SN74AHCT126QDRQ1

Product Overview

• Category: Integrated Circuit (IC)
• Use: Buffer/Driver
• Characteristics: High-speed, CMOS logic level shifting, 3-state outputs
• 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: 4.5V to 5.5V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +125°C
• Propagation Delay Time: 6 ns (typical)
• Output Current: ±8 mA
• Input Capacitance: 3 pF (typical)

Detailed Pin Configuration

The SN74AHCT126QDRQ1 has a total of 14 pins, which are labeled as follows:

1. 1A - Input for buffer gate A
2. 1Y - Output for buffer gate A
3. GND - Ground
4. 2Y - Output for buffer gate B
5. 2A - Input for buffer gate B
6. 3A - Input for buffer gate C
7. 3Y - Output for buffer gate C
8. VCC - Positive power supply
9. 4A - Input for buffer gate D
10. 4Y - Output for buffer gate D
11. OE - Output Enable
12. NC - No Connection
13. NC - No Connection
14. GND - Ground

Functional Features

• Quad buffer gates with 3-state outputs
• High-speed operation
• CMOS technology for low power consumption
• Logic level shifting capability
• Output enable (OE) for controlling the outputs

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient data transfer - CMOS technology ensures low power consumption - 3-state outputs provide flexibility in connecting multiple devices

Disadvantages: - Limited output current may not be suitable for high-power applications - Input capacitance may affect signal integrity in certain scenarios

Working Principles

The SN74AHCT126QDRQ1 is a quad buffer gate with 3-state outputs. It operates by receiving input signals through the A, B, C, and D pins. These input signals are then buffered and amplified internally. The output signals can be enabled or disabled using the OE pin. When the OE pin is high, the outputs are enabled and reflect the input signals. Conversely, when the OE pin is low, the outputs are in a high-impedance state, effectively disconnecting them from the circuit.

Detailed Application Field Plans

The SN74AHCT126QDRQ1 is commonly used in various applications, including:

1. Data communication systems: It can be used to interface between different logic families or voltage levels, ensuring compatibility and reliable data transmission.
2. Microcontroller-based systems: It can act as a level shifter between the microcontroller and other peripheral devices, allowing seamless communication.
3. Industrial automation: It can be employed in control systems to buffer and drive signals between different components, such as sensors, actuators, and PLCs.
4. Automotive electronics: Its robust design and wide operating temperature range make it suitable for automotive applications, such as engine control units, infotainment systems, and body control modules.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the SN74AHCT126QDRQ1 include:

1. 74HC126: This is a popular alternative from the 74HC series, offering similar features and performance.
2. CD74HCT126E: This alternative from the CD74HCT series provides compatibility with TTL logic levels.
3. MC74ACT126N: This model from the MC74ACT series offers faster propagation delay times.

These alternatives can be considered based on specific requirements and availability in different markets.

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