SN74LVTH125DE4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Level Translator
• Characteristics:
  • Low-voltage, high-speed CMOS technology
  • 3-state outputs
  • Supports mixed-mode signal operation
  • Schmitt-trigger inputs for noise immunity
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Logic level translation between different voltage domains
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.65V to 5.5V
• High-Level Input Voltage: 2.3V to VCC + 0.3V
• Low-Level Input Voltage: -0.3V to 0.8V
• High-Level Output Voltage: 2.4V (min) at IOH = -12mA
• Low-Level Output Voltage: 0.4V (max) at IOL = 24mA
• Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

The SN74LVTH125DE4 has a total of 14 pins arranged as follows:

___________ | | 1 | 14 | VCC 2 | 13 | B 3 | 12 | A 4 | 11 | GND 5 | 10 | Y 6 | 9 | OE# 7 | 8 | Y# |___________|

Functional Features

• Logic level translation: The SN74LVTH125DE4 allows for bidirectional voltage level translation between two different voltage domains.
• 3-state outputs: The device provides three-state outputs, allowing multiple devices to share a common bus without interference.
• Mixed-mode signal operation: It supports the translation of signals with different voltage levels within the same system.
• Schmitt-trigger inputs: The Schmitt-trigger inputs ensure noise immunity and improve the robustness of the circuit.

Advantages and Disadvantages

Advantages: - Wide supply voltage range allows compatibility with various systems. - High-speed operation enables efficient signal translation. - 3-state outputs facilitate bus sharing in complex systems. - Schmitt-trigger inputs provide noise immunity for reliable operation.

Disadvantages: - Limited number of channels (single quad package). - Not suitable for high-voltage applications.

Working Principles

The SN74LVTH125DE4 operates by receiving input signals from one voltage domain and translating them to the corresponding voltage level in another domain. It utilizes CMOS technology to achieve high-speed operation while maintaining low power consumption. The device's Schmitt-trigger inputs help reject noise and ensure reliable signal translation. The 3-state outputs allow the device to be connected to a shared bus, enabling multiple devices to communicate without interference.

Detailed Application Field Plans

The SN74LVTH125DE4 is commonly used in various applications that require voltage level translation between different logic families or voltage domains. Some typical application fields include:

1. Microcontroller interfacing: The IC can be used to interface microcontrollers operating at different voltage levels, allowing seamless communication between them.
2. Communication systems: It is utilized in communication systems where different components operate at different voltage levels, such as UART, SPI, or I2C interfaces.
3. Industrial automation: The device finds applications in industrial automation systems, enabling communication between sensors, actuators, and control units operating at different voltage levels.
4. Battery-powered devices: It is suitable for portable devices powered by batteries, where efficient voltage level translation is required to optimize power consumption.

Detailed and Complete Alternative Models

1. SN74LVC125A: Similar to SN74LVTH125DE4, but operates at a lower voltage range (1.65V to 3.6V).
2. SN74HCT125: A TTL-compatible alternative with higher voltage tolerance (2V to 5.5V) but slower speed.
3. SN74AVC4T774: A quad-channel alternative with level shifting capabilities for bidirectional translation.

These alternative models offer similar functionality and can be chosen based on specific system requirements and constraints.

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