This is one of the TTL types.
Part Number : DM74LS00
Function : Quad 2-Input NAND Gate
Package : DIP 14 Pin
Manufacturers : Fairchild Semiconductor
This device contains four independent gates each of which performs the logic NAND function.
Alternate Military/Aerospace device (54LS00) is available. Contact a Fairchild Semiconductor Sales Office/Distributor for specifications.
Other data sheets within the file :
DM7400CW, DM7400M, DM7400N, DM74AS00MX, DM74AS00N