Nor pinout gate datasheet input quad output 74ls121 monostable multivibrator ic with schmitt trigger inputs Seekic mfg logic
74LS273 Original supply, US $ 0.80-1.00 , Logic ICs, [TI] Texas
74ls126a
74ls151 original supply, us $ 0.0001-5 , [fairchild] fairchild
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Pcb design
Ic schematic circuit enable another why would used pcb circuitlab created using stack74ls240 octal buffer/line driver ic with 3-state outputs 74ls165 ebookCircuit basic seekic index.
74ls165 circuit diagram.Circuit ebook author diagram .