74F521PC FSC 74F521N 20-PIN DIP RARE NEW VINTAGE 86 LAST ONES QTY-1

SN74LS540N MOTOROLA 74LS540 20-PIN DIP NEW RARE LAST ONES

74LS244N SIGNETICS 74LS244 20-PIN DIP IC RARE LAST ONES QTY-1

SN74ALS688N TI 74ALS688 20-PIN DIP RARE NEW LAST ONES QTY-1

M74HC374B1 SGS SN74HC374N 74HC374 20-PIN DIP RARE NOS LAST ONES QTY-1

MM74HC244N NSC 74HC244 SN74HC244 20-PIN DIP RARE NOS LAST ONES QTY-1

SN74LS540N TI 74LS540 20-PIN DIP RARE DC 349X NEW LAST ONES

74F139N SIGNETICS SN74F139N 16-PIN DIP RARE NOS LAST ONES QTY-1