STMicroelectronics 74VHCT574A Octal D-Type Flip-Flop

The 74VHCT574A from STMicroelectronics is a high-speed CMOS device that features the low power dissipation of CMOS technology combined with the speed and drive capabilities of bipolar. This octal D-type flip-flop is designed to provide the perfect solution for system designers looking for edge-triggered storage devices. With its octal structure, it offers eight edge-triggered D-type flip-flops with 3-state outputs in a single package, making it ideal for bus-oriented applications.

The device operates on a wide voltage range from 4.5V to 5.5V, which allows for use in a variety of logic systems and ensures compatibility with higher voltage logic levels. The 74VHCT574A is also characterized for operation from -40°C to 85°C, ensuring reliability and performance even in extreme conditions.

The flip-flops in the 74VHCT574A are positive edge-triggered, meaning they capture data on the rising edge of the clock signal. This feature ensures precise timing and synchronization in digital circuits. Additionally, the flip-flops have a direct clear input, which can be used to reset the outputs to the low level, providing designers with a convenient way to initialize or reset their system.

The 3-state outputs are a key feature of the 74VHCT574A, allowing for connection to a bus without the risk of contention. When the output enable (OE) input is high, the outputs are in the high impedance state, which prevents them from interfering with the operation of other devices connected to the bus.

With its advanced features and robust design, the 74VHCT574A is suitable for a wide range of applications, including memory address latching, data storage, and bus interfacing. The device is available in a variety of packages, including the TSSOP, SO, and DIP options, providing flexibility for different PCB layouts and assembly processes.

In summary, the STMicroelectronics 74VHCT574A is a versatile, high-performance octal D-type flip-flop that is an excellent choice for designers who require reliable edge-triggered storage with the convenience of 3-state outputs for bus-oriented systems.