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General Description

The MAX3070E–MAX3079E 3.3V, ±15kV ESD-protected, RS-485/RS-422 transceivers feature one driver and one receiver. These devices include 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 MAX3070E–MAX3079E include a hot-swap capability to eliminate false transitions on the bus during power-up or hot insertion.

Features

?3.3V Operation

?Electrostatic Discharge (ESD) Protection for RS-485 I/O Pins

±15kV Human Body Model

?True Fail-Safe Receiver While Maintaining EIA/TIA-485 Compatibility

?Hot-Swap Input Structure on DE and RE

?Enhanced Slew-Rate Limiting Facilitates Error Free Data Transmission (MAX3070E–MAX3075E/MAX3079E)

?Low-Current Shutdown Mode (Except MAX3071E/MAX3074E/MAX3077E)

?Pin-Selectable Full-/Half-Duplex Operation (MAX3079E)

?Phase Controls to Correct for Twisted-Pair Reversal (MAX3079E)

?Allow Up to 256 Transceivers on the Bus

?Available in Industry-Standard 8-Pin SO Package