Part Number : 74LS266
Function : Quad 2-Input Exclusive-NOR Gate
Package : DIP, SOIC 14 Pin Type
Maker : Fairchild Semiconductor
Pinouts : 
Description :
This device contains four independent gates each of which performs the logic exclusive-NOR function. Outputs are open collector.
Features :
Quad 2-Input Exclusive-NOR Gate with Open-Collector Outputs
Datasheet PDF Download : 
Others datasheet of same file :
74266, DM74LS266, 74LS266M, 74LS266N, DM74LS266M
