MAX1490BCPG+

MAX1490BCPG+ is a complete, electrically isolated, RS-485/ RS-422 data-communications interface solution in a hybrid microcircuit. Transceivers, optocouplers, and a transformer provide a complete interface in a standard DIP package. A single +5V supply on the logic side powers both sides of the interface. It features reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission at data rates up to 250Kbps. It features full-duplex communication. Drivers are short-circuit current limited and protected against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into a high-impedance state. It is used in applications such as isolated RS-485/RS-422 data interfaces, transceivers for EMI-sensitive applications, industrial-control local area networks, automatic test equipment, and HVAC/building control networks.

• Half duplex, 0.25Mbps data rate, slew rate limited
• Switch frequency is 535KHz typical at (VCC = 5V and TA = +25°C)
• Operating supply current is 35mA typical at (DE = VCC or open, RL = ∞, +25°C only)
• Shutdown supply current is 0.2µA typical at (VCC = 5V and TA = +25°C)
• Isolation capacitance is 10pF typical at (TA = +25°C, VISO = 50VDC)
• Driver input to output propagation delay is 100ns typical at (RDIFF = 54ohm, CL1 = CL2 = 100pF)
• Driver rise or fall time is 15ns typical at (RDIFF = 54ohm, CL1 = CL2 = 100pF)
• Differential receiver skew is 20ns typical at (RDIFF = 54ohm, CL1 = CL2 = 100pF)
• Operating temperature range from 0°C to +70°C
• 24-lead wide plastic DIP package

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party