA. It supports through-hole mounting and functions across a temperature range of -55 °C to +125 °C.

Feature Summary

• Octal configuration providing eight independent D-type flip-flops per package
• ACT series architecture ensuring high-speed performance with 13.5 ns typical propagation delay
• TTL-compatible input structure allowing direct interfacing with standard logic families
• Robust output drive capability supporting both sourcing and sinking currents up to 24 mA

Applications

• High-speed parallel-to-serial data conversion circuits
• Synchronous state storage in digital control systems
• Buffering and latching operations in microprocessor interfaces
• Construction of shift registers for serial data transmission

Procurement Notes

Verify the specific suffix 'E' corresponds to the PDIP-20 through-hole package variant when sourcing. Confirm that the ACT series designation aligns with required speed and voltage specifications for the target application. Ensure environmental ratings meet the -55 °C to +125 °C operating range requirements. Cross-reference datasheet parameters against system timing constraints to validate the 13.5 ns propagation delay under actual load conditions.

Selection Notes

Select this component when an octal latch or flip-flop with high-speed ACT performance is required. The TTL-compatible inputs simplify interface design with legacy or mixed-logic systems. The wide operating temperature range makes it suitable for industrial environments. Consider the PDIP-20 package if through-hole assembly is mandated by the PCB layout or mechanical constraints of the final product.

Part Context

This part belongs to the Texas Instruments CD74ACT family, which combines advanced CMOS technology with TTL compatibility. The ACT series is designed for high-speed applications requiring low power consumption and noise immunity. As an octal D-type flip-flop, it provides efficient data storage solutions for complex digital logic designs requiring multiple synchronized storage elements within a single integrated circuit package.

Replacement Considerations

CD74ACT273N (PDIP-20 variant)

FAQ

What is the maximum low-level output current for the CD74ACT273E?

The maximum low-level output current is specified as 24 mA.

Does the CD74ACT273E have active set or reset controls?

No, the device does not feature active set or reset controls; it relies on clocked data input for state changes.