4002

Introduction date:   1971
Type:   320-bit MOS RAM and 4-bit output port.
Memory:   80 x 4-bit
Technology:   P-channel silicon gate MOS technology
Number of transistors:    
History:


 
  The 4002 was designed to be used with other MCS-4/40 devices such as the 4004 CPU.
The chip was available in two different metal options 4002-1 and 4002-2 this was to make it possible to extend the chip selection so that 4pcs of 4002 chips could be connected to the 4004 CPU without any external chip selection logic.
 
Second source:   National Semiconductors was the only second source.

 


Intel          
C4002-1 C4002-1 C4002-1 C4002-1 C4002-2  
 
N.D.C
 
Malaysia
7506
Malaysia
7538
Malaysia
N.D.C
Malaysia
N.D.C
 
           
D4002-1          
         
Malaysia
7641
         
           
P4002-1 P4002-1 P4002-2 P4002-2 P4002-2  
 
Philippines
7506
Philippines
7829
N.D.C
 
Philippines
7948
N.D.C
 
 

 

 


National Semiconductor        
INS4002-1J          
         
Philippines
7844
         

 


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