DM54L110W is a dual J-K flip-flop mil/spec

National Semiconductor DM54L110W IC

​This is a highly-reliable, military-grade integrated circuit manufactured by National Semiconductor (now part of Texas Instruments).

• ​Specs: The DM54L110W is a dual J-K flip-flop in the low-power TTL logic family. It meets the MIL-STD-883B military standard for high-reliability components. The "W" suffix indicates a ceramic flatpack package, and the date code 906-603 points to a manufacturing date in the 3rd week of 1990