DM7407N DIP IC

General Description
This device contains six independent gates each of which
performs a buffer function. The open-collector outputs
require external pull-up resistors for proper logical operation

Pull-Up Resistor Equations
RMAX e VO (Min) b VOH
N1 (IOH) a N2 (IIH)
RMIN e VO (Max) b VOL
IOL b N3 (IIL)
Where: N1 (IOH) e total maximum output high current for all
outputs tied to pull-up resistor
N2 (IIH) e total maximum input high current for all
inputs tied to pull-up resistor
N3 (IIL) e total maximum input low current for all
inputs tied to pull-up resistor