ADM3490 Datasheet

• Operate with 3.3 V supply
• Interoperable with 5 V logic
• EIA RS-485/RS-422 Compliant over Full Common-Range
• Data Rate Options: 10 Mbps
• Half and Full Duplex Options
• Up to 32 Transceivers on a Bus
• -7V to +12V Bus Common Mode Range
• Specified over –40°C to +85°C Temperature Range
• 8 ns skew
• Available in 8-Lead SOIC

• Low-Power RS-485 Applications
• Telecom
• Industrial Process Control
• HVAC

The ADM3490 are low power, differential line transceivers designed to operate using a single 3.3 V power supply. Low power consumption, coupled with a shutdown mode, makes the ADM3490 ideal for power-sensitive applications.

The ADM3490 feature full-duplex communication.

The ADM3490 transmit at up to 10 Mbps. The receiver input impedance is 12 kΩ, allowing up to 32 transceivers to be connected on the bus. A thermal shutdown circuit prevents excessive power dissipation caused by bus contention or by output shorting. If a significant temperature increase is detected in the internal driver circuitry during fault conditions, then the thermal shutdown circuit forces the driver output into a high impedance state. If the inputs are unconnected (floating), the receiver contains a fail-safe feature that results in a logic high output state. The parts are fully specified over the commercial and industrial temperature ranges. The ADM3490 are available in 8-lead SOIC_N.