The M74HCT574B1R is a high-speed CMOS Octal D-Type Flip-Flop with 3-state non-inverting outputs manufactured by STMicroelectronics. This integrated circuit is designed to interface directly with TTL levels and is a critical component for applications requiring the storage of eight bits of data. It is particularly useful in systems where the bus lines require isolation during memory updating or data transfer processes.

Key Features

• High-Speed Performance: The M74HCT574B1R operates at a similar speed to the equivalent LSTTL while offering the advantage of CMOS power dissipation.
• Logic Level Compatibility: This device is designed to be compatible with LSTTL outputs, allowing for easy integration into existing systems without the need for additional interfacing components.
• Octal D-Type Flip-Flops: With eight flip-flops, each with individual D inputs and Q outputs, this IC provides a robust solution for data storage and transfer.
• 3-State Outputs: The non-inverting 3-state outputs ensure efficient bus driving with high-impedance during the off cycle, reducing power consumption and preventing bus contention.
• Output Drive Capability: The M74HCT574B1R can drive up to 15 LSTTL loads, offering significant versatility in driving various components within a system.
• Wide Operating Voltage Range: It operates over a wide range of voltages from 4.5V to 5.5V, providing stable performance across different power supply conditions.

Applications

Thanks to its robust design and compatibility with TTL logic levels, the M74HCT574B1R is suitable for a wide array of applications, including:

• Memory registers
• Data storage and transfer systems
• Communication interfaces
• Microprocessor systems
• Computer systems
• Control systems

The M74HCT574B1R is packaged in a DIP-20 (Dual In-line Package) making it suitable for through-hole mounting, which is advantageous for prototyping and maintenance. This device is a reliable choice for designers and engineers seeking a high-quality octal flip-flop with the assurance of STMicroelectronics' manufacturing expertise.