Texas Instruments SN74HC573APWR

The SN74HC573APWR is an octal transparent latch with 3-state outputs. It is part of Texas Instruments' High-Speed CMOS logic family and operates at high speed while providing low power consumption. This IC is designed to store 8 bits of data, allowing the data to be output on the pins only when the appropriate control signal is applied. The device features a transparent mode, which allows data to pass through while the latch is enabled. Functions - Data Latch: The device latches data on the input when the latch enable (LE) input is high. - 3-State Outputs: The outputs can be placed in high impedance state when the output enable (OE) input is high, allowing multiple devices to share the same output lines. - Input Data and Output: It has 8 data inputs and 8 corresponding outputs, allowing the storage and retrieval of 8 bits of data. - Clear Functionality: Some configurations may also allow for asynchronous clear functionality. Applications - Data Buffering: Used in digital systems to buffer data streams. - Storage: Temporary storage of data in applications where multiple data lines are needed. - Interface with Microcontrollers: It can interface with microcontrollers to increase the number of available output pins. - Parallel Data Processing: Useful in systems that require parallel data processing or manipulation. Alternative Parts - SN74HC574: A similar octal D-type flip-flop latch with differing behavior. - SN74HCT573: A variation compatible with TTL levels for broader interfacing capabilities. - 74HC373: An octal transparent latch but with different handling of enable and output control. Embedded Modules As of the latest information, the SN74HC573APWR itself is not embedded in specific modules, but it can be found on various PCB designs. It is commonly included in prototyping boards or integrated into larger systems for data manipulation and storage. Related Q&A Q1: What is the purpose of the latch enable (LE) input on the SN74HC573APWR? A1: The latch enable (LE) input controls when data is latched. When LE is high, data at the input is passed to the output. When LE is low, the current output state is retained regardless of input changes until LE goes high again. Q2: How do the 3-state outputs function in the SN74HC573APWR? A2: The 3-state outputs allow the device to place its output pins in a high-impedance state when the output enable (OE) is high. This allows multiple devices to share the same output line without interference. Q3: In what kind of applications would you use the SN74HC573APWR? A3: The SN74HC573APWR is suitable for applications requiring temporary data storage, such as in digital communication, microcontroller interfacing, or as a buffer in data wiring setups. Q4: Can I use the SN74HC573APWR in a 5V system? A4: Yes, the SN74HC573APWR is compatible with standard TTL levels, and it operates correctly at 5V logic levels, making it suitable for use in a variety of 5V systems. Q5: What should I consider when selecting alternative parts for the SN74HC573APWR? A5: Consider the logic levels (HC vs. HCT), required functionality (latch vs. flip-flop), and package type. Ensure that the alternative has similar pin configurations and meets speed and drive requirements of your application.