CD74HCT574EG4

The CD74HCT574EG4 is a high-speed CMOS (Complementary Metal-Oxide-Semiconductor) octal D-type flip-flop with a 3-state output, designed for use in digital circuits. It is part of the 74HCT family, which is known for its compatibility with TTL (Transistor-Transistor Logic) levels while providing the advantages of CMOS technology, such as lower power consumption and higher noise immunity.

Key Features:

1. Functionality: The CD74HCT574EG4 contains eight D-type flip-flops, which can store one bit of data each. The flip-flops are triggered on the rising edge of the clock signal, allowing for synchronous data storage.

2. 3-State Outputs: Each flip-flop has a 3-state output, which means it can be in one of three states: high (logic 1), low (logic 0), or high-impedance (Z). This feature is particularly useful for bus-oriented applications where multiple devices can share the same output lines.

3. Input and Output Compatibility: The device is designed to operate with standard TTL input levels, making it compatible with a wide range of digital logic circuits. It can accept input voltages that are typical for TTL logic while providing CMOS output levels.

4. Power Supply: The CD74HCT574EG4 typically operates with a power supply voltage of 4.5V to 5.5V, making it suitable for a variety of applications in both battery-powered and line-powered devices.

5. Temperature Range: The device is rated for operation over a temperature range of -40°C to +125°C, which allows it to be used in industrial and automotive applications where temperature extremes may be encountered.

6. Package Type: The "EG4" designation indicates that the device is available in a specific package type, typically a TSSOP (Thin Shrink Small Outline Package) or similar, which is compact and suitable for surface-mount technology (SMT) applications.

7. Pin Configuration: The CD74HCT574EG4 features a standard pin configuration that includes inputs for the clock (CLK), data (D), and enable (EN) signals, as well as outputs (Q) for each flip-flop. The exact pin layout can be found in the manufacturer's datasheet.

Applications:

The CD74HCT574EG4 is widely used in various digital applications, including:

• Data storage and transfer in microcontroller and microprocessor systems.
• Shift registers and data latches in communication systems.
• Temporary data storage in digital signal processing.
• Control systems where multiple signals need to be managed simultaneously.

Conclusion:

The CD74HCT574EG4 from Texas Instruments is a versatile and reliable component for digital circuit design, offering high-speed performance, low power consumption, and compatibility with existing TTL logic. Its octal configuration and 3-state outputs make it an ideal choice for applications requiring efficient data handling and storage. For detailed specifications, including electrical characteristics and timing diagrams, refer to the official datasheet provided by Texas Instruments.