MC74HC126ADTR2G

Product Overview

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

Specifications

• Supply Voltage Range: 2V to 6V
• High-Level Input Voltage: 2V
• Low-Level Input Voltage: 0.8V
• High-Level Output Voltage: 5.2V
• Low-Level Output Voltage: 0.4V
• Maximum Operating Frequency: 50MHz
• Maximum Propagation Delay: 15ns
• Maximum Quiescent Current: 20µA

Detailed Pin Configuration

The MC74HC126ADTR2G has a TSSOP-14 package with the following pin configuration:

1. 1Y - Output 1
2. 1A - Input 1
3. 1B - Input 2
4. GND - Ground
5. 2B - Input 3
6. 2A - Input 4
7. 2Y - Output 2
8. NC - No Connection
9. 3Y - Output 3
10. 3A - Input 5
11. 3B - Input 6
12. VCC - Power Supply
13. 4B - Input 7
14. 4A - Input 8

Functional Features

The MC74HC126ADTR2G is a quad bus buffer with 3-state outputs. It is designed using high-speed CMOS technology, allowing for fast switching times and low power consumption. The device operates within a supply voltage range of 2V to 6V, making it suitable for various applications.

The 3-state outputs provide flexibility by allowing the outputs to be disabled, effectively disconnecting them from the bus. This feature is particularly useful in multi-device systems where multiple buffers may share a common bus.

Advantages and Disadvantages

Advantages: - High-speed operation - Low power consumption - 3-state outputs for bus sharing - Wide supply voltage range

Disadvantages: - Limited maximum operating frequency (50MHz) - Propagation delay of up to 15ns

Working Principles

The MC74HC126ADTR2G operates based on CMOS technology, which utilizes complementary pairs of MOSFETs to achieve high-speed switching. The inputs control the state of the outputs, either driving them to a high or low logic level or disconnecting them from the bus using the 3-state feature.

When the inputs are at a high logic level, the corresponding outputs will also be driven to a high logic level. Conversely, when the inputs are at a low logic level, the outputs will be driven to a low logic level. When the 3-state control input is activated, the outputs are effectively disconnected from the bus, allowing other devices to drive the bus lines.

Detailed Application Field Plans

The MC74HC126ADTR2G can be used in various applications that require buffering and driving of digital signals. Some potential application fields include:

1. Microcontroller Interfacing: The device can be used to interface microcontrollers with external devices, such as sensors, actuators, or displays. It provides signal buffering and driving capabilities, ensuring reliable communication between the microcontroller and the external components.

2. Data Communication Systems: In data communication systems, the MC74HC126ADTR2G can be used to buffer and drive signals between different modules or subsystems. It helps maintain signal integrity and prevents signal degradation during transmission.

3. Memory Systems: The device can be employed in memory systems, such as RAM or ROM interfaces. It ensures proper signal levels and minimizes noise interference, improving the overall performance and reliability of the memory system.

4. Industrial Control Systems: In industrial control systems, the MC74HC126ADTR2G can be utilized to buffer and drive signals between various control modules. It helps maintain signal integrity in harsh industrial environments, ensuring accurate and reliable control of machinery and processes.

Detailed and Complete Alternative Models

1. SN74HC126N: This is a similar quad bus buffer with 3-state outputs, but it comes in a DIP-14 package instead of TSSOP-14.
2. CD74HC126E: Another alternative, this device also offers quad bus buffering with 3-state outputs, but it comes in a PDIP-14 package.
3. 74HCT126: This model is compatible with TTL logic levels and provides similar functionality to the MC74HC126ADTR2G. It comes in various package options, including SOIC-14 and PDIP-14