Texas Instruments SN74LV165APWR

of Texas Instruments SN74LV165APWR The SN74LV165APWR is an 8-bit serial-in, parallel-out shift register with a low-voltage CMOS design, which operates from a 2V to 5.5V power supply. This component allows for the efficient storage and transfer of digital data, and it can be utilized in various applications that require shift register functionality. Functions 1. Data Shift Operation: It shifts data into the register on the rising edge of the clock. 2. Parallel Output: The stored data can be read out simultaneously from 8 output pins. 3. Asynchronous Reset: It has an active-low reset input to clear all output pins. 4. Low Voltage Operation: Designed to operate at lower voltage levels for battery-powered applications. 5. High-Speed Operation: It can operate at clock frequencies of up to 25 MHz, depending on supply voltage. Applications - Data Acquisition Systems: To convert parallel data from sensors into a serial format for processing. - Microcontrollers: Expanding the number of input/output pins for applications that need additional I/O. - LED Drivers: Driving multiplexed LED displays or controlling multiple LEDs. - Serial Communication: Converting parallel data from a microcontroller to serial for communication purposes. - Data Storage: Temporary storage of data in various electronic circuits. Alternative Parts 1. SN74HC165: A similar 8-bit serial-in, parallel-out shift register but with standard CMOS technology. 2. 74LS165: An older TTL version of the shift register. 3. SN74HCT165: A variant that is compatible with TTL input levels while operating at CMOS voltage levels. 4. SN74LVC165A: A low-voltage version suitable for more advanced applications with lower power consumption. Embedded Modules The SN74LV165APWR can be integrated into various embedded systems, including but not limited to: - Arduino and Raspberry Pi projects for controlling multiple LEDs or sensors via serial communication. - FPGA projects where shift registers facilitate data handling and I/O expansion. - Custom PCBs where it's used in conjunction with microcontrollers to implement serial peripherals. Related Q&A Q1: What is the maximum clock frequency of the SN74LV165APWR? - A1: The SN74LV165APWR can operate at clock frequencies of up to 25 MHz depending on the supply voltage. Q2: How do I reset the SN74LV165APWR shift register? - A2: The IC has an active-low reset input that can be asserted to reset all output pins and shift register data to zero. Q3: Can the SN74LV165APWR be used in battery-powered applications? - A3: Yes, it operates with a supply voltage range from 2V to 5.5V, making it suitable for low-power and battery-operated applications. Q4: What are the benefits of using a shift register like the SN74LV165APWR in a microcontroller project? - A4: It allows for expanding the number of digital inputs/outputs by serially inputting data into the register, thus enabling control over more devices with fewer microcontroller pins. Q5: What type of data format does the SN74LV165APWR use to input data? - A5: The SN74LV165APWR accepts serial data input bit-by-bit and shifts this data into the register on each clock pulse, allowing for parallel output from its output pins.