ON Semiconductor MC74HC574AFELG Octal D-Type Flip-Flop

The MC74HC574AFELG is a high-performance, octal D-type flip-flop integrated circuit from ON Semiconductor, designed for use in a wide range of digital applications. This device features eight edge-triggered flip-flops with individual D-type inputs and 3-state outputs, making it an ideal choice for interfacing with bus-oriented systems.

The flip-flops in the MC74HC574AFELG capture the state of their individual D inputs on the rising edge of the clock input signal. Once captured, the data is held stable at the outputs until the next rising edge of the clock signal. The 3-state output configuration allows for connection to a bus, where multiple outputs can share the same line without interference, as long as only one device is enabled at a time.

Constructed with ON Semiconductor's high-speed silicon-gate technology, the MC74HC574AFELG offers robust performance and is capable of operating at high speeds. It also has a broad voltage range, functioning optimally between 2V and 6V, which provides flexibility in various power environments and compatibility with TTL levels.

Key features of the MC74HC574AFELG include:

• Eight D-type flip-flops with single clock input
• 3-state outputs for bus-oriented applications
• Output drive capability: 15 LSTTL loads
• Standardized symmetrical output characteristics
• High noise immunity characteristic of CMOS devices
• Low power consumption: 80 μA maximum ICC
• Wide operating voltage range: 2V to 6V

This device is packaged in a 20-lead SOIC package, ensuring a compact footprint for space-constrained applications. The MC74HC574AFELG is also characterized for operation from -55°C to 125°C, making it suitable for industrial and automotive applications that demand high reliability and performance under extreme conditions.

The combination of high-speed operation, wide voltage range, and robust 3-state outputs makes the MC74HC574AFELG a versatile component for implementing memory registers, buffers, and control circuits in digital systems. Its compatibility with existing TTL logic levels also enables easy integration into mixed-technology environments.