General Description
●The MAX3140 is a complete universal asynchronous receiver-transmitter (UART) and a true fail-safe RS-485/RS-422 transceiver combined in a single 28-pin QSOP package for space-, cost-, and power-constrained applications. The MAX3140 saves additional board space as well as microcontroller (µC) I/O pins by featuring an SPI™/QSPI™/MICROWIRE™-compatible serial interface. It is pin-programmable for configuration in all RS-485/RS-422 networks.
●Features
●♦ Integrated UART and RS-485/RS-422 Transceiver in a Single 28-Pin QSOP
●♦ SPI/MICROWIRE-Compatible Interface Saves µC I/O Pins
●♦ True Fail-Safe Receiver Output Eliminates Complex Network Termination
●♦ Pin-Programmable RS-485/RS-422 Features
● Half/Full-Duplex Operation
● Slew-Rate Limiting for Reduced EMI
● 115kbps/500kbps/10Mbps Data Rates
● Receiver/Transmitter Phase for Twisted-Pair Polarity Reversal
●♦ Full-Featured UART
● Programmable Up to 230k baud with a 3.6864MHz Crystal
● 8-Word Receive FIFO Minimizes Processor
● Overhead 9-Bit Address-Recognition Interrupt
●♦ Allows Up to 256 Transceivers on the Bus
●♦ Low 20µA Hardware Shutdown Mode
●♦ Hardware/Software-Compatible with MAX3100 and MAX3089
●Applications
●Industrial-Control
●Transceivers for EMI
●Local Area Networks
●Sensitive Applications
●HVAC and Building
●Control Embedded Systems
●Point-of-Sale Devices
●Intelligent Instrumentation
