Actually, you might want to use a 7416 which is rated for 15V, or a 7406 which is rated for 30V. The 7417 and 7407 are the non-inverting versions of these. The 7405 is only rated for 7V absolute maximum. ----- Original Message ----- To: "Multiple recipients of list CHIPDIR-L" <[EMAIL PROTECTED]> Sent: Monday, December 08, 2003 6:29 AM
> As an electronics experimenter who is blind, I write down the > pin-outs of chips I am working with in Braille in a notebook. > Sometimes, I forget to write down crucial details that I just know > I'll remember as well as I do my name, but my brain sometimes doesn't > remember as well as I'd like. > > Are the Control lines for the 4 bilateral switches of a CD4016 > or a CD4066 active low or active high? > > I am going to be running one or two of these chips from a PIC, > actually, via a 7405 open collector hex inverter to shift levels from > +5V to +12v where the bilateral switches can switch a larger voltage > range. The neat thing about the PIC is that I will just write the > firmware to fit the polarity requirements. > > Those who have ever switched audio with a CD4016 or 66 know > that when the switch is open, voltages that exceed VDD/2 will slip > through anyway. With 12 volts, this raises the breakdown threshold to > +-6 volts rather than +-2.5 volts. > > Martin McCormick WB5AGZ Stillwater, OK > OSU Information Technology Division Network Operations Group > -- > Author: Martin McCormick > INET: [EMAIL PROTECTED] > > Fat City Network Services -- 858-538-5051 http://www.fatcity.com > San Diego, California -- Mailing list and web hosting services > --------------------------------------------------------------------- > To REMOVE yourself from this mailing list, send an E-Mail message > to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in > the message BODY, include a line containing: UNSUB CHIPDIR-L > (or the name of mailing list you want to be removed from). You may > also send the HELP command for other information (like subscribing). -- Author: Brad O'Dell INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB CHIPDIR-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
