Texas Instruments 74HC73 Dual JK Flip-Flop IC, Negative-Edge Triggered, 14-Pin

The Texas Instruments 74HC73 is a high-speed CMOS logic dual negative-edge-triggered JK flip-flop, offering robust performance with integrated reset functionality. This integrated circuit combines the low power consumption inherent to CMOS technology with the high-speed operation typically associated with LSTTL logic families, making it an efficient and versatile component for modern digital designs.

Each device features individual J and K data inputs, clock inputs, and complementary Q and Q outputs, providing maximum design flexibility. State changes occur precisely on the negative-going (falling) edge of the clock pulse, while an asynchronous reset is achieved through a low-level input, allowing for immediate control independent of the clock signal. The HCT logic family variant ensures full functional and pin compatibility with standard LS TTL logic, facilitating easy upgrades in existing systems.

Key Features & Benefits

• Enhanced Noise Immunity: Hysteresis on the clock inputs improves performance in noisy environments and allows for increased input rise and fall times.
• Asynchronous Reset: Provides immediate clearing of the flip-flop outputs regardless of the clock state.
• High Drive Capability: Capable of driving up to 10 LSTTL loads, simplifying interfacing with other logic families.
• Balanced Performance: Features buffered inputs and balanced propagation delay and transition times for reliable signal integrity.
• Significant Power Savings: Offers a substantial reduction in power consumption compared to equivalent LSTTL integrated circuits.

This device is functionally identical to the HC/HCT107 but differs in terminal assignments. Its robust design includes protection against high-current conditions, with ratings for DC input/output diode current and DC drain current. It is supplied in a standard 14-pin DIP (Dual In-line Package) format, ideal for through‑‑