74AHCT74D,118

Overview

The Nexperia 74AHCT74D,118 is a dual D-type flip-flop with set and reset inputs, operating on positive-edge triggering. It belongs to the AHCT logic series, ensuring TTL-compatible input levels while maintaining CMOS performance. The device is housed in a 14-SOIC surface-mount package (SOT108). It supports a supply voltage range of 2V to 5.5V, with a maximum propagation delay of 9.3ns at 5V and 50pF load. The component operates within a temperature range of -40°C to +125°C and features low static current consumption of 2µA.

Feature Summary

• Dual positive-edge triggered D-type flip-flops with asynchronous active-low set and reset capabilities
• TTL-compatible input levels provided by the AHCT logic series for seamless integration with LSTTL systems
• Schmitt-trigger action on clock inputs ensures high tolerance to slow rise and fall times

Applications

• Parallel data storage and register applications
• Shift register construction
• Timing delay circuits
• Pulse shaping and waveform generation

Procurement Notes

Verify the specific ordering suffix ',118' to confirm the SOIC-14 tape-and-reel packaging configuration. Ensure that the design environment supports the specified 2V to 5.5V supply voltage range. Confirm that the thermal management strategy accommodates the -40°C to +125°C operating temperature limits defined in the datasheet specifications.

Selection Notes

Select this component when TTL-level interface compatibility is required alongside high-speed CMOS performance. The dual configuration offers space efficiency compared to single flip-flop variants. Consider the 14-SOIC package for surface-mount assembly requirements. Verify that the asynchronous set and reset functions meet the control logic requirements of the target application circuit.

Part Context

This part is a member of the Nexperia 74AHCT family, which bridges Low-Power Schottky TTL (LSTTL) systems with modern CMOS technology. The '74' designation indicates a dual D-type flip-flop topology. The 'D' suffix specifies the SOIC plastic package, while ',118' denotes the standard reel packaging format used for automated surface-mount placement processes.

Replacement Considerations

Direct pin-compatible substitutes include other manufacturers' 74AHCT74 devices in SOIC-14 packages. Cross-reference with 74HC74 variants if TTL input thresholds are not strictly required. Verify that any replacement maintains the same asynchronous set/reset functionality and positive-edge triggering characteristic.