555 Timer

Spec Sheet
555%20NE555V%20Fairch%207538%20real%20pre NTI%20A1

Fairchild

From a photo of a real pre-NTI Apple-1.
NE555V F, black plastic.
7538 date code.
Total # on board: 1.

555%20NE555V%20Sig%207609%20real%20NTI%20A1

Signetics

From a photo of a real NTI Apple-1.
Vertical labeling, black plastic, block “S” logo. 7609 date code. 
Total # on board: 1.

555%20NE555V%20Fairch%207539

Fairchild

NE555V F, black plastic. 7539 date code. Very close date code and exact labeling match to the real Apple-1.

555%20NE555V%20Fairch%20no%20date

Fairchild

Labeling amost worn off, but appears to be an NE555V F in black plastic.

555%20UA555TC%20Fairch%207623

Fairchild

UA555TC F, black plastic. 7623 date code.

555%20UA555TCQM%20Fairch%207828

Fairchild

UA555TCQM F, black plastic. 7828 date code.

555%20NE555V%20Sig%207234

Signetics

Vertical labeling, gray plastic, old “S” in box logo. 7234 date code.

555%20NE555V%20Sig%207547

Signetics

Vertical labeling, black plastic, block “S” logo. 7547 date code. Close date code and exact labeling match to the real Apple-1.

555%20NE555P%20TI%20823

Texas Instruments

NE555P, black plastic. 823 date code.

555%20LM555CN%20NS%207643

National Semi

LM555CN, black plastic. 7643 date code.

555%20555P%20KIA%20946

KIA

555P, black plastic. 946 date code.