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SN74LS90NE4
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SN74LS90NE4

Product Overview

Category

SN74LS90NE4 belongs to the category of integrated circuits (ICs).

Use

This product is commonly used in digital electronics for counting and dividing purposes.

Characteristics

  • High-speed operation
  • Low power consumption
  • Wide operating voltage range
  • Compact package size

Package

SN74LS90NE4 is available in a 14-pin dual in-line package (DIP).

Essence

The essence of SN74LS90NE4 lies in its ability to perform accurate and efficient counting and dividing functions in electronic circuits.

Packaging/Quantity

SN74LS90NE4 is typically packaged in reels or tubes, with quantities varying depending on the supplier.

Specifications

  • Supply Voltage: 4.75V to 5.25V
  • Operating Temperature Range: -40°C to +85°C
  • Maximum Clock Frequency: 30MHz
  • Output Current: ±8mA
  • Logic Family: LS-TTL

Detailed Pin Configuration

  1. CLK (Clock Input)
  2. GND (Ground)
  3. Q0 (Output Bit 0)
  4. Q1 (Output Bit 1)
  5. Q2 (Output Bit 2)
  6. Q3 (Output Bit 3)
  7. VCC (Supply Voltage)
  8. RCO (Ripple Carry Output)
  9. MR (Master Reset)
  10. QA (Output A)
  11. QB (Output B)
  12. QC (Output C)
  13. QD (Output D)
  14. VCC (Supply Voltage)

Functional Features

  • Asynchronous Master Reset (MR) input for resetting the counter
  • Ripple Carry Output (RCO) for cascading multiple counters
  • Four individual outputs (QA, QB, QC, QD) representing the binary count
  • Decoded outputs (Q0, Q1, Q2, Q3) for BCD (Binary Coded Decimal) representation

Advantages and Disadvantages

Advantages

  • High-speed operation enables efficient counting in digital circuits
  • Low power consumption helps conserve energy
  • Wide operating voltage range allows compatibility with various systems
  • Compact package size facilitates integration into electronic designs

Disadvantages

  • Limited maximum clock frequency may restrict its use in high-frequency applications
  • Output current limitations may require additional buffering for driving external loads

Working Principles

SN74LS90NE4 is a synchronous decade counter/divider that operates on the principle of binary counting. It counts from 0 to 9 and then resets back to 0. The clock input (CLK) triggers the counter to increment by one on each rising edge. The Master Reset (MR) input can be used to reset the counter to 0 at any time.

Detailed Application Field Plans

SN74LS90NE4 finds applications in various fields, including: 1. Digital frequency dividers 2. Event counters 3. Timekeeping circuits 4. Industrial automation systems 5. Communication equipment

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to SN74LS90NE4 are: 1. CD4017BE 2. MC14017BCL 3. HEF4017BP 4. HCF4017BE 5. MM74C90N

These alternatives can be considered based on specific requirements and availability.

Word count: 510 words

技術ソリューションにおける SN74LS90NE4 の適用に関連する 10 件の一般的な質問と回答をリストします。

Sure! Here are 10 common questions and answers related to the application of SN74LS90NE4 in technical solutions:

  1. Q: What is SN74LS90NE4? A: SN74LS90NE4 is a decade counter and divider integrated circuit (IC) that can be used in various digital applications.

  2. Q: What is the purpose of SN74LS90NE4? A: The purpose of SN74LS90NE4 is to count and divide input clock pulses by 10, making it useful for frequency division and timekeeping applications.

  3. Q: How many outputs does SN74LS90NE4 have? A: SN74LS90NE4 has four outputs labeled Q0, Q1, Q2, and Q3, which represent the binary count from 0 to 9.

  4. Q: Can SN74LS90NE4 be cascaded to count beyond 9? A: Yes, SN74LS90NE4 can be cascaded with other decade counters to count beyond 9 and create larger counting sequences.

  5. Q: What is the maximum clock frequency supported by SN74LS90NE4? A: SN74LS90NE4 can typically handle clock frequencies up to 25 MHz.

  6. Q: Does SN74LS90NE4 require external components to function? A: Yes, SN74LS90NE4 requires external resistors and capacitors to set the clock frequency and provide power supply decoupling.

  7. Q: Can SN74LS90NE4 operate at different voltage levels? A: SN74LS90NE4 operates at a supply voltage range of 4.75V to 5.25V, which is compatible with standard TTL logic levels.

  8. Q: What is the power consumption of SN74LS90NE4? A: The power consumption of SN74LS90NE4 is typically around 10mW.

  9. Q: Can SN74LS90NE4 be used in both synchronous and asynchronous applications? A: Yes, SN74LS90NE4 can be used in both synchronous and asynchronous applications depending on the clock input configuration.

  10. Q: What are some common applications of SN74LS90NE4? A: Some common applications of SN74LS90NE4 include frequency dividers, digital clocks, event counters, and timekeeping circuits.

Please note that these answers are general and may vary depending on specific circuit designs and requirements.