ON Semiconductor MC74ACT574DWG Octal D-Type Flip-Flop

The MC74ACT574DWG from ON Semiconductor is a high-performance, octal D-type flip-flop with a clear function, designed for use in a wide range of digital applications. This integrated circuit (IC) is part of the ACT family, which is known for its high-speed CMOS technology and is capable of operating with the speed of LS-TTL gates while maintaining the low power consumption of standard CMOS integrated circuits.

This device features eight edge-triggered flip-flops with individual D-type inputs and 3-state true outputs. The 3-state outputs are capable of driving up to 15 LSTTL loads, making the MC74ACT574DWG suitable for bus-oriented applications. The flip-flops will store the state of their individual D-inputs that meet the set-up and hold time requirements on the LOW-to-HIGH clock (CLK) transition. A LOW logic level on the clear (CLR) input will reset the outputs to the LOW state, overriding all other inputs, including the CLK.

The MC74ACT574DWG has a wide operating voltage range of 4.5V to 5.5V and can operate in temperatures ranging from -40°C to +85°C, making it reliable for use in harsh environments. The device comes in a 20-pin SOIC package, which offers a compact footprint while providing ample pin spacing for ease of PCB layout and signal routing.

Key features of the MC74ACT574DWG include:

• Eight D-type flip-flops with clear
• 3-state outputs for bus-oriented applications
• Edge-triggered from active-HIGH to active-LOW clock transition
• Wide operating voltage range of 4.5V to 5.5V
• Inputs and outputs on opposite sides of the package to facilitate PCB layout
• Output drive capability: 15 LSTTL loads
• Low input current of 1 μA max
• Static operation: no clock or refreshing required
• Standard output is TTL compatible
• Temperature range: -40°C to +85°C

Whether used in microprocessor systems, computer memory, data storage, or other sequential logic applications, the MC74ACT574DWG provides a reliable solution for data storage and transfer operations in digital systems.