SN74LVC125APWG4

Overview

• Category: Integrated Circuit (IC)
• Use: Buffer/Driver
• Characteristics:
  • Low-voltage CMOS technology
  • Quad bus buffer gates
  • High-speed operation
  • Wide voltage range
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: Logic Level Translator
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 1.65V 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: 3.8ns (typical)
• Output Drive Capability: ±24mA
• ESD Protection: >2000V (Human Body Model)

Pin Configuration

The SN74LVC125APWG4 has a 14-pin TSSOP package with the following pin configuration:

___________ OE | 1 14 | VCC A1 | 2 13 | Y1 B1 | 3 12 | A4 Y2 | 4 11 | B4 A2 | 5 10 | Y4 B2 | 6 9 | GND Y3 | 7 8 | A3 ‾‾‾‾‾‾‾‾‾‾‾

Functional Features

• Quad bus buffer gates for voltage level translation
• Allows interfacing between devices operating at different voltage levels
• Enables bidirectional data flow
• Provides high-speed signal transmission
• Supports wide voltage range operation

Advantages and Disadvantages

Advantages: - Low-voltage CMOS technology ensures low power consumption - High-speed operation allows for efficient data transfer - Wide voltage range compatibility enhances versatility - ESD protection safeguards against electrostatic discharge

Disadvantages: - Limited output drive capability compared to some other buffer/driver ICs - Not suitable for applications requiring high current output

Working Principles

The SN74LVC125APWG4 is a logic level translator that facilitates communication between devices operating at different voltage levels. It consists of four independent buffer gates, each capable of translating signals from one voltage level to another. The input voltage range extends from 0V to the supply voltage (VCC), allowing compatibility with various logic families.

When the Output Enable (OE) pin is low, the device is enabled, and the input signals are transferred to the corresponding output pins. In this state, bidirectional data flow is possible, making it suitable for applications where data needs to be transmitted in both directions.

Detailed Application Field Plans

The SN74LVC125APWG4 finds application in various fields, including:

1. Microcontroller Interfacing: It enables communication between microcontrollers operating at different voltage levels, facilitating seamless integration into complex systems.
2. Level Shifting: It serves as a voltage level translator in mixed-signal circuits, ensuring proper signal compatibility between different sections of the circuit.
3. Bus Buffering: It acts as a buffer between buses with different voltage requirements, allowing smooth data transfer between them.
4. Sensor Interfaces: It provides voltage level translation for sensors with different logic voltage requirements, enabling their integration into larger systems.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the SN74LVC125APWG4 include:

1. SN74LVC126A: Similar to SN74LVC125APWG4 but with tri-state outputs.
2. SN74LVC244A: Octal buffer/driver with 3-state outputs.
3. SN74LVC1G07: Single buffer/driver with open-drain output.

These alternative models can be considered based on specific application requirements and desired features.

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