SN74AHCT74NS

Flip Flops Overview

The SN74AHCT74NS is a dual positive-edge-triggered D-type flip-flop manufactured by Texas Instruments in the AHCT logic series. It features TTL-compatible inputs and CMOS outputs, housed in a 14-pin SOIC package. The device operates within a supply voltage range of 4.5 V to 5.5 V. Key electrical parameters include a propagation delay of 8.8 ns, with output current capabilities of -8 mA for high level and 8 mA for low level. It supports inverting and non-inverting polarities and includes clear and preset functions.

Flip Flops Feature Summary

• Dual positive-edge-triggered D-type flip-flops with clear and preset functionality
• TTL-compatible inputs ensure compatibility with standard logic families
• CMOS outputs provide robust drive capability within specified limits

Flip Flops Applications

• Data storage and register applications
• Shift register implementations
• Timing control circuits

Flip Flops Procurement Notes

Verify the specific ordering suffix 'N' corresponds to the PDIP-14 through-hole package variant when sourcing, as datasheets may list multiple package options for the base part number. Confirm RoHS compliance status directly with the manufacturer or authorized distributors, as environmental declarations can vary by production batch and region. Ensure the procurement channel provides valid traceability documentation for quality assurance purposes.

Flip Flops Selection Notes

Select this component when TTL-to-CMOS interface compatibility is required alongside high-speed performance. The AHCT series offers faster switching speeds compared to standard HC logic while maintaining pin-out compatibility. Consider the 14-pin SOIC or PDIP packaging constraints during PCB layout design. Evaluate the 8.8 ns propagation delay against system timing requirements to ensure signal integrity at operating frequencies.

Flip Flops Part Context

This component belongs to the SN74AHCT family, which bridges the gap between older TTL standards and modern CMOS technology. The '74' designation indicates a dual D-type flip-flop configuration. The 'HCT' suffix specifies High-speed CMOS with TTL-compatible input thresholds. This family is widely used in digital systems requiring reliable data latching and transfer operations across mixed-voltage logic domains.

Flip Flops Replacement Considerations

Compatible substitutes include SN74AHCT74DR (SOIC-14) and SN74AHCT74PW (TSSOP-14). For through-hole applications, SN74AHCT74N serves as a direct package alternative. Automotive-grade variants such as SN74AHCT74QDBVRQ1 are available if AEC-Q100 qualification is required. Verify pin compatibility and electrical specifications before substitution.