The HD74HC273 is an 8-bit positive-edge-triggered D-type flip-flop belonging to the Hitachi High-speed CMOS logic family. This device features eight independent D-type flip-flops with a common clock (CLK) and a clear (CLR) input. The data at the D inputs is transferred to the Q outputs on the positive-going edge of the clock pulse. The clear input asynchronously resets all flip-flops, forcing the Q outputs LOW regardless of the clock or data inputs.

Applications

• Registers
• Latches
• Memory storage
• Data buffering
• Control circuits

Features

• 8 D-type flip-flops: Provides storage for eight bits of data.
• Positive-edge triggered: Data is transferred on the rising edge of the clock.
• Asynchronous clear: Resets all flip-flops independently of the clock.
• High-speed operation: Offers faster switching speeds compared to standard CMOS logic.
• Low power consumption: CMOS technology ensures minimal power dissipation.
• Wide operating voltage range: Typically operates from 2V to 6V.
• High noise immunity: Provides reliable operation in noisy environments.

Benefits

• Simplified data storage and buffering in digital systems.
• Reduced power consumption for energy efficiency.
• Enhanced system reliability with high noise immunity.
• Flexible design options with a wide operating voltage range.
• Convenient asynchronous clear for resetting the register.

Additional Details

The HD74HC273 is available in various packages, including DIP (Dual In-line Package) and SOP (Small Outline Package). The clear input (CLR) is active LOW, meaning that the flip-flops are reset when CLR is LOW and operate normally when CLR is HIGH. The device is commonly used in applications requiring parallel data storage, such as registers, latches, and memory circuits. The positive-edge triggering simplifies timing considerations in synchronous systems. Proper decoupling with capacitors close to the power supply pins is recommended. Refer to the datasheet for detailed electrical characteristics, timing diagrams, and application notes. The device is a reliable and efficient solution for implementing data storage in digital systems.