MAX250CPD+

MAX250CPD+ is a 5V, isolated, RS-232 driver/receiver. By combining many functions on two chips, the cost and complexity required for an isolated digital interface is greatly reduced. Four low-cost optocouplers, four capacitors, a diode and a small pot-core type transformer are all that are required to complete a 19.2k baud transceiver. Faster data rates are possible by using high-speed optocouplers. In addition to the driving and receiving circuitry for the optocouplers, the chipset includes a push-pull transformer driver to supply power to the interface's isolated side. Other convenient features include single +5V operation, a low power shutdown mode, and output-enabling control for three-state operation. Applications include bridge ground differentials, data links to analogue circuits, high-noise data communications, and industrial communications.

• Isolated data interface, single +5V supply
• Uses low cost optocouplers
• 5µW power shutdown, 2 transmitters and 2 receivers
• Operating supply current is 0.1mA typ at D1, D2 open
• Shutdown supply current is 1µA typ at TA=-40 to 85°C
• Switch frequency is 200kHz typ at VCC=5V, TA=25°C
• Current output source is -8mA typ at Vout=1.4V, TA=25°C
• Leakage current is 10µA maximum
• 14 lead plastic DIP package
• Temperature range from 0°C to +70°C

Warnings

Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.

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