SN74LS125AD

Product Overview

• Category: Integrated Circuit (IC)
• Use: Buffer/Line Driver
• Characteristics:
  • TTL (Transistor-Transistor Logic) technology
  • Quad 3-state buffer
  • Non-inverting outputs
  • High-speed operation
• Package: DIP (Dual In-line Package)
• Essence: Logic level translation and signal buffering
• Packaging/Quantity: Tube packaging, 25 pieces per tube

Specifications

• Supply Voltage: 4.75V to 5.25V
• Input Voltage: 0V to 5.25V
• Output Voltage: 0V to 5.25V
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 9ns (typical)
• Output Current: ±8mA
• Input Capacitance: 10pF
• Output Capacitance: 15pF

Detailed Pin Configuration

The SN74LS125AD has a 14-pin DIP package with the following pin configuration:

__ __ Y1 |1 \__/ 14| VCC A1 |2 13| Y4 B1 |3 12| A4 G1 |4 11| B4 Y2 |5 SN 10| G4 A2 |6 74 9| Y3 B2 |7 LS 8| A3 |_________|

Functional Features

• Quad 3-state buffer: The SN74LS125AD consists of four independent buffers with 3-state outputs.
• Non-inverting outputs: The buffer amplifies and reproduces the input signal without any inversion.
• High-speed operation: The IC operates at a high speed, making it suitable for applications requiring fast signal transmission.

Advantages and Disadvantages

Advantages: - TTL technology ensures compatibility with other TTL devices. - Non-inverting outputs simplify signal processing. - High-speed operation allows for efficient data transfer.

Disadvantages: - Limited output current may restrict its use in certain applications. - DIP package may not be suitable for space-constrained designs.

Working Principles

The SN74LS125AD is designed to buffer and amplify digital signals. It accepts logic level inputs and provides non-inverted outputs. The 3-state outputs allow the device to be effectively disconnected from the bus when not in use, preventing any interference or contention on the shared line.

Detailed Application Field Plans

The SN74LS125AD finds applications in various fields, including:

1. Microprocessor Systems: It can be used to interface between different logic families, ensuring proper signal translation and compatibility.
2. Data Communication: The IC can be employed in communication systems to buffer and amplify digital signals, enhancing signal integrity during transmission.
3. Industrial Automation: It can be utilized in control systems to isolate and amplify signals, enabling reliable communication between different components.
4. Test and Measurement Equipment: The SN74LS125AD can be integrated into test equipment to ensure accurate signal conditioning and isolation.

Detailed and Complete Alternative Models

1. SN74LS126AD: Similar to SN74LS125AD, but with 3-state inverted outputs.
2. SN74LS240N: Octal buffer/line driver with 3-state outputs.
3. SN74HC125N: Quad buffer/line driver with 3-state outputs, using CMOS technology.

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

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