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SN74LS90DE4
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SN74LS90DE4

Product Overview

Category

SN74LS90DE4 belongs to the category of integrated circuits (ICs).

Use

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

Characteristics

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

Package

SN74LS90DE4 is available in a 14-pin dual in-line package (DIP).

Essence

The essence of SN74LS90DE4 lies in its ability to accurately count and divide input signals in digital circuits.

Packaging/Quantity

SN74LS90DE4 is typically packaged in reels or tubes, with each reel or tube containing a specific quantity of ICs.

Specifications

  • Supply Voltage: 4.75V to 5.25V
  • Operating Temperature Range: -40°C to +85°C
  • Maximum Clock Frequency: 30 MHz
  • Counting Range: 0 to 9
  • Output Current: 8 mA

Detailed Pin Configuration

  1. VCC: Positive power supply
  2. GND: Ground reference
  3. A: Input pin for least significant bit (LSB)
  4. B: Input pin for second least significant bit
  5. C: Input pin for third least significant bit
  6. D: Input pin for most significant bit (MSB)
  7. RCO: Ripple carry output
  8. QD: Output pin for least significant bit (LSB)
  9. QC: Output pin for second least significant bit
  10. QB: Output pin for third least significant bit
  11. QA: Output pin for most significant bit (MSB)
  12. CLK: Clock input
  13. MR: Master reset input
  14. VCC: Positive power supply

Functional Features

  • Asynchronous reset capability
  • Decade counting mode
  • Ripple carry output for cascading multiple counters
  • High-speed operation for real-time applications
  • Low power consumption for energy-efficient designs

Advantages and Disadvantages

Advantages

  • Accurate counting and dividing functionality
  • Wide operating voltage range allows compatibility with various systems
  • Compact package size enables space-saving designs
  • Reliable performance ensures long-term operation

Disadvantages

  • Limited counting range (0 to 9)
  • Requires an external clock signal for operation

Working Principles

SN74LS90DE4 operates based on the principle of synchronous sequential logic. It counts input pulses and generates corresponding output signals based on the input configuration. The counter can be reset asynchronously using the MR pin, allowing for easy initialization.

Detailed Application Field Plans

SN74LS90DE4 finds applications in various digital electronic systems, including: 1. Frequency dividers 2. Digital clocks 3. Event counters 4. Industrial automation systems 5. Traffic light controllers

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to SN74LS90DE4 include: 1. CD4017BE 2. MC14017B 3. HEF4017BP 4. HCF4017BE 5. 74HC4017D

These alternative models provide comparable counting and dividing capabilities, but may differ in terms of package type, power consumption, or other specifications.

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Maglista ng 10 karaniwang tanong at sagot na nauugnay sa aplikasyon ng SN74LS90DE4 sa mga teknikal na solusyon

Sure! Here are 10 common questions and answers related to the application of SN74LS90DE4 in technical solutions:

  1. Q: What is SN74LS90DE4? A: SN74LS90DE4 is a decade counter/divider integrated circuit (IC) that can be used in various digital applications.

  2. Q: What is the purpose of SN74LS90DE4? A: SN74LS90DE4 is designed to count pulses and divide frequencies, making it useful for tasks like frequency division, timekeeping, and event sequencing.

  3. Q: How many outputs does SN74LS90DE4 have? A: SN74LS90DE4 has four outputs labeled Q0, Q1, Q2, and Q3, which represent different binary states based on the input pulses.

  4. Q: What is the maximum clock frequency supported by SN74LS90DE4? A: The maximum clock frequency supported by SN74LS90DE4 is typically around 42 MHz.

  5. Q: Can SN74LS90DE4 be cascaded to count beyond 9? A: Yes, SN74LS90DE4 can be cascaded with other counters to count beyond 9, allowing for larger counting ranges.

  6. Q: What is the power supply voltage range for SN74LS90DE4? A: SN74LS90DE4 operates with a power supply voltage range of 4.75V to 5.25V.

  7. Q: Does SN74LS90DE4 require external components for operation? A: Yes, SN74LS90DE4 requires external components such as resistors and capacitors for proper operation and stability.

  8. Q: Can SN74LS90DE4 be used in both synchronous and asynchronous modes? A: Yes, SN74LS90DE4 can be used in both synchronous and asynchronous modes depending on the application requirements.

  9. Q: What is the typical power consumption of SN74LS90DE4? A: The typical power consumption of SN74LS90DE4 is around 10mW.

  10. Q: Are there any specific precautions to consider when using SN74LS90DE4? A: It is important to ensure proper decoupling and grounding techniques while using SN74LS90DE4 to minimize noise and ensure reliable operation.

Please note that these answers are general and may vary based on specific datasheet specifications and application requirements.