MAX1487ECSA+

MAX1487ECSA+ is a low-power, transceiver for RS-485 and RS422 communication. It features reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, thus allowing error-free data transmission up to 250kbps. Drivers are short-circuit current limited and are protected against excessive power dissipation by thermal shutdown circuitry that places the driver 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, and industrial-control local area networks.

• Half duplex, 2.5Mbps data rate, receiver/driver enable
• 230μA quiescent current
• 128 number of receivers on bus
• Differential driver output (with load) is 2V min at R=50 ohm (RS-422), VCC=5V ±5%, TA=TMIN to TMAX
• Receiver differential threshold voltage is 0.2V max at -7V ≤ VCM ≤ 12V, VCC=5V ±5%, TA=TMIN to TMAX
• Driver rise or fall time is 20ns typ at RDIFF=54ohm, CL1=CL2=100pF, VCC=5V ±5%, TA=TMIN to TMAX
• Receiver short-circuit current is 95mA max at 0V ≤ VO ≤ VCC, VCC=5V ±5%, TA=TMIN to TMAX
• 0°C to +70°C temperature range
• 8 SO package

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