ON Semiconductor 74VHC574SJ Octal D-Type Flip-Flop with 3-STATE Outputs

The 74VHC574SJ from ON Semiconductor is a high-speed CMOS device that belongs to a family of octal D-type flip-flops. This integrated circuit is designed to provide a high-performance solution for a variety of digital applications, particularly where the storage of data is essential. The 74VHC574SJ is characterized by its low power consumption and high noise immunity, typical of CMOS technology, making it an excellent choice for battery-operated and noise-sensitive electronic systems.

The device features eight edge-triggered flip-flops with individual D-type inputs and 3-STATE outputs. The flip-flops capture the state of their individual D inputs on the rising edge of the clock signal (CLK), making the device suitable for implementing synchronous state machines, buffers, and registers. When the Output Enable (OE) input is low, the eight 3-STATE outputs are active, presenting the stored data. Conversely, when OE is high, the outputs are in a high-impedance state, which allows for bus-oriented applications and shared data lines without conflict.

Constructed with advanced silicon-gate CMOS technology, the 74VHC574SJ ensures reliable operation over a broad voltage range from 2V to 5.5V. This wide operating range grants compatibility with TTL levels while maintaining CMOS low power dissipation. The device is offered in a slim 20-lead small outline package (SOIC), designated by the 'SJ' suffix, which is optimal for space-constrained applications.

Key features of the ON Semiconductor 74VHC574SJ include:

• High-speed performance: t<sub>PD = 5.8ns (typ) at V<sub>CC = 5V
• Low power dissipation: I<sub>CC = 4µA (max) at T<sub>A = 25°C
• High noise immunity: V<sub>NIH / V<sub>NIL = 28% V<sub>CC (min)
• Power down protection is provided on all inputs and outputs
• Pin and function compatible with 74LS574

Whether used in personal computers, office automation, telecommunication systems, or other digital applications, the ON Semiconductor 74VHC574SJ offers a reliable and efficient solution for data storage and transfer operations. Its robust design and versatile features make it a valuable component for designers looking to enhance system performance while minimizing power consumption.