SN74AHC125DE4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Buffer/Driver
• Characteristics: High-speed, low-power, non-inverting
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Quad bus buffer gate with 3-state outputs
• 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
• Maximum Operating Frequency: 50 MHz
• Number of Inputs: 4
• Number of Outputs: 4
• Output Drive Capability: ±24 mA
• Propagation Delay Time: 6 ns (max)

Detailed Pin Configuration

The SN74AHC125DE4 has a total of 14 pins, which are arranged as follows:

1. Pin 1: Output 1 (Y1)
2. Pin 2: Input 1 (A1)
3. Pin 3: Enable 1 (OE1)
4. Pin 4: Ground (GND)
5. Pin 5: Output 2 (Y2)
6. Pin 6: Input 2 (A2)
7. Pin 7: Enable 2 (OE2)
8. Pin 8: VCC (Supply Voltage)
9. Pin 9: Output 3 (Y3)
10. Pin 10: Input 3 (A3)
11. Pin 11: Enable 3 (OE3)
12. Pin 12: Output 4 (Y4)
13. Pin 13: Input 4 (A4)
14. Pin 14: Enable 4 (OE4)

Functional Features

• Non-inverting buffer/driver with 3-state outputs
• High-speed operation, suitable for applications requiring fast signal propagation
• Low power consumption, making it ideal for battery-powered devices
• 3-state outputs allow multiple devices to share a common bus without interference

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient data transfer - Low power consumption extends battery life in portable devices - 3-state outputs provide flexibility in bus sharing applications

Disadvantages: - Limited output drive capability may not be suitable for high-current applications - Propagation delay time may introduce timing issues in certain scenarios

Working Principles

The SN74AHC125DE4 is a quad bus buffer gate that amplifies and drives input signals to the output pins. It operates as a non-inverting buffer, meaning the output signal follows the input signal's logic level. The 3-state outputs allow the device to be effectively disconnected from the bus when not in use, preventing signal interference.

Detailed Application Field Plans

The SN74AHC125DE4 is commonly used in various digital systems, including:

1. Microcontrollers: It can be used to interface microcontrollers with other devices, such as sensors or actuators, by buffering and driving the signals.
2. Communication Systems: It is suitable for level shifting and signal buffering in communication interfaces like UART, SPI, or I2C.
3. Memory Systems: It can be utilized in memory modules to amplify and drive address or data signals.
4. Industrial Control Systems: It finds application in industrial control systems for buffering and driving control signals between different components.

Detailed and Complete Alternative Models

1. SN74AHC125D: Similar to SN74AHC125DE4 but available in a different package (SOIC-14).
2. SN74LVC125A: A similar quad buffer gate with 3-state outputs, but operates at a lower voltage range (1.65 V to 5.5 V).
3. SN74HC125: A quad buffer gate with 3-state outputs, but operates at a higher voltage range (2 V to 6 V).

These alternative models offer similar functionality and can be considered as replacements for the SN74AHC125DE4 based on specific requirements.

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