MAX3140CEI Datasheet PDF - Maxim Integrated

●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