STMicroelectronics M74HCT574M1R Octal D-Type Flip-Flop

The M74HCT574M1R from STMicroelectronics is a high-speed CMOS octal D-type flip-flop with 3-state outputs. This integrated circuit is designed for use in applications that require the storage of eight bits of data in a latch-type configuration. It offers the ability to store data with the edge of a clock signal and provides output only when enabled, making it an essential component for digital systems that require controlled data flow.

The device features eight edge-triggered flip-flops with individual D-type inputs and 3-state true outputs. The collected data from the D inputs is transferred to the outputs on the rising edge of the clock pulse. When the output enable (OE) is low, the outputs will actively reflect the data present at the flip-flop outputs. However, when OE is high, the outputs will be in a high impedance state, allowing for bidirectional data flow or connection to a common data bus.

Compatibility with standard TTL integrated circuits is ensured through the HCT logic level, which allows the M74HCT574M1R to interface with TTL logic levels while maintaining the low power consumption of CMOS technology. This feature makes it a versatile choice for interfacing in mixed-technology environments.

Key specifications of the M74HCT574M1R include:

• Supply Voltage Range: 4.5V to 5.5V
• High-Speed: tPD = 15ns (Typ) at VCC = 5V
• Low Power Dissipation: ICC = 4µA (Max) at TA = 25°C
• High Noise Immunity: VNIH = VNIL = 28% VCC (Min)
• Power Down Protection on Inputs and Outputs
• Pin and Function Compatible with 74 Series

The M74HCT574M1R is available in a SOIC-20 package, which is suitable for surface-mount technology (SMT) and is recognized for its compact size and ease of integration into a wide range of electronic systems. The device is ideal for use in registers, buffers, and as a temporary storage for binary information, providing reliable and stable performance in commercial and industrial operating conditions.

With its combination of high-speed operation, low power consumption, and the ability to interface with multiple logic families, the M74HCT574M1R from STMicroelectronics is a practical choice for designers looking to implement efficient and reliable data storage solutions in their digital applications.