Tudi MAX489CSD-TUDI

MAX489 is a low-power transceiver for RS-422 communications. Each unit contains one driver and one receiver. The MAX489 reduces the driver slew rate to minimize EMI and reduce reflections caused by improperly terminated cables, enabling error-free data transmission at up to 50kbps. These transceivers draw supply currents between 120μA and 500μA with the driver disabled and with no load or full load. All devices operate from a single 5V supply. The driver features 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 include a failsafe feature that guarantees a logic-high output when the inputs are open. The MAX489 is suitable for full-duplex communications.

• 4.5V~5.5V supply voltage, supports RS485/RS422 full-duplex communication
• Fail-safe functionality
• 1/8 unit load, allows up to 256 devices on the bus
• Driver short-circuit output protection
• Receiver open-circuit fail-safe protection
• Strong noise immunity
• Integrated transient voltage suppression
• Data rate up to 2.5Mbps in electrically noisy environments
• A, B port protection: HBM ±15KV

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