MAX3079EEPD+

MAX3079EEPD+ is a +3.3V, ±15kV ESD-protected, hot-swap, RS-485 transceiver. It features one driver and one receiver. This device includes 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 devices include a hot-swap capability to eliminate false transitions on the bus during power-up or hot insertion. This transceiver draws 800μA of supply current when unloaded, or when fully loaded with the drivers disabled. This device has a 1/8-unit load receiver input impedance, allowing up to 256 transceivers on the bus. Applications include lighting systems, industrial control, telecom, security systems, and instrumentation.

• Protection for robust performance, ±15kV human body model ESD on I/O pins
• True fail-safe receiver while maintaining EIA/TIA-485 compatibility
• Hot-swap input structure on DE and active-low RE
• Flexible feature set for ease of design, phase controls to correct for twisted-pair reversal
• Driver common-mode output voltage is 3V maximum at R=100 ohm or 54 ohm
• Driver short-circuit output current is 250mA max at 0 ≤ VOUT ≤ 12V, VCC=3.3V ±10%, TA =TMIN to TMAX
• Receiver differential threshold voltage is -125mV typ at -7V ≤ VCM ≤ 12V
• Supply current in shutdown mode is 0.05µA typ at active-low RE=VCC, DE=GND, VCC=3.3V and TA=+25°C
• Enhanced slew-rate-limiting facilitates error free data transmission
• Temperature range from -40°C to +85°C, 14 plastic DIP package

Warnings

Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party