Maxim max232a232232e238 5v powered multichannel rs232 driversreceivers maxim max238cng the max232cng is a 5v powered multichannel transceiver that has been designed as a rs232 and v28 communications interface especially where a 12v supply is not available the device has a low power shutdown mode that reduces power dissipation making it particularly useful in battery powered systems suitable applications for this device include portable computers low power modems interface tra