SN74HC573APWR

The SN74HC573APWR is a high-speed CMOS octal transparent latch designed by Texas Instruments. It is part of the 74HC family of logic devices, which are known for their high-speed performance and low power consumption. Here’s a detailed description of its features and specifications:

General Description:

• Functionality: The SN74HC573APWR is an octal latch that can store 8 bits of data. It operates in a transparent mode, meaning that when the latch enable (LE) input is high, the output follows the input. When LE is low, the output holds the last state of the input.
• Data Inputs and Outputs: It has 8 data inputs (D0 to D7) and 8 corresponding outputs (Q0 to Q7). The outputs are capable of driving standard TTL loads.

Key Features:

• High-Speed Operation: The device can operate at high speeds, with a maximum propagation delay of around 15 ns at a supply voltage of 5V.
• Low Power Consumption: The SN74HC573APWR is designed to consume low power, making it suitable for battery-operated devices.
• Wide Supply Voltage Range: It operates with a supply voltage range of 2V to 6V, allowing for flexibility in various applications.
• TTL Compatible: The outputs are TTL-compatible, which means they can interface directly with other TTL logic devices.
• Active-Low Enable: The latch enable (LE) input is active low, meaning that the latch will capture the input data when LE is low.

Pin Configuration:

• The SN74HC573APWR is available in a 20-pin TSSOP (Thin Shrink Small Outline Package) form factor, which is compact and suitable for surface-mount applications.
• The pins are arranged in a way that allows for easy integration into circuit boards, with clear labeling for each input and output.

Applications:

• Data Storage: It is commonly used in applications where temporary data storage is required, such as in data buffers and registers.
• Control Systems: The device can be used in control systems where data needs to be latched and held until needed.
• Digital Signal Processing: It is suitable for use in digital signal processing applications where high-speed data handling is essential.

Electrical Characteristics:

• Input Voltage Levels: The input high voltage (VIH) is typically around 2V to 6V, while the input low voltage (VIL) is typically 0V to 0.8V.
• Output Voltage Levels: The output high voltage (VOH) is typically close to the supply voltage, while the output low voltage (VOL) is typically close to ground.
• Current Ratings: The device can source or sink a maximum of 25 mA per output pin.

Conclusion:

The SN74HC573APWR is a versatile and efficient octal latch that is ideal for a variety of digital applications. Its combination of high-speed performance, low power consumption, and compatibility with TTL logic makes it a popular choice among engineers and designers in the field of electronics.