ANALOG DEVICES ADM3070EYRZ RS422/RS485 Transceiver, 250Kbps, Full Duplex, Idle, Open, Short, 3.3V Supply, NSOIC-14

ADM3070EYRZ is a 3.3V, low power data transceiver with ±15kV ESD protection suitable for full duplex communication on multipoint bus transmission lines. It is designed for balanced data transmission, and this comply with TIA/EIA standards: RS-485 and RS-422. The device has a ? unit load receiver input impedance, which allows up to 256 transceiver on a bus. Because only one driver should be enabled at any time, the output of a disabled or powered down driver is tristated to avoid overloading the bus. The receiver inputs have a true fail-safe feature, which eliminates the need for external bias resistors and ensures a logic high output level when the inputs are open or shorted. This guarantees that the receiver output is in a known state before communication begins and when communication ceases. Application includes power/energy metering, industrial control, lighting systems, telecommunications, security systems, instrumentation.

• TIA/EIA RS-485/RS-422 compliant
• ±15kV ESD protection on RS-485 input/output pins
• Full duplex, slew rate limited, driver/receiver enable, low power shutdown
• 256 nodes on bus, true fail-safe receiver inputs
• Hot-swap input structure on DE and active low RE pins
• Reduced slew rates for low EMI, outputs high-Z when disabled or powered off
• Thermal shutdown and short-circuit protection
• Common-mode input range from -7V to +12V
• Differential output voltage is 2V min (RL = 100 ohm, RS-422)
• 14 lead SOIC-N package, temperature range from -40°C to +125°C

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