SN74LS294N
Product Overview
- Category: Integrated Circuit (IC)
- Use: Shift Register
- Characteristics:
- High-speed operation
- Low power consumption
- Wide operating voltage range
- TTL compatible inputs and outputs
- Package: DIP (Dual In-line Package)
- Essence: Serial-in, parallel-out shift register
- Packaging/Quantity: Available in tubes of 25 or reels of 2,000 units
Specifications
- Supply Voltage Range: 4.75V to 5.25V
- Operating Temperature Range: -40°C to +85°C
- Maximum Clock Frequency: 30 MHz
- Number of Stages: 8
- Output Drive Capability: 10 LSTTL Loads
Detailed Pin Configuration
- SER (Serial Data Input)
- CLK (Clock Input)
- RCLK (Register Clock Input)
- SRCLR (Shift Register Clear Input)
- QA-QH (Parallel Outputs)
- GND (Ground)
- QH' (Serial Output)
- VCC (Supply Voltage)
Functional Features
- Serial-in, parallel-out shifting of data
- Asynchronous reset capability
- Synchronous parallel loading of data
- Cascadable for larger shift registers
- Direct overriding clear
- Buffered outputs for driving external loads
Advantages
- High-speed operation allows for quick data transfer
- Low power consumption reduces energy usage
- Wide operating voltage range provides flexibility in different applications
- TTL compatibility ensures easy integration with other ICs
Disadvantages
- Limited number of stages (8) may not be sufficient for certain applications requiring longer shift registers
- DIP package may not be suitable for space-constrained designs
Working Principles
The SN74LS294N is a serial-in, parallel-out shift register. It receives data serially through the SER input and shifts it into its internal register on each rising edge of the CLK input. The RCLK input is used to latch the parallel data from the internal register to the output pins QA-QH. The SRCLR input asynchronously clears the shift register, while the QH' pin provides a serial output of the last stage.
Detailed Application Field Plans
The SN74LS294N can be used in various applications, including:
- Data storage and retrieval systems
- Serial-to-parallel data conversion
- LED matrix displays
- Digital counters and timers
- Communication systems
- Control and automation systems
Detailed and Complete Alternative Models
- 74HC595: 8-bit serial-in, parallel-out shift register with similar features but CMOS technology.
- CD4015: Dual 4-stage static shift register with complementary outputs.
- SN74HC164: 8-bit serial-in, parallel-out shift register with asynchronous clear and synchronous parallel load.
These alternative models offer similar functionality and can be considered as substitutes for the SN74LS294N depending on specific requirements.
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Liste 10 almindelige spørgsmål og svar relateret til anvendelsen af SN74LS294N i tekniske løsninger
Sure! Here are 10 common questions and answers related to the application of SN74LS294N in technical solutions:
Q: What is SN74LS294N? A: SN74LS294N is a 4-bit parallel-in/serial-out shift register IC (integrated circuit) commonly used in digital electronics.
Q: What is the purpose of using SN74LS294N? A: SN74LS294N is used for serial data conversion, data storage, and data transfer applications in various electronic systems.
Q: How does SN74LS294N work? A: It takes parallel input data and shifts it out serially based on clock pulses. It can also store data temporarily in its internal registers.
Q: What is the maximum clock frequency supported by SN74LS294N? A: The maximum clock frequency supported by SN74LS294N is typically around 25 MHz.
Q: Can SN74LS294N be cascaded to increase the number of bits? A: Yes, multiple SN74LS294N ICs can be cascaded together to increase the number of bits for larger data processing requirements.
Q: What is the power supply voltage range for SN74LS294N? A: SN74LS294N operates within a power supply voltage range of 4.75V to 5.25V.
Q: Does SN74LS294N have built-in output latches? A: No, SN74LS294N does not have built-in output latches. It requires external latches if latched outputs are needed.
Q: Can SN74LS294N be used in both synchronous and asynchronous modes? A: Yes, SN74LS294N can operate in both synchronous and asynchronous modes, depending on the application requirements.
Q: What is the typical power consumption of SN74LS294N? A: The typical power consumption of SN74LS294N is around 10-15 mW.
Q: Are there any specific precautions to consider when using SN74LS294N? A: It is important to ensure proper decoupling capacitors are used near the power supply pins to minimize noise and voltage fluctuations. Additionally, care should be taken to avoid exceeding the maximum ratings specified in the datasheet.
Please note that these answers are general and may vary based on specific datasheets and application requirements.