ACI 74LS02 Quad 2-Input NOR Gate

Spec Sheet
ACI%2074LS02%20Sig%20real%20NTI

Signetics

From a photo of a real NTI Apple-1 ACI card.
N74LS02A, vertical labeling, black plastic, no “S” below part number. 7641 date code.
Total # on board: 1.

ACI%2074LS02%20NS%20real%20SCC

National Semi

From a photo of a real SCC Apple-1 ACI card.
DM74LS02N, old NS logo, ‘618 date code.
Total # on board: 1.

ACI%2074LS02%20Sig%207621

Signetics

Almost exact match with NTI card, except date code is 7621.

ACI%2074LS02%20Fairch%2075%2076

Fairchild

9LS/74LS02, ’75 and ’76 date codes.

ACI%2074LS02%20Sig%20NS

Various

Signetics and NS, post-1976 date codes.