NXP 74LV273D: A Detailed Overview of the Low-Voltage Octal D-Type Flip-Flop IC

The NXP 74LV273D is a highly integrated, low-voltage octal D-type flip-flop designed for a wide range of digital logic applications. As a member of the 74LV family, this IC is optimized for operation at reduced voltage levels, typically between 1.0 V and 5.5 V, making it an ideal choice for battery-powered devices and systems where power efficiency is critical. Its primary function is to store the state of eight individual data lines, providing reliable data retention and transfer within a digital circuit.

Housed in a common 20-pin SOIC (Small Outline Integrated Circuit) package, the 74LV273D features eight edge-triggered D-type flip-flops with a common clock (CP) and a common master reset (MR) input. A low signal on the MR pin asynchronously clears all flip-flop outputs (Q0-Q7) to a low state, regardless of the clock or data inputs, providing immediate system reset capability. Data at the Dn inputs is transferred to the corresponding Qn outputs on the low-to-high transition (positive edge) of the clock pulse, ensuring synchronous and stable operation.

Key to its utility in bus-oriented applications is its ability to interface between TTL and CMOS logic levels, thanks to its wide operating voltage range. This allows it to act as a buffer or a register in mixed-voltage environments. Furthermore, the outputs are capable of sourcing or sinking a significant amount of current, enabling them to drive outputs directly.

Typical applications for the 74LV273D include use as data registers, temporary storage units, input/output (I/O) port registers, and as a fundamental building block in counters and other sequential logic circuits. Its octal design provides a compact solution for handling byte-wide data, reducing board space and component count compared to using multiple single flip-flops.

ICGOOODFIND: The NXP 74LV273D stands out as a robust, versatile, and power-efficient solution for modern digital design, offering reliable data storage and transfer with the benefits of low-voltage operation and high noise immunity.

Keywords: Low-Voltage, Octal D-Type Flip-Flop, Edge-Triggered, Master Reset, CMOS-Compatible.