MAX3100CEE-T product image


UART Interface IC
Maxim Integrated
The MAX3100(MAX3100CEE-T ) universal asynchronous receiver transmitter (UART) is the first UART specifically optimized for small microcontroller-based systems. Using an SPI™/MICROWIRE™ interface for communication with the host microcontroller (µC), the MAX3100 comes in a compact 16-pin QSOP. The asynchronous I/O is suitable for use in RS-232, RS-485, IR, and opto-isolated data links. IR-link communication is easy with the MAX3100’s infrared data association (IrDA) timing mode. The MAX3100 includes a crystal oscillator and a baudrate generator with software-programmable divider ratios for all common baud rates from 300 baud to 230k baud. A software- or hardware-invoked shutdown lowers quiescent current to 10µA, while allowing the MAX3100 to detect receiver activity. An 8-word-deep first-in/first-out (FIFO) buffer minimizesprocessor overhead. This device also includes a flexible interrupt with four maskable sources, including address recognition on 9-bit networks. Two hardware-handshaking control lines are included (one input and one output). The MAX3100 is available in 14-pin plastic DIP and small, 16-pin QSOP packages in the commercial and extended temperature ranges.
MAX3100CEE-T Features
• Small TQFN and QSOP Packages Available
• SPI/MICROWIRE-Compatible µC Interface
• +2.7V to +5.5V Supply Voltage in Operating Mode
• Schmitt-Trigger Inputs for Opto-Couplers 
• TX and RTS Outputs Sink 25mA for Opto-Couplers
MAX3100CEE-T Applications
• Handheld Instruments
• Intelligent Instrumentation
• UART in SPI Systems
• Small Networks in HVAC or Building Control
• Isolated RS-232/RS-485: Directly Drives Opto-Couplers
• Low-Cost IR Data Links for Computers/Peripherals


Supply Voltage - Max:5.5 V
Supply Voltage - Min:2.7 V
Supply Current:0.27 mA
Maximum Operating Temperature:+ 70 C
Minimum Operating Temperature:0 C
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