MAX3100CPD+

MAX3100CPD+ is a universal asynchronous receiver transmitter (UART). It is the first UART specifically optimized for small microcontroller-based systems. Using a 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. It includes a crystal oscillator and a baud rate generator with software-programmable divider ratios for all common baud rates from 300baud to 230kbaud. A software- or hardware-invoked shutdown lowers quiescent current to 10µA while allowing the MAX3100 to detect receiver activity. Applications include handheld instruments, intelligent instrumentation, UART in SPI systems, small networks in HV AC or building control, isolated RS-232/RS-485: directly drives opto-couplers, low-cost IR data links for computers/peripherals.

• SPI/MICROWIRE-compatible µC interface
• 2.7V to +5.5V supply voltage in operating mode
• Schmitt-trigger inputs for opto-couplers
• TX and active-low RTS outputs sink 25mA for opto-couplers
• VCC supply current in shutdown is 10µA max at SHDN bit=1 or active-low SHDN=0
• Output capacitance is 5pF typical at 9600 baud at TA=+25°C
• Output rise time is 10ns at TX, active-low RTS, DOUT: CLOAD=100pF
• Output fall time is 10ns at TX, active-low RTS, DOUT, active-low IRQ: CLOAD=100pF
• 14 plastic DIP package
• Temperature range from 0°C to +70°C

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