CD74HCT126M

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Gate Buffer/Driver
• Characteristics: High-Speed, CMOS Technology
• Package: SOIC-14
• Essence: Quad Bus Buffer with 3-State Outputs
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 10ns (typical)
• Output Current: ±6mA
• Input Capacitance: 3.5pF (typical)

Detailed Pin Configuration

The CD74HCT126M has a total of 14 pins, which are assigned as follows:

1. Pin 1: 1A (Input A)
2. Pin 2: 1Y (Output A)
3. Pin 3: 2A (Input B)
4. Pin 4: 2Y (Output B)
5. Pin 5: 3A (Input C)
6. Pin 6: 3Y (Output C)
7. Pin 7: 4A (Input D)
8. Pin 8: 4Y (Output D)
9. Pin 9: GND (Ground)
10. Pin 10: 3OE (Output Enable for Outputs C and D)
11. Pin 11: 4OE (Output Enable for Outputs A and B)
12. Pin 12: NC (No Connection)
13. Pin 13: VCC (Positive Power Supply)
14. Pin 14: 2OE (Output Enable for Outputs A and B)

Functional Features

• Quad 3-State Buffer with Independent Output Enables
• High-Speed CMOS Technology for Fast Operation
• Buffered Inputs Improve Signal Integrity
• 3-State Outputs Allow Multiple Devices to Share a Bus
• Low Power Consumption

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient data transfer. - Buffered inputs enhance signal quality and reduce noise. - 3-state outputs enable bus sharing, optimizing resource utilization.

Disadvantages: - Limited output current may restrict use in certain applications. - Restricted operating temperature range (-40°C to +85°C) may limit usage in extreme environments.

Working Principles

The CD74HCT126M is a quad bus buffer that amplifies and buffers input signals. It operates on CMOS technology, which ensures high-speed performance while consuming low power. The device features independent output enables for each buffer, allowing control over the output state. When the output enable (OE) is low, the corresponding output is active, and when OE is high, the output is in a high-impedance state.

Detailed Application Field Plans

The CD74HCT126M is commonly used in various digital systems where buffering and signal amplification are required. Some typical application fields include:

1. Microprocessor Systems: The IC can be used to interface between microprocessors and peripheral devices, ensuring proper signal levels and minimizing noise interference.
2. Data Communication: It can be employed in communication systems to amplify and buffer signals during data transmission, improving signal integrity and reducing errors.
3. Industrial Automation: The device finds applications in industrial automation systems, providing buffering capabilities for sensor signals and control signals.
4. Automotive Electronics: The IC can be utilized in automotive electronics for signal conditioning and level shifting, enabling reliable communication between different components.

Detailed and Complete Alternative Models

1. SN74HCT126: Similar quad bus buffer with 3-state outputs, offered by Texas Instruments.
2. MC74HCT126A: Quad bus buffer with 3-state outputs, available from ON Semiconductor.
3. CD74HC125M: Quad bus buffer with 3-state outputs, manufactured by Texas Instruments.

These alternative models offer similar functionality and can be used as substitutes for the CD74HCT126M in various applications.

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