74HC74DTR2G

Overview

The MC74HC74DTR2G is a dual D-type flip-flop from the onsemi 74HC series, housed in a 14-TSSOP surface-mount package. It operates within a supply voltage range of 2 V to 6 V and supports clock frequencies up to 30 MHz at 5 V. The device features asynchronous preset and clear inputs, positive-edge triggering, and complementary outputs. Key electrical characteristics include a propagation delay of 160 ns at 50 pF load and output drive currents of 5.2 mA for both high and low states. It functions reliably across an extended temperature range of -55 °C to +125 °C.

Feature Summary

• Dual D-type flip-flops with positive-edge triggering and complementary outputs
• Asynchronous preset and clear control inputs for immediate state management
• Wide operating voltage range supporting 2 V to 6 V supply rails
• Extended industrial temperature rating for robust environmental performance

Applications

• Parallel-to-serial data conversion circuits
• Shift register implementations in digital systems
• Frequency division and timing signal generation
• General-purpose storage elements in microcontroller interfaces

Procurement Notes

Verify the complete part number includes the 'MC' prefix and 'AD' suffix if specific variants are required, as standard HC logic may differ. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the TSSOP-14 footprint matches the PCB layout specifications exactly. Check for any recent Product Change Notifications regarding pinout or material updates.

Selection Notes

Select this component when dual independent D-type storage is required within a compact surface-mount form factor. The 74HC series offers compatibility with standard CMOS logic families while providing higher speed than legacy 74HCT devices. Consider the 160 ns propagation delay for timing constraints. The wide voltage range allows flexibility in mixed-voltage system designs without level shifting.

Part Context

This device belongs to the widely adopted 74HC (High-speed CMOS) logic family, known for balancing speed and power consumption. The 74HC74 variant specifically provides two independent flip-flops, making it a staple for sequential logic design. The TSSOP-14 packaging facilitates automated assembly and space-constrained applications compared to traditional DIP packages.

Replacement Considerations

MC74HC74ADTR2G is listed as a similar alternative by distributors.