Post by thread:[EE]:555 Timer Controll Voltage Question?

Hello All, I have a 555 timer design that doesn't use the Control Voltage pin on the 555, What is the proper termination if this pin is not used, can it be left floating or should I tie it to Vcc or Gnd? Regards, Steve -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email spam_OUTlistservTakeThisOuTmitvma.mit.edu with SET PICList DIGEST in the body

Pin 4 if not used should be tied high. Pin 5 should have a 0.01uf cap to ground on it. Rick Steve Kasm wrote: {Quote hidden}> Hello All, > > I have a 555 timer design that doesn't use the Control Voltage pin on > the 555, > > What is the proper termination if this pin is not used, can it be left > floating or should > > I tie it to Vcc or Gnd? > > Regards, > > Steve > > -- > http://www.piclist.com#nomail Going offline? Don't AutoReply us! > email .....listservKILLspam@spam@mitvma.mit.edu with SET PICList DIGEST in the body -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listservKILLspammitvma.mit.edu with SET PICList DIGEST in the body

At 10:40 PM 2/19/02 -0500, Steve Kasm wrote: >I have a 555 timer design that doesn't use the Control Voltage pin on >the 555, > >What is the proper termination if this pin is not used, can it be left >floating or should I tie it to Vcc or Gnd? Either let it float *OR* connect a small capacitor (0.01 uF) between pin 5 and Gnd. Don't connect it directly to either Vcc or Gnd. dwayne Dwayne Reid <.....dwaynerKILLspam.....planet.eon.net> Trinity Electronics Systems Ltd Edmonton, AB, CANADA (780) 489-3199 voice (780) 487-6397 fax Celebrating 18 years of Engineering Innovation (1984 - 2002) .-. .-. .-. .-. .-. .-. .-. .-. .-. .- `-' `-' `-' `-' `-' `-' `-' `-' `-' Do NOT send unsolicited commercial email to this email address. This message neither grants consent to receive unsolicited commercial email nor is intended to solicit commercial email. -- http://www.piclist.com hint: To leave the PICList EraseMEpiclist-unsubscribe-requestspam_OUTTakeThisOuTmitvma.mit.edu