Texas Instruments SN74HC373NSR

The SN74HC373NSR is an octal D-type transparent latch designed for high-speed, low-power applications. It is ideal for storing data temporarily and can be used in various digital circuit applications. The device has eight data inputs, eight outputs, and control inputs, allowing it to latch the data under specific conditions. Functions: - Eight D-type Latches: It provides eight latches that can store one bit of data per channel. - Transparent Operation: When the enable signal (LE) is high, the latches are transparent, allowing data to pass through from the inputs to the outputs. - Output Control: The outputs can be independently controlled, and data will hold its value once the LE signal goes low. - High-speed Operation: It operates at high speed and low power, making it suitable for modern digital applications. Applications: - Data Buffering: It can be used to temporarily hold data between different parts of a circuit, such as between a microcontroller and peripheral devices. - Data Manipulation: Useful in logic operations, data manipulation, or as a building block in more complex circuits. - Register Storage: Acts as a register for digital systems, where data needs to be stored and manipulated. - Level Shifting: It can be used in circuits where level shifting between different voltage levels is necessary. Alternative Parts: Some alternatives to the SN74HC373 include: - 74HC573: A similar octal latch with tri-state outputs. - 74HCT373: An HCT version that is compatible with TTL logic levels. - 74LS373: A low-speed version of the octal latch which offers slightly different electrical characteristics. Embedded Modules: While the SN74HC373 can be used in standalone designs, it may also be found integrated into: - FPGA and CPLD Development Boards: Used for various digital operations and data storage. - Microcontroller Interfacing Modules: Frequently used to interface microcontrollers with additional peripheral devices. Q&A: Q1: What is the main use case for the SN74HC373? A1: The SN74HC373 is primarily used for data storage in digital circuits, serving as a temporary data buffer to hold information between different stages of processing. Q2: How does the latch operate in transparent mode? A2: When the latch enable (LE) signal is high, the latch operates in transparent mode, meaning that the output will reflect the input value immediately. Once LE goes low, the output holds the last input value. Q3: What voltage range can the SN74HC373 operate at? A3: The SN74HC373 typically operates in a supply voltage range of 2V to 6V, making it suitable for various logic level applications. Q4: Can the SN74HC373 interface with TTL logic levels? A4: Yes, the SN74HC373 can interface with TTL logic levels, especially in the HCT variant (74HCT373), designed specifically for compatibility with TTL signals. Q5: How many bits can the SN74HC373 store, and how are these organized? A5: The SN74HC373 can store 8 bits of data, organized into eight separate latches, each corresponding to one input data line.