SN74LVT125QDRQ1

Overview

Category: Integrated Circuit (IC)

Use: Buffer/Driver

Characteristics: - Low-voltage, high-speed CMOS technology - 3-state outputs - Wide operating voltage range: 1.65V to 3.6V - High output drive: ±32mA at 3.3V - Schmitt-trigger inputs for noise immunity - Available in a small package size - RoHS compliant

Package: SOIC (Small Outline Integrated Circuit)

Essence: The SN74LVT125QDRQ1 is a quad bus buffer gate designed for low-voltage applications.

Packaging/Quantity: The SN74LVT125QDRQ1 is available in tape and reel packaging with 2500 units per reel.

Specifications

• Supply Voltage Range: 1.65V to 3.6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +125°C
• Propagation Delay Time: 2.5ns (typical)
• Maximum Quiescent Current: 10μA
• Maximum Output Current: ±32mA

Pin Configuration

The SN74LVT125QDRQ1 has a 14-pin configuration as follows:

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

Functional Features

• Quad 3-state buffer gate with independent control for each gate
• Allows bidirectional voltage level translation between different logic levels
• Provides buffering and driving capability to enhance signal integrity
• Schmitt-trigger inputs ensure noise immunity and improve signal quality

Advantages and Disadvantages

Advantages: - Low-voltage operation allows compatibility with a wide range of systems - High-speed CMOS technology enables fast data transmission - 3-state outputs provide flexibility in bus sharing applications - Schmitt-trigger inputs enhance noise immunity

Disadvantages: - Limited output current may not be suitable for high-power applications - Only supports unidirectional data flow

Working Principles

The SN74LVT125QDRQ1 operates as a buffer/driver, providing voltage level translation and signal amplification. It accepts input signals and drives the corresponding output pins based on the control signals applied to the OE (Output Enable) pins. When the OE pin is low, the outputs are active and reflect the input signals. Conversely, when the OE pin is high, the outputs are in a high-impedance state.

The device utilizes low-voltage, high-speed CMOS technology, allowing it to operate at lower power supply voltages while maintaining fast switching speeds. The Schmitt-trigger inputs help reject noise and provide improved signal integrity.

Detailed Application Field Plans

The SN74LVT125QDRQ1 is commonly used in various applications, including:

1. Microcontroller interfacing: It can be used to interface microcontrollers with different logic levels, ensuring proper signal translation and compatibility.
2. Bus buffering: The device acts as a buffer to amplify and drive signals along a bus, enhancing signal integrity and reducing noise.
3. Level shifting: It enables voltage level translation between different logic families, facilitating communication between devices operating at different voltage levels.
4. Signal isolation: The 3-state outputs allow multiple devices to share a common bus without interfering with each other's signals.

Detailed and Complete Alternative Models

1. SN74LVC125A: Similar quad buffer gate with 3-state outputs, but operates at a wider voltage range of 1.2V to 5.5V.
2. SN74LVTH125: Quad buffer gate with 3-state outputs and 5V-tolerant inputs, suitable for mixed-voltage systems.
3. SN74LVC1G125: Single buffer gate with 3-state output, ideal for space-constrained applications requiring voltage level translation.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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