MAX13485EIM/TR

MAX13485 is an RS-485/RS-422 transceiver with a supply voltage range of 3.0V to 5.5V and ±15kV ESD protection, integrating one driver and one receiver. The device includes a failsafe circuit that ensures the receiver output remains logic-high when the receiver inputs are open or shorted. If all transmitters on a terminated, matched bus are disabled (high-impedance state), the receiver outputs a logic-high level. The MAX13485 features hot-plug capability to eliminate erroneous bus transients during power-up or hot insertion. The device employs a reduced slew-rate driver to minimize EMI and reduce reflections caused by improperly terminated cables, enabling error-free data transmission at up to 1Mbps. The MAX13485 is ideal for half-duplex communications, consuming 0.5mA of supply current when unloaded or with the driver disabled under full load. The device features 1/8-unit-load receiver input impedance, allowing up to 256 transceivers on the bus. The MAX13485 is available in SOP-8 and DFN-8 packages.

Applications

• Electric meters
• Lighting systems
• Industrial control
• Telecommunications
• Security systems
• Instrumentation
• Profibus

Key features

• 3.0V ~ 5.5V operating voltage
• RS-485/RS-422 I/O pins with extended ESD protection up to ±15kV HBM
• True fail-safe receiver with full EIA/TIA-485 standard compatibility
• Hot-swap input structure on DE and RE pins
• Enhanced slew rate limiting for error-free data transmission
• Low-current shutdown mode
• Supports up to 256 transceivers on the bus
• Available in industry-standard SOP-8 and DFN-8 packages