MM74HC125N

Product Overview

• Category: Integrated Circuit (IC)
• Use: Buffer/Line Driver
• Characteristics: High-speed, Non-Inverting, Quad 3-State
• Package: DIP (Dual In-line Package)
• Essence: Logic Gate IC
• Packaging/Quantity: Tube, 25 pieces per tube

Specifications

• Supply Voltage Range: 2V to 6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Operating Frequency: 54 MHz
• Number of Channels: 4
• Output Current: ±6 mA
• Propagation Delay Time: 9 ns (typical)

Detailed Pin Configuration

The MM74HC125N has a total of 14 pins. The pin configuration is as follows:

1. Pin 1: Output Enable (OE) for Channel 1
2. Pin 2: Input (A) for Channel 1
3. Pin 3: Output (Y) for Channel 1
4. Pin 4: Ground (GND)
5. Pin 5: Output (Y) for Channel 2
6. Pin 6: Input (B) for Channel 2
7. Pin 7: Output Enable (OE) for Channel 2
8. Pin 8: VCC (Positive Power Supply)
9. Pin 9: Output Enable (OE) for Channel 3
10. Pin 10: Input (A) for Channel 3
11. Pin 11: Output (Y) for Channel 3
12. Pin 12: Output (Y) for Channel 4
13. Pin 13: Input (B) for Channel 4
14. Pin 14: Output Enable (OE) for Channel 4

Functional Features

• Non-Inverting Buffer: The MM74HC125N is a non-inverting buffer, meaning the output signal follows the input signal without any inversion.
• High-Speed Operation: With a maximum operating frequency of 54 MHz, this IC is suitable for high-speed applications.
• Quad 3-State Outputs: The IC has four independent 3-state outputs, allowing multiple signals to be controlled by a single enable pin.

Advantages and Disadvantages

Advantages

• High-speed operation enables efficient data transmission.
• Non-inverting nature simplifies signal processing.
• 3-state outputs provide flexibility in controlling multiple signals.

Disadvantages

• Limited output current may not be suitable for driving heavy loads.
• Restricted supply voltage range (2V to 6V) may limit compatibility with certain systems.

Working Principles

The MM74HC125N operates based on the principles of digital logic gates. It takes input signals from the A and B pins and produces corresponding non-inverted output signals at the Y pins. The output enable (OE) pins control the state of the outputs, allowing them to be either active or in a high-impedance state.

Detailed Application Field Plans

The MM74HC125N finds applications in various fields, including:

1. Digital Communication Systems: Used for signal buffering and line driving in communication systems.
2. Microcontroller Interfacing: Enables interfacing between microcontrollers and external devices by providing signal level shifting and buffering.
3. Data Acquisition Systems: Facilitates signal conditioning and amplification in data acquisition systems.
4. Industrial Automation: Employed in control systems for signal buffering and driving actuators.

Detailed and Complete Alternative Models

Some alternative models to the MM74HC125N include:

1. SN74HC125N: Similar specifications and functionality, but manufactured by Texas Instruments.
2. CD74HC125E: Equivalent IC from a different manufacturer, Texas Instruments.
3. 74HCT125N: A variant with TTL compatibility and increased voltage tolerance.

(Note: The above list is not exhaustive and other alternative models may exist.)

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