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