SN74AHCT126PWG4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Buffer/Driver
• Characteristics: High-speed, CMOS logic level shifting, 3-state outputs
• Package: TSSOP-14
• Essence: Logic gate with four independent buffers/driver circuits
• 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
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 7 ns (typical)
• Output Current: ±8 mA
• Input Capacitance: 3 pF (typical)

Detailed Pin Configuration

The SN74AHCT126PWG4 has a TSSOP-14 package with the following pin configuration:

___________ OE |1 14| VCC A1 |2 13| Y1 B1 |3 12| A2 Y2 |4 11| B2 A3 |5 10| Y3 B3 |6 9| OE GND |7 8| Y4 ‾‾‾‾‾‾‾‾‾‾‾

Functional Features

• Four independent buffer/driver circuits
• 3-state outputs for bus-oriented applications
• High-speed operation suitable for various digital systems
• CMOS technology provides low power consumption
• Compatible with TTL inputs

Advantages and Disadvantages

Advantages

• High-speed operation allows for efficient data transfer
• CMOS technology ensures low power consumption
• 3-state outputs enable bus sharing and reduce conflicts
• Wide supply voltage range provides flexibility in different applications

Disadvantages

• Limited output current may not be suitable for high-power applications
• TSSOP package may require careful handling during assembly

Working Principles

The SN74AHCT126PWG4 is a buffer/driver IC that amplifies and shapes digital signals. It consists of four independent buffer circuits, each capable of driving a single line. The inputs are compatible with both CMOS and TTL logic levels, making it versatile for various digital systems.

The 3-state outputs allow the device to be used in bus-oriented applications, where multiple devices can share a common bus without causing conflicts. When the output enable (OE) pin is high, the outputs are in a high-impedance state, effectively disconnecting them from the bus.

The CMOS technology used in this IC ensures low power consumption while maintaining high-speed operation. This makes it suitable for battery-powered devices and other applications where power efficiency is crucial.

Detailed Application Field Plans

The SN74AHCT126PWG4 is commonly used in the following applications:

1. Data communication systems: The buffer/driver IC helps amplify and shape digital signals in communication interfaces, such as UART, SPI, and I2C.

2. Memory systems: It can be used to interface between memory modules and microcontrollers or processors, ensuring reliable data transfer.

3. Bus sharing systems: The 3-state outputs allow multiple devices to share a common bus, enabling efficient communication in systems like multiprocessor architectures.

4. Industrial automation: The IC finds application in control systems, where it helps interface between sensors, actuators, and the main controller.

5. Automotive electronics: Due to its wide supply voltage range and high-speed operation, it is suitable for various automotive applications, including infotainment systems and engine control units.

Detailed and Complete Alternative Models

1. SN74AHCT125PWG4: Similar to SN74AHCT126PWG4 but with 3-state outputs on the inputs instead of outputs.
2. SN74LVC126APW: Low-voltage CMOS buffer/driver IC with similar functionality but operates at a lower voltage range.
3. SN74HC126N: High-speed CMOS buffer/driver IC with TTL-compatible inputs and 3-state outputs.

These alternative models offer similar features and can be used as substitutes depending on specific requirements and availability.

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