54AC163LMQB.
Counter Single 4-Bit Sync Binary UP 20-Pin CLLCC Rail

From NATIONAL SEMICONDUCTOR

Logic FamilyAC
Logical FunctionCounter
MountingSurface Mount
Number of Elements1
Number of Bits4
Operating Supply Voltage (Max)6 V
Operating Supply Voltage (Min)2 V
Operating Supply Voltage (Typ)2.5/3.3/5 V
Operating Temp Range-55C to 125C
Operating Temperature ClassificationMilitary
PackagingRail
Pin Count20
Propagation Delay Time16.5 ns
Rad HardenedNo
TechnologyCMOS
TypeBinary

External links