CD74HCT73M

Overview

The CD74HCT73M is a dual JK-type flip-flop integrated circuit manufactured by Texas Instruments. It operates within the HCT logic series, utilizing CMOS technology with TTL-compatible inputs. The device features two independent JK flip-flops with negative-edge triggering and an asynchronous reset function. Packaged in a 14-SOIC surface-mount format, it supports a supply voltage range of 4.5 V to 5.5 V. Key electrical specifications include a maximum propagation delay of 38 ns at 4.5 V with 50 pF load, a static current of 4 µA, and output drive capabilities of 4 mA for both high and low states. The component is rated for operation between -55°C and +125°C.

Feature Summary

• Dual JK-type flip-flops with negative-edge clock triggering
• Asynchronous reset functionality for immediate state control
• TTL-compatible input levels within the HCT logic family
• Complementary outputs providing non-inverted and inverted signals

Applications

• Digital data storage and register circuits
• Frequency division and counter logic design
• State machine implementation in embedded systems
• Pulse synchronization and timing control applications

Procurement Notes

Verify the specific ordering suffix to confirm package type and reel specifications. Ensure compatibility with standard SOIC-14 footprints during PCB layout. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Cross-reference pin assignments with the latest datasheet revision to avoid interface mismatches.

Selection Notes

Select this component when dual JK flip-flops with negative-edge triggering are required. The HCT series ensures compatibility with standard TTL logic families. Consider the 14-SOIC package for surface-mount assembly needs. Evaluate the 38 ns propagation delay against system timing requirements. Verify operating temperature range suitability for the intended environment.

Part Context

This part belongs to the Texas Instruments 74HCT logic family, designed for high-speed CMOS operation with TTL-compatible inputs. The CD74HCT73M specifically provides dual JK flip-flops, distinguishing it from D-type or T-type variants within the same series. It serves as a fundamental building block for sequential logic circuits requiring memory elements with defined set and reset behaviors.

Replacement Considerations

• CD74HCT73M96

FAQ

What is the trigger edge for the CD74HCT73M?

The CD74HCT73M utilizes negative-edge triggering, meaning the state changes occur on the falling edge of the clock signal.

Does the CD74HCT73M include a reset function?

Yes, the device includes an asynchronous reset function that allows immediate clearing of the flip-flop outputs regardless of the clock state.