General Description
The MAX14780E +5.0V, ±30kV ESD-protected, RS-485/RS-422 transceiver features one driver and one receiver. The device includes fail-safe circuitry, guaranteeing a logic-high receiver output when receiver inputs are open or shorted. The receiver outputs a logic-high if all transmitters on a terminated bus are disabled (high impedance). The MAX14780E includes a hot-swap capability to eliminate false transitions on the bus during power-up or hot insertion.
The MAX14780E features reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmis sion up to 500kbps.
The MAX14780E is ideal for half-duplex communications and it draws 1.2mA of supply current when unloaded or when fully loaded with the drivers disabled. The MAX14780E has a 1/8-unit load receiver input impedance, allowing up to 256 transceivers on the bus.
The MAX14780E is available in an 8-pin SO package.

FEATUREs
♦ +5.0V Operation
♦ Extended ESD Protection for RS-485/RS-422 I/O Pins ±30kV Human Body Model
♦ True Fail-Safe Receiver While Maintaining EIA/ TIA-485 Compatibility
♦ Hot-Swap Input Structures on DE and RE
♦ Enhanced Slew-Rate Limiting Facilitates Error Free Data Transmission
♦ Low-Current Shutdown Mode
♦ Allow Up to 256 Transceivers on the Bus
♦ Available in Industry-Standard 8-Pin SO Package

APPLICATIONs
   Utility Meters
   Lighting Systems
   Industrial Control
   Telecom
   Security Systems
   Instrumentation
   Profibus