74AC374TTR

Overview

The STMicroelectronics 74AC374TTR is an octal D-type edge-triggered flip-flop featuring three-state outputs. It operates within a voltage range of 2V to 6V and supports a maximum frequency of 270MHz at 5V. The device exhibits low power dissipation with a maximum supply current of 4µA. It provides high noise immunity and symmetrical output impedance, ensuring balanced propagation delays. Designed for surface-mount applications, it utilizes a TSSOP-20 package.

Feature Summary

• Octal D-type flip-flop architecture with non-inverted true outputs
• Three-state output capability for bus driving applications
• High-speed CMOS technology supporting up to 270MHz operation
• Low power consumption with minimal static current draw

Applications

• High-speed data bus buffering
• Parallel-to-serial conversion circuits
• Digital signal processing systems
• Memory address latching

Procurement Notes

Verify the specific manufacturer designation on the component marking, as Rochester Electronics also distributes this part number. Confirm the package type matches the required TSSOP-20 footprint. Ensure the operating environment stays within the specified temperature range. Check for RoHS compliance status if required by the assembly process. Validate that the three-state outputs align with the system bus requirements.

Selection Notes

Select this component when an octal latch with tri-state control is required for high-speed digital interfaces. The wide voltage range allows compatibility with various logic families. Consider the TSSOP-20 package for space-constrained PCB layouts. Ensure the design accounts for the symmetrical output drive capabilities to maintain signal integrity across the bus lines.

Part Context

This component belongs to the 74AC series of high-speed CMOS logic devices. It serves as a fundamental building block for sequential logic circuits requiring parallel data storage. The AC series offers improved speed over standard TTL equivalents while maintaining low power characteristics. It is functionally compatible with other 74-series logic families for system integration.

Replacement Considerations

SN74AC374 from Texas Instruments is a confirmed functional substitute. MC74AC374DWG from onsemi is another verified alternative. CD74AC374M from Texas Instruments is listed as a similar option.