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MM74C165N Specifications
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TypeParameter
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Supplier Device Package16-PDIP
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Package / Case16-DIP (0.300", 7.62mm)
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Mounting TypeThrough Hole
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Operating Temperature-40°C ~ 85°C
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Voltage - Supply3V ~ 15V
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FunctionParallel or Serial to Serial
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Number of Bits per Element8
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Number of Elements1
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Output TypeComplementary
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Logic TypeShift Register
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PackagingTube
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Product StatusObsolete
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Series74C
The MM74C165N is a 8-bit parallel in/serial out shift register IC chip. Some advantages and application scenarios of this chip are:1. Compact design: The MM74C165N is a small and compact IC chip, making it suitable for applications where space is limited.2. Easy interfacing: It allows easy interfacing with microcontrollers or other digital devices. It can be connected to a microcontroller's GPIO pins to expand the number of input or output ports.3. Input expansion: The chip provides 8-bit parallel input capability, which allows expansion of the number of input pins on a microcontroller or digital system.4. Serial communication: It offers a serial output interface, making it useful for serial communication protocols such as SPI (Serial Peripheral Interface) or shift register chain configurations.5. Data storage: The chip has the ability to store data temporarily in the shift register until it is shifted out, making it useful in applications where data needs to be stored or transferred sequentially.Application scenarios for MM74C165N:1. Keypad scanning: The chip can be used to scan a matrix keypad, where the keypad buttons are connected to the parallel inputs of the shift register. By shifting out the data, the microcontroller can detect which button is pressed.2. LED control: It can be used to control multiple LEDs using fewer microcontroller pins. By connecting the LEDs to the parallel outputs of the shift register, the microcontroller can shift the desired LED patterns for display.3. Serial data acquisition: The chip can be used for serial data acquisition from sensors or other devices with serial output. By connecting the serial output of the device to the serial input of the shift register, the microcontroller can read the data by shifting it out.4. Multiple switch input: It can be used to read the state of multiple switches using only a few microcontroller pins. By connecting the switches to the parallel inputs of the shift register, the microcontroller can read the state of each switch by sequentially shifting out the data.5. LED matrix driving: The chip can be used to drive a LED matrix display. By connecting the cathode or anode lines of the LED matrix to the parallel outputs of the shift register, the microcontroller can shift the desired patterns for display on the LED matrix.
MM74C165N Relevant information