[Elecraft] K3 KIO3 U1

[Viggo Magnus Nilsen]

Hello K3 owners. 

I need to replace U1 on the KIO3 board. 

In my K3 sn: 218x  the part nr is: SN75C1406 G4. 

Is there any other SN75C1406 can be replaced with the ''old one''. 

Thanks in advance :-) 

73 Viggo  LA9NEA