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Updated at 17/06/2025 10:30:15(UTC+8)

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Description

General Description
The MAX3100 universal asynchronous receiver transmit ter (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.
Features
♦16-Pin QSOP Package (8-pin SO footprint): Smallest UART Available
♦Full-Featured UART:
—IrDA SIR Timing Compatible
—8-Word FIFO Minimizes Processor Overhead at High Data Rates
—Up to 230k Baud with a 3.6864MHz Crystal
—9-Bit Address-Recognition Interrupt
—Receive Activity Interrupt in Shutdown
♦SPI/Microwire-Compatible µC Interface
♦Lowest Power:
—150µA Operating Current at 3.3V
—10µA in Shutdown with Receive Interrupt
♦+2.7V to +5.5V Supply Voltage in Operating Mode
♦Schmitt-Trigger Inputs for Opto-Couplers
♦TX and RTSOutputs Sink 25mA for Opto-Couplers
Applications
Hand-Held 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

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MAX3100CPD Specifications

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