SN74AHC126DR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Buffer/Driver
• Characteristics: High-speed, low-power, non-inverting
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Quad buffer/driver with 3-state outputs
• Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2 V to 5.5 V
• Input Voltage Range: 0 V to VCC
• Output Voltage Range: 0 V to VCC
• Maximum Operating Frequency: 50 MHz
• Output Current: ±8 mA
• Propagation Delay: 6 ns (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74AHC126DR has a total of 14 pins, which are assigned as follows:

1. 1OE (Output Enable) - Active LOW output enable input
2. 1A (Input A) - Data input for buffer 1
3. 1Y (Output Y) - Buffered output for buffer 1
4. GND (Ground) - Ground reference
5. 2Y (Output Y) - Buffered output for buffer 2
6. 2A (Input A) - Data input for buffer 2
7. 2OE (Output Enable) - Active LOW output enable input
8. VCC (Supply Voltage) - Positive supply voltage
9. 3OE (Output Enable) - Active LOW output enable input
10. 3A (Input A) - Data input for buffer 3
11. 3Y (Output Y) - Buffered output for buffer 3
12. 4Y (Output Y) - Buffered output for buffer 4
13. 4A (Input A) - Data input for buffer 4
14. GND (Ground) - Ground reference

Functional Features

• Quad non-inverting buffer/driver with 3-state outputs
• High-speed operation, suitable for various applications
• Low power consumption, ideal for battery-powered devices
• 3-state outputs allow multiple devices to share a common bus
• Output enable inputs provide control over the output state

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient data transfer - Low power consumption extends battery life in portable devices - 3-state outputs facilitate bus sharing among multiple devices - Compact SOIC package allows for space-saving designs

Disadvantages: - Limited output current may not be suitable for high-power applications - Operating temperature range may restrict usage in extreme environments

Working Principles

The SN74AHC126DR is a quad buffer/driver IC that amplifies and buffers digital signals. It operates by receiving data inputs (A) and providing buffered outputs (Y). The output enable (OE) inputs control the state of the outputs, allowing them to be either active or in a high-impedance state.

Detailed Application Field Plans

The SN74AHC126DR can be used in various applications, including but not limited to:

1. Microcontroller interfacing: It can be used to interface microcontrollers with other peripheral devices, such as sensors, displays, and memory modules.
2. Bus driving: The 3-state outputs make it suitable for driving buses in systems where multiple devices need to share a common communication line.
3. Level shifting: It can be employed to shift voltage levels between different logic families, ensuring compatibility between devices operating at different voltage levels.
4. Signal buffering: The IC can be utilized to buffer digital signals, preventing signal degradation and ensuring reliable transmission.

Detailed and Complete Alternative Models

1. SN74AHC125DR: Similar to SN74AHC126DR, but with 3-state outputs for all four buffers.
2. SN74LVC126ADR: Low-voltage version of the SN74AHC126DR, operating at a supply voltage range of 1.65 V to 3.6 V.
3. SN74HCT126N: A different logic family (HCT) with similar functionality, operating at a wider supply voltage range of 4.5 V to 5.5 V.

These alternative models offer similar features and can be considered as substitutes depending on specific requirements and compatibility considerations.

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