SN74HC126D

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Gate Buffer/Driver
• Characteristics: High-Speed, Non-Inverting, Tri-State Output
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Quad Bus Buffer Gate with 3-State Outputs
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 2V to 6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Operating Frequency: 50MHz
• Propagation Delay Time: 9ns (typical)
• Output Current: ±8mA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74HC126D has a total of 14 pins. The pin configuration is as follows:

1. 1A - Input 1 for buffer gate A
2. 1Y - Output 1 for buffer gate A
3. 2A - Input 2 for buffer gate A
4. 2Y - Output 2 for buffer gate A
5. GND - Ground
6. 3Y - Output 3 for buffer gate B
7. 3A - Input 3 for buffer gate B
8. 4Y - Output 4 for buffer gate B
9. 4A - Input 4 for buffer gate B
10. OE - Output Enable/Input for tri-state control
11. VCC - Positive Power Supply
12. NC - No Connection
13. 4B - Input 4 for buffer gate C
14. 4Y - Output 4 for buffer gate C

Functional Features

• Quad non-inverting buffer gates with 3-state outputs
• High-speed operation suitable for various applications
• 3-state outputs allow multiple devices to share a common bus
• Compatible with TTL (Transistor-Transistor Logic) and CMOS (Complementary Metal-Oxide-Semiconductor) logic levels

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient data transfer - Tri-state outputs provide flexibility in bus sharing applications - Compatibility with both TTL and CMOS logic levels allows for versatile integration

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

Working Principles

The SN74HC126D is a quad buffer gate with 3-state outputs. It operates by receiving input signals on the respective input pins and amplifying them to produce corresponding output signals. The tri-state outputs allow the device to be effectively disconnected from the bus when not in use, preventing interference with other devices connected to the same bus.

Detailed Application Field Plans

The SN74HC126D can be used in various applications, including but not limited to: - Data communication systems - Microprocessor-based systems - Memory address drivers - Bus interface circuits - Level shifting applications

Detailed and Complete Alternative Models

Some alternative models that serve similar functions to the SN74HC126D are: - SN74HC125D: Quad Bus Buffer Gate with 3-State Outputs - SN74HCT126D: Quad Bus Buffer Gate with 3-State Outputs (TTL compatible) - SN74LVC126AD: Quad Bus Buffer Gate with 3-State Outputs (Low Voltage CMOS)

These alternative models offer different voltage compatibility, speed, or power characteristics, allowing users to choose the most suitable option for their specific requirements.

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