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SN74HC258PWT
Product Overview
Category: Integrated Circuit (IC)
Use: The SN74HC258PWT is a quad 2-input multiplexer that belongs to the SNx4HC family of high-speed CMOS logic devices. It is designed to select one of four data inputs and route it to a single output, based on the control inputs.
Characteristics: - High-Speed CMOS Logic - Quad 2-Input Multiplexer - Wide Operating Voltage Range: 2V to 6V - Low Power Consumption - Schmitt-Trigger Inputs for Noise Immunity - Available in TSSOP Package
Package: TSSOP (Thin Shrink Small Outline Package)
Essence: The SN74HC258PWT is an essential component in digital systems where multiple data sources need to be selectively routed to a single output based on control signals.
Packaging/Quantity: The SN74HC258PWT is typically available in reels or tubes, with a quantity of 2500 units per reel/tube.
Specifications
- Supply Voltage Range: 2V to 6V
- Input Voltage Range: 0V to VCC
- Output Voltage Range: 0V to VCC
- Maximum Input Current: ±1mA
- Maximum Output Current: ±25mA
- Propagation Delay: 9ns (typical)
- Operating Temperature Range: -40°C to +85°C
Pin Configuration
The SN74HC258PWT has a total of 16 pins, which are assigned specific functions as follows:
+---+--+---+
A0 |1 +--+ 16| VCC
B0 |2 15| Y
A1 |3 14| B1
B1 |4 13| A2
A2 |5 12| B2
B2 |6 11| A3
GND |7 10| B3
G1 |8 9| G2
+----------+
Functional Features
- Quad 2-Input Multiplexer: The SN74HC258PWT can select one of four data inputs (A0-A3, B0-B3) and route it to the output pin (Y) based on the control inputs (G1, G2).
- Schmitt-Trigger Inputs: The device features Schmitt-trigger inputs that provide noise immunity and improve the overall reliability of the circuit.
- Wide Operating Voltage Range: The SN74HC258PWT can operate within a voltage range of 2V to 6V, making it compatible with various digital systems.
- Low Power Consumption: The IC is designed to consume low power, making it suitable for battery-powered applications.
Advantages and Disadvantages
Advantages: - High-speed operation due to CMOS technology. - Noise immunity provided by Schmitt-trigger inputs. - Wide operating voltage range allows compatibility with different systems. - Low power consumption for energy-efficient designs.
Disadvantages: - Limited to quad 2-input multiplexing functionality. - Not suitable for high-voltage applications (>6V).
Working Principles
The SN74HC258PWT operates as a multiplexer, which means it selects one of the four input signals based on the control inputs. When G1 and G2 are set to specific logic levels, the corresponding input signal is routed to the output pin (Y). The Schmitt-trigger inputs ensure reliable switching even in the presence of noise.
Detailed Application Field Plans
The SN74HC258PWT finds applications in various digital systems, including but not limited to: - Data routing and selection in microcontrollers and microprocessors. - Address decoding in memory systems. - Signal multiplexing in communication systems. - Input selection in analog-to-digital converters (ADCs). - Control signal routing in industrial automation.
Detailed and Complete Alternative Models
Some alternative models that offer similar functionality to the SN74HC258PWT include: - CD4051B: 8-channel analog multiplexer/demultiplexer IC. - 74HC151: 8-input multiplexer IC. - 74LS157: Quad 2-line to 1-line data selector/multiplexer IC.
These alternatives can be considered based on specific requirements and system constraints.
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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací SN74HC258PWT v technických řešeních
Sure! Here are 10 common questions and answers related to the application of SN74HC258PWT:
Q: What is SN74HC258PWT? A: SN74HC258PWT is a multiplexer/demultiplexer IC (Integrated Circuit) that allows you to select one of eight data inputs and route it to a single output.
Q: What is the voltage supply range for SN74HC258PWT? A: The voltage supply range for SN74HC258PWT is typically between 2V and 6V.
Q: How many data inputs does SN74HC258PWT have? A: SN74HC258PWT has eight data inputs, labeled A0 to A7.
Q: Can I use SN74HC258PWT as a demultiplexer? A: Yes, SN74HC258PWT can be used as both a multiplexer and a demultiplexer.
Q: What is the maximum operating frequency of SN74HC258PWT? A: The maximum operating frequency of SN74HC258PWT is typically around 50 MHz.
Q: Does SN74HC258PWT have any built-in protection features? A: No, SN74HC258PWT does not have any built-in protection features. External protection components may be required depending on the application.
Q: Can I cascade multiple SN74HC258PWT ICs together? A: Yes, you can cascade multiple SN74HC258PWT ICs together to increase the number of inputs or outputs.
Q: What is the output current capability of SN74HC258PWT? A: The output current capability of SN74HC258PWT is typically around 6 mA.
Q: Can I use SN74HC258PWT in both digital and analog applications? A: SN74HC258PWT is primarily designed for digital applications, but it can also be used in some low-frequency analog applications.
Q: What package does SN74HC258PWT come in? A: SN74HC258PWT comes in a TSSOP (Thin Shrink Small Outline Package) with 16 pins.
Please note that these answers are general and may vary depending on the specific datasheet and manufacturer's specifications of SN74HC258PWT.