232MFNM1 Datasheet

Male to Female Null Modem


Features, Applications

Null Modems are used to interconnect two computers with similar RS-232 ports. If both ports are DTE or both DCE you cannot connect them directly together. You need a Null Modem to cross pins 2 and 3 (TD and RD) and to loop back the handshake lines. The following diagrams show the four main null modem adapters.



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Manufacturer information

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