NXP 74HC273PW: Octal D-Type Flip-Trigger with Clear and Positive-Edge Trigger

The NXP 74HC273PW is a high-speed octal D-type flip-flop integrated circuit that belongs to the 74HC family, utilizing Silicon-Gate CMOS technology to achieve low power consumption while maintaining compatibility with LSTTL logic levels. This device is housed in a TSSOP-20 package, making it suitable for space-constrained PCB designs.

Each of the eight flip-flops within the 74HC273 features a common clock (CP) and a Master Reset (MR) input. The MR input is active low; when held low, it clears all outputs (Q0-Q7) to a low state, regardless of the clock or data inputs. This asynchronous clear function provides immediate control over the output state, which is critical for system initialization or error recovery.

The flip-flops are positive-edge triggered, meaning that data present at the Dn inputs is transferred to the Qn outputs only on the low-to-high transition of the clock pulse. This synchronous operation ensures that data is captured at a precise moment, minimizing timing uncertainties and glitches. The outputs are capable of driving up to 10 LSTTL loads, providing sufficient drive strength for most digital systems.

A key feature of the 74HC273 is its buffered outputs, which improve noise immunity and signal integrity. The inputs include diodes for overvoltage protection, enhancing the robustness of the IC in environments with potential voltage spikes.

Typical applications for the 74HC273 include data registers, storage elements, and bus interfacing in digital systems such as microprocessors, data processing units, and control logic. Its ability to latch and hold data makes it ideal for temporary data storage and signal synchronization.

ICGOOODFIND: The 74HC273PW from NXP is a reliable, low-power octal flip-flop with a clear function, offering precise positive-edge triggered data latching and robust performance for a wide range of digital applications.

Keywords:

1. Positive-Edge Triggered

2. Asynchronous Clear

3. Octal D-Type Flip-Flop

4. Low Power Consumption

5. TSSOP-20 Package