SN74HCT573DWRE4

The SN74HCT573DWRE4 is a high-speed, octal D-type latch designed by Texas Instruments. It is part of the HCT (High-speed CMOS TTL-compatible) family, which means it is compatible with TTL logic levels while offering the advantages of CMOS technology, such as lower power consumption and higher noise immunity.

Key Features:

1. Functionality: The SN74HCT573 is an octal latch, meaning it can store 8 bits of data. It has a D (data) input for each of the 8 bits, and it captures the input data on the rising edge of the latch enable (LE) signal.

2. Latch Enable (LE): The device features a latch enable input that controls when the data is captured. When LE is high, the data present at the D inputs is latched into the output (Q) registers. When LE is low, the outputs remain unchanged regardless of the D inputs.

3. Output Control: The outputs can be controlled using the output enable (OE) pin. When OE is low, the outputs are enabled and reflect the latched data. When OE is high, the outputs are in a high-impedance state, effectively disconnecting them from the circuit.

4. Power Supply: The SN74HCT573 operates with a supply voltage range of 4.5V to 5.5V, making it suitable for standard TTL and CMOS applications.

5. Speed: The device is designed for high-speed operation, with typical propagation delays of around 10 ns at 5V, making it suitable for fast digital circuits.

6. Temperature Range: It is rated for operation over a wide temperature range, typically from -40°C to +125°C, which allows it to be used in various environmental conditions.

7. Package Type: The "DW" in the part number indicates that the device comes in a TSSOP (Thin Shrink Small Outline Package) package, which is compact and suitable for space-constrained applications. The "RE4" suffix indicates that the part is lead-free and compliant with RoHS standards.

8. Applications: The SN74HCT573 is commonly used in applications such as data storage, temporary data holding, and interfacing between different logic families. It is ideal for use in digital systems where data needs to be latched and controlled.

Pin Configuration:

The SN74HCT573 has a total of 20 pins, with the following key pins:

• D0-D7: Data inputs for the 8 bits.
• LE: Latch enable input.
• OE: Output enable input.
• Q0-Q7: Outputs corresponding to the data inputs.
• GND: Ground connection.
• VCC: Power supply connection.

Summary:

The SN74HCT573DWRE4 is a versatile and efficient octal D-type latch that combines the benefits of CMOS technology with TTL compatibility. Its high-speed performance, low power consumption, and robust design make it an excellent choice for a wide range of digital applications.