1 x M5L8251AP-5 8251 Programmable communication interface USART AM9551 iAPX86 IC

D8251AFC NEC Programmable Communication Interface DIP28

2x KR580IK51 = 8251 Soviet Intel Clone USART IC KP580ИК51

2 x KR580VV51A = 8251A Soviet Intel Clone USART IC KP580BB51A KR580WW51A 8251 IC

1 X AM9551PC AMD 9551 9551PC 8bit shift register NEW IC

6 x Genuine P8251A INTEL Programmable Communications Interface Controller 8251ic

2x Genuine P8251A INTEL Programmable Communications Interface Controller IC NEW

Vintage Intel C8251 Very Rare version; 7540 date code! (ALL LEGS INTACT!!!) (M)