MAX1483EPA+

MAX1483EPA+ is a low-power transceiver for RS-485 and RS-422 communication. It features slew-rate-limited drivers that minimize EMI and reduce reflections caused by improperly terminated cables. Data rates are guaranteed up to 250kbps. It draws only 20µA of supply current. Additionally, this has a low-current shutdown mode that consumes only 0.1µA. It operates from a single +5V supply. 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/RS-422 networks, transceivers for EMI-sensitive applications, industrial-control local area networks, and large 256-node LANs.

• Slew-rate limited for reduced EMI and reduced reflections
• Allows up to 256 transceivers on the bus-guaranteed (1⁄8-unit load)
• Current limiting and thermal shutdown for driver overload protection
• Differential driver output (no load) is 5V max at VCC=+5V ±5%, TA=TMIN to TMAX
• Driver common-mode output voltage is 3V max at R=27ohm or 50 ohm
• Supply current in shutdown is 0.1µA typ at DE=0V, RE=VCC
• Driver output skew to output is 800ns max at RDIFF=54ohm, CL1=CL2=100pF
• Common-mode input voltage range from -7V to +12V
• 8 PDIP package
• Temperature range from -40°C to +85°C

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