74AC74MTR

Overview

The STMicroelectronics 74AC74MTR is a dual D-type flip-flop with preset and clear inputs, belonging to the 74AC logic series. It features positive-edge triggering and three-state outputs in a 14-SOIC package. The device operates within a supply voltage range of 2V to 6V, with a maximum propagation delay of 9.5ns at 5V and 50pF load. Clock frequency reaches 250 MHz, while static current is 4µA. Output drive capability is 24mA for both high and low states. Operating temperature spans -55°C to 125°C. Input capacitance is 4pF. This component is designed for surface-mount installation.

Feature Summary

• Dual D-type flip-flops with independent preset and clear control inputs
• Positive-edge triggered data storage with non-inverting outputs
• Three-state output configuration for bus-oriented applications
• High-speed CMOS technology ensuring low power consumption

Applications

• Parallel data storage registers
• Shift register construction
• Timing pulse generation circuits
• State machine implementation

Procurement Notes

Verify component authenticity through official manufacturer channels or authorized distributors. Confirm RoHS compliance status as specifications may vary by production batch. Check datasheet revisions for pinout consistency. Ensure storage conditions meet moisture sensitivity level requirements prior to assembly. Validate that the specific order code matches the required package variant.

Selection Notes

Choose this component when dual edge-triggered storage with asynchronous control is required. The 74AC series offers faster switching speeds compared to standard 74LS equivalents. Verify voltage compatibility with system logic levels. Consider thermal performance for high-temperature environments due to the extended operating range. Assess board space constraints against the SOIC package dimensions.

Part Context

This part belongs to the widely adopted 74AC family of high-speed CMOS logic devices. It provides functional compatibility with other industry-standard logic families while offering improved speed and lower power dissipation. The 74AC74 specifically addresses designs requiring multiple synchronized data latches with direct set and reset capabilities in a compact integrated circuit form factor.

Replacement Considerations

Public confirmed substitute part numbers include SN74AC74DWR from Texas Instruments and MC74AC74DWG from onsemi. These alternatives maintain logical equivalence and pin compatibility. Verify package type and electrical specifications match before substitution.