If the number on the chip is CD4052B then it will run on 15 volts. Usually C-MOS with the B ending will run on 4.5 to 15 volts. The switching speed is affected by the voltage. The 74HCxx series however, runs on 5 Volts. ----- Original Message ----- From: "Josh Koffman" To: "Microcontroller discussion list - Public." Sent: Wednesday, April 16, 2008 2:44 AM Subject: [EE] CD4052 Question > Hi all. I'm a little bit confused about the CD4052 4 channel > multiplexer. I'm just unsure about the Vee pin. I'm considering using > it to switch some audio signals (consumer line level) and I'm really > not quite sure what voltage Vee wants to see. There is a datasheet > here if anyone wants to have a look: > http://focus.ti.com/lit/ds/symlink/cd4051b.pdf > > I guess what I'm trying to figure out is if I can run this all off a > single ended 12V supply or if I need both positive and negative > supplies. > > Thanks! > > Josh > -- > A common mistake that people make when trying to design something > completely foolproof is to underestimate the ingenuity of complete > fools. > -Douglas Adams > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist