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MM74C165N
Product Overview
- Category: Integrated Circuit (IC)
- Use: Shift Register
- Characteristics:
- Serial-in, parallel-out shift register
- 8-bit data storage
- TTL compatible inputs and outputs
- Package: DIP (Dual In-line Package)
- Essence: The MM74C165N is a versatile shift register IC that allows serial data input and parallel data output. It is commonly used in digital systems for data storage and transfer.
- Packaging/Quantity: Available in tubes or reels, with quantities varying based on manufacturer specifications.
Specifications
- Number of Bits: 8
- Input Voltage Range: 0V to 5.5V
- Operating Temperature Range: -40°C to +85°C
- Supply Voltage: 4.75V to 5.25V
- Maximum Clock Frequency: 10 MHz
- Output Current: ±6 mA
Detailed Pin Configuration
The MM74C165N has a total of 16 pins, each serving a specific function:
- SER (Serial Data Input)
- CLK (Clock Input)
- GND (Ground)
- QH' (Serial Output)
- DS (Serial Data Input)
- SH/LD (Shift/Load Input)
- MR (Master Reset Input)
- VCC (Positive Power Supply)
- QA (Parallel Output A)
- QB (Parallel Output B)
- QC (Parallel Output C)
- QD (Parallel Output D)
- QE (Parallel Output E)
- QF (Parallel Output F)
- QG (Parallel Output G)
- QH (Parallel Output H)
Functional Features
- Serial-In, Parallel-Out Operation: The MM74C165N allows data to be serially shifted in and then parallelly outputted.
- TTL Compatibility: The inputs and outputs of the IC are TTL compatible, ensuring seamless integration with other digital systems.
- Shift/Load Control: The SH/LD input determines whether the data is being shifted or loaded into the register.
- Master Reset: The MR input resets the shift register to its initial state.
- High-Speed Operation: With a maximum clock frequency of 10 MHz, the MM74C165N can handle high-speed data transfer.
Advantages and Disadvantages
Advantages: - Versatile and widely used in digital systems - TTL compatibility ensures easy integration - Can handle high-speed data transfer
Disadvantages: - Limited number of bits (8) - Requires external components for complete functionality
Working Principles
The MM74C165N operates based on the principle of serial-in, parallel-out shifting. When the CLK input receives a clock pulse, the data at the SER input is shifted into the register. The SH/LD input determines whether the data is being shifted or loaded into the register. The parallel output pins (QA-QH) provide the stored data in parallel format.
Detailed Application Field Plans
The MM74C165N finds applications in various digital systems, including but not limited to: - Data storage and retrieval systems - Serial-to-parallel data conversion - Input/output expansion in microcontrollers - Communication interfaces - Industrial automation systems
Detailed and Complete Alternative Models
Some alternative models that offer similar functionality to the MM74C165N include: - SN74HC165N - CD74HC165E - 74HC165D
These alternatives can be considered based on specific project requirements and availability.
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Καταγράψτε 10 συνήθεις ερωτήσεις και απαντήσεις που σχετίζονται με την εφαρμογή του MM74C165N σε τεχνικές λύσεις
Sure! Here are 10 common questions and answers related to the application of MM74C165N in technical solutions:
Q: What is MM74C165N? A: MM74C165N is a popular 8-bit parallel-in/serial-out shift register IC (integrated circuit) commonly used in digital electronics.
Q: What is the purpose of MM74C165N? A: The purpose of MM74C165N is to convert parallel data inputs into serial data output, making it useful for applications such as data acquisition, input expansion, and interfacing with microcontrollers.
Q: How many parallel inputs does MM74C165N have? A: MM74C165N has 8 parallel inputs, allowing you to connect up to 8 different signals or devices.
Q: Can MM74C165N be cascaded to increase the number of inputs? A: Yes, MM74C165N can be cascaded by connecting the serial output of one chip to the serial input of another, allowing you to expand the number of inputs as needed.
Q: What is the maximum clock frequency supported by MM74C165N? A: MM74C165N can typically operate at clock frequencies up to 25 MHz, but it's always recommended to refer to the datasheet for specific details.
Q: How do I interface MM74C165N with a microcontroller? A: You can connect the parallel outputs of MM74C165N to the digital input pins of a microcontroller, and use the serial output pin to transfer the data to the microcontroller.
Q: Does MM74C165N require external components for operation? A: Yes, MM74C165N requires a few external components such as resistors and capacitors for proper operation. Refer to the datasheet for the recommended values.
Q: Can MM74C165N handle both rising and falling edge clock signals? A: Yes, MM74C165N is designed to work with both rising and falling edge clock signals, providing flexibility in various applications.
Q: What is the power supply voltage range for MM74C165N? A: The typical power supply voltage range for MM74C165N is 4.5V to 5.5V, but it's important to consult the datasheet for the specific voltage requirements.
Q: Are there any alternative ICs similar to MM74C165N? A: Yes, there are other shift register ICs available in the market that offer similar functionality, such as 74HC165, CD4021, and SN74HC165. It's always good to compare datasheets and choose the one that best fits your requirements.
Please note that these answers are general and may vary depending on the specific application and use case. Always refer to the datasheet and documentation provided by the manufacturer for accurate information.