7Semi Bidirectional Voltage Level Translator Breakout TXB0104

The 7Semi Bidirectional Voltage Level Translator Breakout (TXB0104) is a compact and efficient logic level shifter designed to safely interface devices operating at different voltage levels. Based on the TXB0104 IC from Texas Instruments, it supports automatic bidirectional voltage translation between two logic levels — typically 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V, and 5 V — without requiring a direction control pin. Ideal for communication between microcontrollers, sensors, and modules with mismatched voltage levels, this breakout ensures reliable, high-speed signal transmission across mixed-voltage systems.

Technical Specifications:

• IC Model: Texas Instruments TXB0104
  
• Function: 4-bit bidirectional voltage level translator
  
• Number of Channels: 4 (A1–A4 to B1–B4)
  
• Voltage Range (VCCA): 1.2 V to 3.6 V
  
• Voltage Range (VCCB): 1.65 V to 5.5 V
  
• Data Direction: Auto-sensing bidirectional
  
• Data Rate:
   – Up to 24 Mbps for push-pull drivers
   – Up to 2 Mbps for open-drain drivers
  
• Input/Output Type: 3-state I/O with internal pull-down resistors
  
• Operating Temperature: -40°C to +85°C
  
• Logic Compatibility: Supports 1.2 V, 1.8 V, 2.5 V, 3.3 V, and 5 V systems
  
• Current Drive Capability: ±20 mA per channel (max)
  
• Power Consumption: Ultra-low quiescent current (<1 µA typical)
  
• PCB Material: High-quality FR-4, with labeled pin headers
  

Features:

• Automatic bidirectional logic level translation — no direction pin required
  
• Supports up to 5 V on one side and as low as 1.2 V on the other
  
• Four independent channels for multiple signal lines
  
• High-speed data transfer up to 24 Mbps for push-pull interfaces
  
• Fully compatible with open-drain and push-pull logic devices
  
• Ideal for interfacing between 3.3 V and 5 V systems (e.g., Arduino to ESP32)
  
• Compact and easy-to-use breakout design for rapid prototyping
  
• Low power consumption suitable for battery-operated devices
  
• Built-in ESD protection and short-circuit tolerance
  
• Compatible with microcontrollers, sensors, and communication modules

Applications:

• Interfacing between 3.3 V and 5 V logic systems
  
• Communication bridging between low- and high-voltage ICs
  
• I²C, SPI, UART, GPIO, and SD card level shifting
  
• Mixed-voltage embedded and IoT system development
  
• Safe integration of 5 V modules with 3.3 V microcontrollers (and vice versa)
  
• Robotics and sensor-based applications requiring multi-voltage communication
  
• Prototyping and testing of digital circuits with different logic standards
  
• Educational and R&D electronics involving cross-voltage communication