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SN74HC253N
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SN74HC253N

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Multiplexer/Demultiplexer
  • Characteristics: High-speed, low-power consumption
  • Package: DIP (Dual In-line Package)
  • Essence: Logic gate with two 4-input multiplexers/demultiplexers
  • Packaging/Quantity: Available in tubes of 25 or reels of 2,000

Specifications

  • Supply Voltage Range: 2V to 6V
  • Input Voltage Range: 0V to VCC
  • Output Voltage Range: 0V to VCC
  • Operating Temperature Range: -40°C to +85°C
  • Propagation Delay Time: 15ns (typical)
  • Maximum Clock Frequency: 50MHz

Detailed Pin Configuration

The SN74HC253N has a total of 16 pins. The pin configuration is as follows:

  1. A1: Multiplexer/Demultiplexer Select Input A
  2. B1: Multiplexer/Demultiplexer Select Input B
  3. C1: Multiplexer/Demultiplexer Select Input C
  4. D1: Multiplexer/Demultiplexer Select Input D
  5. GND: Ground
  6. Y1: Multiplexer Output / Demultiplexer Input 1
  7. Y2: Multiplexer Output / Demultiplexer Input 2
  8. Y3: Multiplexer Output / Demultiplexer Input 3
  9. Y4: Multiplexer Output / Demultiplexer Input 4
  10. VCC: Positive Power Supply
  11. OE: Output Enable Input
  12. A2: Multiplexer/Demultiplexer Select Input A
  13. B2: Multiplexer/Demultiplexer Select Input B
  14. C2: Multiplexer/Demultiplexer Select Input C
  15. D2: Multiplexer/Demultiplexer Select Input D
  16. GND: Ground

Functional Features

  • Dual 4-input multiplexer/demultiplexer in a single IC
  • High-speed operation allows for efficient data processing
  • Low-power consumption makes it suitable for battery-powered devices
  • Output enable input for easy control of output states
  • Wide supply voltage range provides flexibility in various applications

Advantages and Disadvantages

Advantages: - Compact design with multiple functions in a single IC - High-speed operation enhances overall system performance - Low-power consumption prolongs battery life in portable devices

Disadvantages: - Limited number of inputs and outputs may restrict certain applications - Sensitivity to voltage fluctuations may require additional voltage regulation circuitry

Working Principles

The SN74HC253N is a multiplexer/demultiplexer IC that allows the selection of one of four inputs to be routed to the output. It operates based on the logic levels applied to the select inputs (A1, B1, C1, D1 and A2, B2, C2, D2). The selected input is then transmitted to the corresponding output (Y1, Y2, Y3, Y4).

The output enable input (OE) controls the state of the outputs. When OE is low, the outputs are enabled and reflect the selected input. Conversely, when OE is high, the outputs are disabled and remain in a high-impedance state.

Detailed Application Field Plans

The SN74HC253N can be used in various applications, including:

  1. Data Multiplexing: Selecting and transmitting data from multiple sources to a single output.
  2. Address Decoding: Choosing specific memory locations based on address inputs.
  3. Signal Routing: Directing signals to different paths based on control inputs.
  4. Data Demultiplexing: Distributing data from a single input to multiple outputs.

Detailed and Complete Alternative Models

  1. CD74HC253E: Similar functionality with slightly different pin configuration.
  2. SN74HCT253N: Compatible with higher voltage levels (up to 6V).
  3. MC74HC253N: Offers improved noise immunity and latch-up performance.

These alternative models provide similar features and can be used as substitutes for the SN74HC253N in various applications.

Word count: 525 words

Seznam 10 běžných otázek a odpovědí souvisejících s aplikací SN74HC253N v technických řešeních

Sure! Here are 10 common questions and answers related to the application of SN74HC253N in technical solutions:

  1. Q: What is SN74HC253N? A: SN74HC253N is a dual 4-input multiplexer with common select inputs. It is a commonly used integrated circuit (IC) in digital electronics.

  2. Q: What is the purpose of SN74HC253N? A: SN74HC253N is used to select one of four data inputs based on the select inputs, allowing for data routing and multiplexing in various applications.

  3. Q: What is the voltage range supported by SN74HC253N? A: SN74HC253N supports a voltage range of 2V to 6V, making it compatible with both TTL and CMOS logic levels.

  4. Q: How many select inputs does SN74HC253N have? A: SN74HC253N has two select inputs, which determine the output based on the combination of their states.

  5. Q: What is the maximum operating frequency of SN74HC253N? A: The maximum operating frequency of SN74HC253N is typically around 50 MHz, making it suitable for high-speed digital applications.

  6. Q: Can SN74HC253N be used as a demultiplexer? A: No, SN74HC253N is specifically designed as a multiplexer and cannot be directly used as a demultiplexer.

  7. Q: What is the power supply requirement for SN74HC253N? A: SN74HC253N requires a power supply voltage of 2V to 6V, with a recommended operating voltage of 5V.

  8. Q: Does SN74HC253N have any built-in protection features? A: SN74HC253N does not have built-in protection features, so external measures should be taken to prevent voltage spikes or ESD damage.

  9. Q: Can SN74HC253N handle analog signals? A: No, SN74HC253N is a digital multiplexer and is designed to handle digital signals only.

  10. Q: What are some common applications of SN74HC253N? A: SN74HC253N is commonly used in data routing, signal selection, address decoding, and general-purpose multiplexing applications.

Please note that these answers are general and may vary depending on specific use cases and requirements.