Tudi MAX490CPA-TUDI

The MAX490 is a low-power transceiver for RS-485 and RS-422 communications. Each device contains one driver and one receiver. The MAX490's driver features an unconstrained slew rate, enabling data rates up to 2.5Mbps. When the driver is disabled and in an idle or fully loaded state, the supply current consumption of these transceivers ranges from 120μA to 500μA. All devices operate from a single 5V supply. The driver includes short-circuit current limiting and is protected by a thermal shutdown circuit that places the driver outputs in a high-impedance state to prevent excessive power dissipation. The receiver inputs feature a failsafe function that guarantees a logic-high output when the inputs are open. The MAX490 is suitable for full-duplex communications.

• Superior noise immunity
• Integrated transient voltage suppression
• Data rates up to 2.5Mbps in electrically noisy environments
• 4.5V~5.5V supply voltage, full-duplex operation
• Fail-safe features
• 1/8 unit load, supports up to 256 devices on the bus
• Driver output short-circuit protection
• Receiver open-circuit fail-safe protection
• A, B port protection: HBM ±15KV

• Low-power RS-485/RS-422 transceiver
• Level translator
• Industrial control LAN