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MC74HCT259ADG
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MC74HCT259ADG

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Digital multiplexer/decoder
  • Characteristics:
    • High-speed operation
    • Wide operating voltage range
    • Low power consumption
    • Schmitt trigger inputs for noise immunity
  • Package: SOIC-16
  • Essence: The MC74HCT259ADG is a high-speed CMOS integrated circuit that functions as an 8-bit addressable latch or demultiplexer. It is commonly used in digital systems for data routing and selection purposes.
  • Packaging/Quantity: The MC74HCT259ADG is typically sold in reels of 250 units.

Specifications

  • Supply Voltage Range: 4.5V to 5.5V
  • Input Voltage Range: 0V to VCC
  • Operating Temperature Range: -40°C to +85°C
  • Output Current: ±25mA
  • Propagation Delay: 15ns (max)
  • Latch-Up Performance: 300mA

Pin Configuration

The MC74HCT259ADG has a total of 16 pins, which are assigned specific functions as follows:

  1. GND (Ground)
  2. D0 (Data Input 0)
  3. D1 (Data Input 1)
  4. D2 (Data Input 2)
  5. D3 (Data Input 3)
  6. D4 (Data Input 4)
  7. D5 (Data Input 5)
  8. D6 (Data Input 6)
  9. D7 (Data Input 7)
  10. MR (Master Reset)
  11. SH/LD (Shift/Load)
  12. CLK (Clock)
  13. Q0 (Output 0)
  14. Q1 (Output 1)
  15. Q2 (Output 2)
  16. VCC (Positive Supply Voltage)

Functional Features

The MC74HCT259ADG offers the following functional features:

  • Addressable latch or demultiplexer operation
  • Parallel-to-serial data conversion
  • Serial-to-parallel data conversion
  • Cascadable for larger applications
  • Schmitt trigger inputs for improved noise immunity

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient data processing - Wide operating voltage range provides flexibility in various digital systems - Low power consumption helps conserve energy - Schmitt trigger inputs enhance noise immunity, ensuring reliable operation

Disadvantages: - Limited output current may restrict certain applications requiring higher current levels - Propagation delay of 15ns (max) may affect real-time applications with strict timing requirements

Working Principles

The MC74HCT259ADG operates based on the principles of latch and demultiplexing. It can function as an addressable latch, storing data at the selected address, or as a demultiplexer, routing the stored data to the corresponding output. The shift/load input determines the mode of operation, while the clock input controls the shifting of data.

Detailed Application Field Plans

The MC74HCT259ADG finds applications in various digital systems, including but not limited to:

  1. Data routing and selection in microcontrollers
  2. Address decoding in memory systems
  3. Multiplexing/demultiplexing in communication systems
  4. Control signal generation in industrial automation
  5. Addressable storage in digital displays

Detailed and Complete Alternative Models

  1. SN74HCT259N by Texas Instruments
  2. CD74HCT259E by Texas Instruments
  3. 74HCT259D by NXP Semiconductors
  4. HEF45259BP by NXP Semiconductors
  5. 74HCT259M by Fairchild Semiconductor

These alternative models offer similar functionality to the MC74HCT259ADG and can be considered as replacements based on specific requirements.

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Maglista ng 10 karaniwang tanong at sagot na nauugnay sa aplikasyon ng MC74HCT259ADG sa mga teknikal na solusyon

Sure! Here are 10 common questions and answers related to the application of MC74HCT259ADG in technical solutions:

  1. Q: What is MC74HCT259ADG? A: MC74HCT259ADG is a high-speed CMOS 8-bit addressable latch with 3-state outputs, commonly used in digital circuits.

  2. Q: What are the key features of MC74HCT259ADG? A: Some key features include 8-bit parallel input/output, 3-state outputs, latch enable, and clear inputs.

  3. Q: How can MC74HCT259ADG be used in technical solutions? A: MC74HCT259ADG can be used for address decoding, data storage, multiplexing, and demultiplexing applications.

  4. Q: What is the maximum operating frequency of MC74HCT259ADG? A: The maximum operating frequency of MC74HCT259ADG is typically around 50 MHz.

  5. Q: What is the voltage supply range for MC74HCT259ADG? A: MC74HCT259ADG operates within a voltage supply range of 4.5V to 5.5V.

  6. Q: Can MC74HCT259ADG handle both TTL and CMOS logic levels? A: Yes, MC74HCT259ADG is compatible with both TTL and CMOS logic levels.

  7. Q: Does MC74HCT259ADG have any built-in protection features? A: Yes, MC74HCT259ADG has built-in protection against electrostatic discharge (ESD) and excessive power dissipation.

  8. Q: What is the output current capability of MC74HCT259ADG? A: MC74HCT259ADG can source or sink up to 6 mA of current per output pin.

  9. Q: Can MC74HCT259ADG be cascaded to increase the number of addressable latches? A: Yes, multiple MC74HCT259ADG ICs can be cascaded together to increase the number of addressable latches.

  10. Q: Are there any recommended applications or circuits that use MC74HCT259ADG? A: MC74HCT259ADG is commonly used in microprocessor systems, memory address decoding, data multiplexing, and general-purpose digital logic circuits.

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