Bob / AG5Q wrote: > The NTE-988 is speced at 6.2V rather than 6.0V like the ZR78L06. > > This will mean running the 16C77 at 6.2V which is slightly > higher than it's spec limit of 6.0. I think it would be OK. The max. voltage rating spec for 16C7x devices on Vdd above Vss (logic ground) is 7.5 volts. 73, Mike / KK5F