The DS1135 from Maxim Integrated is a Delay Line with Delay 6 to 30 ns, Group Delay 6 to 30 nS, Rise time 2 to 2.5 nS, Operating Temperature -40 to 85 Degree C, Storage Temperature -55 to 125 Degree C. Tags: DIP, Tapped. More details for DS1135 can be seen below.