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Onsemi MC74HC165ADTR2G Environmental and export classification status description

The MC74HC165ADTR2G is an 8-bit parallel-in/serial-out (PISO) shift register. It enables the conversion of parallel data (8 bits) to a serial data stream, allowing for easier communication with microcontrollers or digital systems. It operates at a high-speed CMOS technology. Functions 1. Parallel Load: Allows the loading of data bits into the shift register from the parallel data inputs. 2. Serial Output: Converts the parallel data into a serial format that can be shifted out bit by bit. 3. Clock Input: The shift register is controlled by a clock input which allows for data shifting on the clock cycle. 4. Reset Function: Allows resetting the register to an initial state. 5. Control Logic: Supports various operational modes and provides control functions for loading and shifting data. Applications - Microcontroller Interface: Used to expand the input/output capabilities of microcontrollers by allowing more data to be transferred. - Data Acquisition Systems: Useful in collecting data from multiple sensors or inputs and transmitting them serially. - LED Displays: Can be used in driving LED displays by sequentially activating segments or rows. - Digital Communication: Transfers data across a single line, reducing the number of required connections. - Automation Systems: For controlling devices in industrial automation or system monitoring. Alternative Parts - 74HC595: An 8-bit shift register with serial input and output, also featuring a storage register and three-state output. - 74HC164: An 8-bit serial-in, serial-out shift register, though it lacks the parallel load feature. - MC74HC165A: Another type of parallel-in/serial-out shift register with similar configurations. Embedded Modules - Integrated within microcontroller boards or prototype boards like Arduino through accessory shields to expand input/output capabilities. - Found in digital projects within Raspberry Pi systems for easy data handling. Q&A Section 1. Q: What is the primary function of the MC74HC165ADTR2G? A: The primary function is to convert 8 bits of parallel data into a singular serial output for easier data communication. 2. Q: Can the MC74HC165ADTR2G be used directly with a microcontroller? A: Yes, it can interface directly with microcontrollers to expand their I/O capability by using fewer pins. 3. Q: How does the parallel load feature work in the MC74HC165ADTR2G? A: The parallel load feature allows the user to input 8 bits of data simultaneously into the shift register, which can then be shifted out serially with a clock signal. 4. Q: What are some common applications of the MC74HC165ADTR2G? A: Common applications include LED displays, data acquisition systems, microcontroller interfacing, and digital communication systems. 5. Q: Are there alternative parts to the MC74HC165ADTR2G with similar functionalities? A: Yes, alternatives include the 74HC595, 74HC164, and MC74HC165A, which provide similar shift register functionalities.