MAX489EESD+

MAX489EESD+ is a low-power transceiver for RS-485 and RS-422 communications in harsh environments. Each driver output and receiver input is protected against ±15kV electro-static discharge (ESD) shocks, without latch up. This part contains one driver and one receiver. This transceiver draws as little as 120µA supply current when unloaded or when fully loaded with disabled drivers. Drivers are short-circuit current limited and are protected against excessive power dissipation by thermal shutdown circuitry that places their outputs into a high-impedance state. The receiver input has a fail-safe feature that guarantees a logic-high output if the input is an open circuit. Applications include low-power RS-485 transceivers, low-power RS-422 transceivers, level translators, transceivers for EMI-sensitive applications, industrial-control local area networks.

• Full duplex, 0.25Mbps data rate
• Slew rate limited, receiver/driver enable
• 120μA quiescent current
• 32 number of transmitters on bus
• Differential driver output (no load) is 5V maximum
• Receiver differential threshold voltage is 0.2V max at -7V ≤ VCM ≤ 12V
• Driver output skew to output is 20ns typ at RDIFF=54ohm, CL1=CL2=100pF
• Driver rise or fall time is 250ns typ at RDIFF=54ohm,CL1=CL2=100pF
• 14 SO package
• Temperature range from -40°C to +85°C

注释

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