SN74AVC1T45DBVR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Level Shifter
• Characteristics: Bi-directional, Single-bit, Low-power
• Package: SOT-23 (Small Outline Transistor)
• Essence: Logic Level Translator
• Packaging/Quantity: Tape and Reel, 3000 pieces per reel

Specifications

The SN74AVC1T45DBVR is a voltage level shifter integrated circuit designed for bi-directional translation of signals between different voltage domains. It operates with a single bit of data and provides low-power consumption.

Key specifications include:

• Supply Voltage Range: 1.65V to 3.6V
• High-level Input Voltage (VIH): 0.7 x VCC
• Low-level Input Voltage (VIL): 0.3 x VCC
• High-level Output Voltage (VOH): 0.9 x VCC
• Low-level Output Voltage (VOL): 0.1 x VCC
• Maximum Data Rate: 100 Mbps

Pin Configuration

The SN74AVC1T45DBVR has a total of six pins arranged in a specific configuration:

1. AIN - Input A
2. VCCA - Power Supply for Input A
3. GND - Ground
4. BOUT - Output B
5. VCCB - Power Supply for Output B
6. BIN - Input B

Functional Features

• Bi-directional voltage level shifting between two voltage domains.
• Automatic direction control based on the logic levels of the input signals.
• Supports bidirectional communication between devices operating at different voltage levels.
• Provides voltage translation for both high-to-low and low-to-high transitions.
• Low power consumption, making it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages: - Compact SOT-23 package allows for space-efficient designs. - Wide supply voltage range enables compatibility with various systems. - Bi-directional functionality simplifies circuit design and reduces component count. - Low power consumption prolongs battery life in portable devices.

Disadvantages: - Limited to single-bit data translation, not suitable for multi-bit applications. - Maximum data rate of 100 Mbps may be insufficient for high-speed communication.

Working Principles

The SN74AVC1T45DBVR utilizes a combination of MOSFETs and level-shifting circuitry to achieve bi-directional voltage translation. The direction of translation is automatically controlled based on the logic levels of the input signals. When the voltage on one side exceeds the threshold level, the corresponding MOSFET is activated, allowing the signal to pass through to the other side.

Detailed Application Field Plans

The SN74AVC1T45DBVR finds application in various scenarios where voltage level shifting is required between different domains. Some common application fields include:

1. IoT Devices: Enabling communication between low-voltage sensors and microcontrollers operating at higher voltages.
2. Mobile Devices: Facilitating data transfer between different voltage domains within smartphones and tablets.
3. Industrial Automation: Integrating sensors and actuators with control systems operating at different voltage levels.
4. Automotive Electronics: Supporting communication between components with varying voltage requirements in vehicles.
5. Consumer Electronics: Enabling compatibility between devices with different logic voltage levels, such as audio/video equipment.

Detailed and Complete Alternative Models

1. TXB0108PWR: An 8-bit voltage level translator with similar characteristics and package options.
2. PCA9306DCTR: A bidirectional I2C-bus and SMBus voltage level translator with automatic direction control.
3. SN74LVC1T45DCKR: A single-bit voltage level shifter with a different package option (SC-70).

These alternative models offer similar functionality and can be considered as substitutes for the SN74AVC1T45DBVR in specific applications.

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