ADM1491EBRZ

ADM1491E is a RS-485 transceiver with ±8kV ESD protection and are suitable for high speed, full duplex communication on multipoint transmission lines. It is designed for balanced transmission lines and comply with TIA/EIA-485-A-98. This device have a 12Kohm receiver input impedance for unit load RS-485 operation, allowing upto 32 nodes on the bus. The differential transmitter outputs and receiver inputs feature electrostatic discharge circuitry that provides protection to ±8kV using the human body model (HBM). The receiver of the device contains a fail-safe feature that results in a logic high output state if the inputs are unconnected (floating). It is widely used in application such as RS-485/RS-422 interfaces, industrial field networks, high data rate motor control, multipoint data transmission systems, single-ended-to-differential signal conversion etc.

• 16Mbps data rate, RS-485/RS-422 full-duplex transceiver for high speed motor control applications
• Open circuit fail-safe, suitable for 5V power supply applications
• Thermal shutdown protection
• Propagation delay (driver) is 11ns at (RL = 54ohm, CL = 100pF)
• Input voltage hysteresis is (receiver) is 30mV at (4.75V ≤ VCC ≤ 5.25V)
• Common-mode output voltage (driver) is 3.0V at (RL = 54ohm or 100 ohm)
• Operating temperature range is −40°C to +85°C
• Package style is 14-lead standard small outline package, narrow body [SOIC-N]

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