7400 Quad 2-Input NAND Gate

Spec Sheet
7400%20Fairch%20real%20pre NTI%20A1

Fairchild

From a photo of a real pre-NTI Apple-1.
9N00/7400 PCF.
7428 date code.
Total # on board: 3.

7400%20Sig%20real%20NTI%20A1

Signetics

From a photo of a real NTI Apple-1.
N7400A.
Vertical labeling, stretched “S” logo, no S below part number. 
Total # on board: 3.

7400%20Fairch%20going%20on%20my%20replica

Fairchild

Desoldered.
Exact date code  and labeling match of pre-NTI.

7400%20Fairch%2073%2074

Fairchild

Unused.
Close date code to pre-NTI.

7400%20Fairch%20sm%20font

Fairchild

Unused.
9N00/7400 PCF in smaller lettering.  ’74 date code.

7400%20Fairch%207602

Fairchild

7400 PC F.  7602 date code.

7400%20Sig%207637

Signetics

N7400A.
Close date code to NTI.
Vertical lettering, no S below part number.

7400%20Sig%207534%20with%20S

Signetics

Desoldered.
N7400A, vertical lettering with S below part number. ’75 date code.

7400%20Sig%207202%20gray

Signetics

N7400A.
Gray plastic, old logo, vertical lettering, no S below part number.  ’72 date code.