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1990: IIT
  week 30, 1990: IIT 2C87-8
  week 39, 1990: IIT 2C87-20
  week 45, 1990: IIT 2C87-10
  week 50, 1990: IIT 3C87-20
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» all chips made in 1990
 
IIT 2C87-8
IIT 2C87-8 Top Side
2C87-8
(M) (C) IIT 1988
2C87A02SMBC
ABW3
PT 90300A
IIT 2C87-8 Back Side
The IIT 2C87 was the first Intel 287 clone. It was introduced in 1989 and has about the same speed as the Intel 287XL. The 2C87 implements the full 387 instruction set. It is available for speeds of up to 20 MHz.
 
There is also a rare 25MHz version - too fast for almost every 286.
 
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Core Frequency:8 MHz
Board Frequency:8 MHz
Introduced:1989
Manufactured:week 30/1990
Made in:USA
Package Type:Ceramic
DIP-40
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IIT 2C87-20
IIT 2C87-20 Top Side
2C87-20
(M) (C) IIT 1988
1001AF1A1A1C
ADF1
ID 90398A USA
IIT 2C87-20 Back Side
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Core Frequency:20 MHz
Board Frequency:20 MHz
Introduced:1989
Manufactured:week 39/1990
Made in:USA
Package Type:Ceramic
DIP-40
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IIT 2C87-10
IIT 2C87-10 Top Side
2C87-10
(M) (C) IIT 1988
1001AF1A1A1C
AES1
ID 90450L USA
IIT 2C87-10 Back Side
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Core Frequency:10 MHz
Board Frequency:10 MHz
Introduced:1989
Manufactured:week 45/1990
Made in:USA
Package Type:Ceramic
DIP-40
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IIT 3C87-20
IIT 3C87-20 Top Side
3C87-20
(M) (C) IIT 1988
1002BC3C2FOC
AFG1
PT 90500A USA
IIT 3C87-20 Back Side
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Core Frequency:20 MHz
Board Frequency:20 MHz
Data bus (ext.):32 Bit
Address bus:32 Bit
Introduced:1989
Manufactured:week 50/1990
Made in:USA
Package Type:Ceramic
PGA-68
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