±15kV ESD-Protected, Fail-Safe, 20Mbps, Slew-Rate-Limited RS-485/RS-422 Transceivers in a SOT

The MAX3060E/MAX3061E/MAX3062E high-speed transceivers for RS-485/RS-422 communication contain one driver and one receiver. These devices feature fail-safe circuitry, which guarantees a logic-high receiver output when the receiver inputs are open or shorted. This means that the receiver output is a logic high if all transmitters on a terminated bus are disabled (high impedance). These devices also feature hot-swap circuitry that eliminates data glitches during hot insertion.

The MAX3060E features slew-rate-limited drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission up to 115kbps. The MAX3061E, also slew-rate limited, transmits up to 500kbps. The MAX3062E driver is not slew-rate limited, allowing transmit speeds up to 20Mbps. All transmitter outputs are protected to ±15kV using the Human Body Model.

These transceivers typically draw 910µA of supply current when unloaded, or 790µA when fully loaded with the drivers disabled.

All devices have a 1/8-unit-load receiver input impedance that allows up to 256 transceivers on the bus. These devices are intended for half-duplex communication.

Applications

* Industrial Control Local Area Networks * Level Translators * RS-422/RS-485 Communications * Transceivers for EMI-Sensitive Applications

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

* Enhanced Slew-Rate Limiting Facilitates

* Error-Free Data Transmission (MAX3060E and MAX3061E)

* 1nA Low-Current Shutdown Mode

* Hot-Swappable for Telecom Applications

* ESD Protection: ±15kV Human Body Model

* Allow Up to 256 Transceivers on the Bus

* Space-Saving 8-Pin SOT23 Package