ADM3078EARZ, Transceiver, RS422 / RS485, 1 Driver, 1 Receiver, 2.97 V to 3.63 V, NSOIC-8, -40 °C to 85 °C

ADM3078E is 3.3V, low power data transceiver with ±15KV ESD protection suitable for full- and half-duplex communication on multipoint bus transmission lines. It is designed for balanced data transmission and it is comply with TIA/EIA standards: RS-485 and RS-422. The device has a ⅛ unit load receiver input impedance, which allows up to 256 transceivers 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 outputs are in a known state before communication begins and when communication ceases. Applications includes power/energy metering, industrial control, lighting systems, telecommunications, security systems and instrumentation.

• TIA/EIA RS-485/RS-422 compliant
• ±15KV ESD protection on RS-485 input/output pins
• True fail-safe receiver inputs
• Hot-swap input structure on DE and active-low RE pins
• Outputs high-Z when disabled or powered off
• Common-mode input range from -7V to +12V, thermal shutdown and short-circuit protection
• Half duplex communication, 16Mbps data rate
• Driver/receiver enable, low power shutdown, 256 nodes on bus
• 8-lead standard small outline package (SOIC
• N)
• Operating temperature range from -40°C to +85°C