SN74LS126AD

Product Overview

Category

SN74LS126AD belongs to the category of integrated circuits (ICs), specifically a quad bus buffer gate with 3-state outputs.

Use

This IC is commonly used in digital electronics for buffering and driving signals between different parts of a circuit. It helps in isolating different sections of a circuit, preventing interference and ensuring proper signal transmission.

Characteristics

• Quad buffer gate with 3-state outputs
• Low power consumption
• High-speed operation
• Wide operating voltage range
• TTL compatible inputs
• Open-collector outputs
• Schottky-clamped for improved noise immunity

Package

SN74LS126AD is available in a 14-pin dual in-line package (DIP). The DIP package provides easy handling and compatibility with standard breadboards and PCBs.

Essence

The essence of SN74LS126AD lies in its ability to buffer and drive signals effectively, ensuring reliable communication between different components of a digital circuit.

Packaging/Quantity

SN74LS126AD is typically packaged in tubes or reels, containing a specific quantity of ICs per package. The exact packaging and quantity may vary depending on the manufacturer and supplier.

Specifications

• Supply Voltage: 4.75V to 5.25V
• Input Voltage: 0V to 5V
• Output Voltage: 0V to 5V
• Operating Temperature Range: -40°C to +85°C
• Maximum Propagation Delay: 15ns
• Maximum Quiescent Current: 8mA

Detailed Pin Configuration

SN74LS126AD has a total of 14 pins, each serving a specific purpose. The pin configuration is as follows:

1. GND (Ground)
2. A1 (Input A1)
3. Y1 (Output Y1)
4. A2 (Input A2)
5. Y2 (Output Y2)
6. A3 (Input A3)
7. Y3 (Output Y3)
8. G1 (Enable Input G1)
9. Y4 (Output Y4)
10. VCC (Supply Voltage)
11. GND (Ground)
12. A4 (Input A4)
13. Y5 (Output Y5)
14. G2 (Enable Input G2)

Functional Features

• Quad buffer gate: SN74LS126AD consists of four independent buffer gates, allowing simultaneous buffering of multiple signals.
• 3-state outputs: The IC provides 3-state outputs, which can be enabled or disabled using the G1 and G2 enable inputs.
• TTL compatibility: The inputs are compatible with TTL logic levels, ensuring seamless integration with other TTL devices.
• Open-collector outputs: The outputs are open-collector, providing flexibility in connecting to different types of loads.
• Schottky-clamped: The IC is schottky-clamped, enhancing noise immunity and reducing signal distortion.

Advantages and Disadvantages

Advantages

• High-speed operation allows for efficient signal transmission.
• Low power consumption makes it suitable for battery-powered applications.
• Wide operating voltage range ensures compatibility with various systems.
• 3-state outputs provide flexibility in controlling signal flow.
• Schottky-clamping improves noise immunity, enhancing overall performance.

Disadvantages

• Limited number of buffer gates per IC may require multiple ICs for complex circuits.
• Open-collector outputs may require additional pull-up resistors for certain applications.

Working Principles

SN74LS126AD operates by receiving input signals on the A1-A4 pins. These signals are buffered and amplified internally, and the resulting output signals appear on the corresponding Y1-Y5 pins. The G1 and G2 enable inputs control the 3-state outputs, allowing the user to enable or disable the output signals as needed.

Detailed Application Field Plans

SN74LS126AD finds applications in various digital systems, including but not limited to: - Microcontrollers and microprocessors - Data communication systems - Memory interfacing circuits - Address decoding circuits - Bus drivers and receivers - Logic level shifting circuits

Detailed and Complete Alternative Models

There are several alternative models available that serve similar functions to SN74LS126AD. Some popular alternatives include: - 74HC126: CMOS quad buffer gate with 3-state outputs - CD4050: Hex non-inverting buffer with high-voltage capability - SN74LS07: Hex buffer/driver with open-collector outputs - 74HCT125: Quad buffer gate with 3-state outputs and Schmitt-trigger inputs

These alternative models offer similar functionality and can be used as substitutes depending on specific requirements and compatibility with the existing circuitry.

In conclusion, SN74LS126AD is a quad bus buffer gate IC widely used in digital electronics for signal buffering and driving purposes. Its high