I've just read the fine print on the MAX3232 data sheet and found that the V+ reservoir capacitor on pin 2 may be taken to *either* Vcc or Gnd. However, there is an error associated with my use of this chip. I'd assumed that the transmitter inputs have pull-up resistors like the MAX202. They don't, and the unused input (pin 10) should be tied to Vcc or Gnd. Leon -- Leon Heller, G1HSM Email: aqzf13@... My low-cost Philips LPC210x ARM development system: http://www.geocities.com/leon_heller/lpc2104.html
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MAX3232 V+ connection
2004-01-11 by Leon Heller