a demand note or bill is not eligible under the provisions of the act, since it is not in terms payable within the prescribed 90 days, but, at the option of the holder, may not be presented for payment until after that time.
The words on demand serve the same purpose as words making instruments payable at a specified time. They fix maturity of the obligation and do not make demand necessary, but mean that the instrument is due, payable and matured when made and delivered.
12 C.F.R. §201.107