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MAX3221: MAX3221CPWRG4

Part Number: MAX3221
Other Parts Discussed in Thread: THVD1500

Hi.. i am using MAX3221 for RS232 interface in our project as of now and would like to upgrade it to 2 wire RS485. Is there any one to one replacement for MAX3221. If no what could be the easiest way to upgrade. The data rate is not much high.