MAX3089EESD+

MAX3089EESD+ is a fail-safe, high-speed, transceiver for RS485/RS-422 communication that contains one driver and one receiver. This device features fail-safe circuitry, which guarantees a logic-high receiver output when the receiver inputs are open or shorted. This means that the receiver output will be a logic high if all transmitters on a terminated bus are disabled (high impedance). This transceiver typically draws 375µA of supply current when unloaded, or when fully loaded with the drivers disabled. Applications include RS-422/RS-485 communications, level translators, transceivers for EMI-sensitive applications, industrial-control local area networks.

• True fail-safe receiver while maintaining EIA/TIA-485 compatibility
• Selectable duplex, selectable data rate
• Selectable slew-rate limited, low power shutdown, receiver/driver enable
• 256 transceivers on bus, ±15kV ESD-protected
• Phase controls to correct for twisted-pair reversal
• Differential driver output (no load) is 5V max at VCC=+5V ±5%, TA=TMIN to TMAX
• Receiver differential threshold voltage is -50mV max at -7V ≤ VCM ≤ 12V
• Supply current in shutdown mode is 0.001µA typ at DE=GND, VRE=VCC, VCC=+5V and TA=+25°C
• Driver rise or fall time is 14ns typ at RDIFF=54ohm, CL1=CL2=100pF, VCC=+5V and TA=+25°C
• 14 SO package, -40°C to +85°C temperature range