Hi.
Are you using a MAX232 with ceramic capacitors as RS232 tranceiver?
Maybe you need a small (blocking) capacitor on your board between Vcc and GND.
The carge pumps of MAX232 seems to generate lots of noise, which ripples you have to smooth.
Best regards,
Are you using a MAX232 with ceramic capacitors as RS232 tranceiver?
Maybe you need a small (blocking) capacitor on your board between Vcc and GND.
The carge pumps of MAX232 seems to generate lots of noise, which ripples you have to smooth.
Best regards,