NXP 74HC273D,653: Octal D-Type Flip-Edge Flip-Flop with Clear Functionality

In digital electronics, the ability to store and control data is fundamental. The NXP 74HC273D,653 is a highly integrated circuit that excels in this role, providing a robust solution for data storage and transfer across a wide array of applications. This device is an octal D-type flip-flop, meaning it incorporates eight independent, edge-triggered D-type flip-flops within a single 20-pin package.

The core functionality of this IC is to latch the state of its data inputs (D0 to D7) upon the rising edge of a clock signal (CP). This synchronized operation ensures that all eight bits of data are captured and updated simultaneously, which is critical for maintaining data coherence in bus-oriented systems. A key feature of the 74HC273 is its asynchronous master reset (MR). When a low-level signal is applied to the MR pin, all eight outputs (Q0 to Q7) are immediately forced to a low state, regardless of the clock or data input conditions. This clear function provides immediate control for initializing the system or recovering from error states.

Housed in a space-saving SO20 package, the 74HC273D,653 is built on advanced high-speed CMOS technology. This gives it the dual advantage of low power consumption comparable to LSTTL circuits and high noise immunity. It is commonly deployed as a buffer or register for microprocessor input/output ports, temporarily holding data between the processor and peripheral devices. Its applications extend to general-purpose logic, control registers, and data synchronization tasks.

ICGOOODFIND: The 74HC273D,653 from NXP is an efficient and reliable octal D-type flip-flop. Its synchronous data latching, combined with an asynchronous clear function, makes it an indispensable component for system initialization and data management in complex digital designs.

Keywords: Octal D-Type Flip-Flop, Data Latching, Asynchronous Master Reset, High-Speed CMOS, Data Register.