MAX3109 (2)

The MAX3109 is available from Analog Devices at Xecor. Designed for dual universal asynchronous receiver-transmitter (UART) functionality, the MAX3109 offers 128-word FIFOs, high-speed SPI or I²C controller interface, and flexible baud-rate programming up to 24Mbps. Available in a compact 32-TQFN (5x5) package, it is ideal for automotive infotainment systems, handheld devices, HVAC or building control, medical systems, and programmable logic controllers (PLCs). Whether used in point-of-sales systems, power meters, or industrial automation, this series ensures high performance, scalability, and efficiency for demanding applications. Xecor is an authorized distributor for Analog Devices. Please view our extensive selection of the MAX3109 series below.

Part Number Description Package Inventory Add To Bom
MAX3109ETJ+ 128Byte UART ROHS 2 TQFN-32-EP(5x5) MAX3109ETJ+ LFCSP-32 3,479
MAX3109ETJ+T MAX3109ETJ+T supports a variety of voltage levels, making it versatile for different system requirements LFCSP-32 6,969

Key Featrues

Deep 128-Word FIFO Buffers: The MAX3109 includes 128-word FIFO buffers for both transmit and receive operations, significantly reducing the load on the microcontroller. This feature enhances system performance by allowing continuous data flow without frequent interruptions, making it ideal for high-throughput applications like industrial automation and medical systems.
High-Speed SPI/I²C Interface: With support for SPI up to 26MHz and Fast Mode Plus I²C up to 1MHz, the MAX3109 ensures fast and efficient communication between the microcontroller and the UART. This high-speed interface is particularly beneficial for applications requiring rapid data exchange, such as automotive infotainment and handheld devices.
Integrated PLL and Fractional Baud-Rate Generator: The built-in phase-locked loop (PLL) and fractional baud-rate generator provide flexible baud-rate programming, enabling precise control over communication speeds. This feature ensures compatibility with a wide range of devices and standards, enhancing the versatility of the IC in diverse applications like HVAC control and power meters.
Automatic Flow Control and Line Noise Detection: The MAX3109 supports automatic RTS/CTS hardware flow control and XON/XOFF software flow control, ensuring reliable data transmission even in noisy environments. Additionally, line noise detection ensures data integrity, making it suitable for industrial and communication systems where signal reliability is critical.
Low Power Consumption and Power Management: Operating from a 1.71V to 3.6V supply range, the MAX3109 includes shutdown and autosleep modes, reducing power consumption to as low as 1µA in shutdown mode. This feature is essential for portable and battery-powered applications, such as handheld devices and point-of-sale systems, where energy efficiency is a priority.

Applications

Automotive Infotainment Systems: The MAX3109 is ideal for managing communication between microcontrollers and peripheral devices in automotive infotainment systems. Its dual UART capability and high-speed SPI/I²C interface ensure seamless data transfer for features like touchscreens, audio systems, and navigation, making it suitable for modern vehicle electronics.
Handheld Devices: The MAX3109 is perfect for handheld devices requiring efficient serial communication. Its 128-word FIFO buffers and low-power modes enable reliable data exchange between processors and peripherals, such as displays or sensors, while conserving battery life in portable applications like smartphones and tablets.
Medical Systems: The MAX3109 is well-suited for medical systems requiring robust and reliable communication. Its RS232/RS485 support and IrDA encoder/decoder enable secure data transfer between medical devices, such as patient monitors and diagnostic equipment, ensuring accurate and timely information in healthcare environments.
Programmable Logic Controllers (PLCs): The MAX3109 is ideal for PLCs in industrial automation. Its dual UART channels and automatic flow control features simplify communication with sensors, actuators, and other control modules, ensuring efficient and error-free data exchange in manufacturing and process control systems.