7Semi UART Mux Demux Breakout Board - 4 Channel (SN74LV4052)

The 7Semi UART Mux/Demux Breakout Board - 4 Channel (SN74LV4052) is a high-speed analog multiplexer and demultiplexer module that allows switching between multiple UART devices using a single microcontroller interface. Based on the Texas Instruments SN74LV4052 IC, it features dual 4-channel analog multiplexers with low ON resistance and wide voltage compatibility. This breakout board enables up to four UART or serial lines to be connected and controlled efficiently, making it ideal for communication routing, signal selection, and shared UART interface applications in embedded systems.

Technical Specifications:

• IC Used: Texas Instruments SN74LV4052A
  
• Type: Dual 4-channel analog multiplexer/demultiplexer
  
• Channels: 4 (2 groups of 4: 4 inputs and 4 outputs per side)
  
• Control Inputs: A, B (selection pins), INH (enable pin)
  
• Signal Type: Analog or digital up to 5V logic level
  
• Supply Voltage (VCC): 2V to 5.5V
  
• Control Input Voltage: 0V to VCC
  
• On-State Resistance: 70Ω typical at 5V
  
• Bandwidth: Up to 100 MHz
  
• Propagation Delay: ~10 ns typical Operating Current: Very low, <1 µA typical (static)
  
• Power Consumption: Ultra-low for low-power systems
  
• Operating Temperature Range: -40°C to +125°C
  
• Interface Type: UART, analog, or digital switching
  
• Logic Compatibility: 3.3V and 5V systems
  
• PCB: High-quality FR-4 with labeled pin headers
  

Features:

• Dual 4-channel analog multiplexer/demultiplexer configuration
  
• Allows selection among multiple UART devices using digital control pins
  
• Supports both 3.3V and 5V logic systems
  
• Low ON resistance and fast switching performance
  
• Simple control via two select lines (A, B) and one enable pin (INH)
  
• Compatible with both analog and digital signals
  
• High-speed operation ideal for serial communication routing
  
• Compact PCB design with clear labeling for easy integration
  
• Low power consumption suitable for embedded and IoT systems
  
• Compatible with Arduino, ESP32, STM32, and Raspberry Pi

Applications:

• UART communication selection and switching
  
• Serial device multiplexer for embedded systems
  
• Sensor and peripheral selection in IoT devices
  
• Signal routing and communication bus sharing
  
• Test and measurement instrumentation
  
• Data acquisition and control systems
  
• Robotics and automation communication hubs
  
• Educational and research-based serial communication projects
  
• Industrial equipment requiring multi-channel UART management