The MC14008B 4−bit full adder is constructed with MOS P−Channel and N−Channel enhancement mode devices in a single monolithic structure. This device consists of four full adders with fast internal look−ahead carry output. It is useful in binary addition and other arithmetic applications. The fast parallel carry output bit allows high−speed operation when used with other adders in a system.
   
Features
• Look−Ahead Carry Output
• Diode Protection on All Inputs
• All Outputs Buffered
• Supply Voltage Range = 3.0 Vdc to 18 Vdc
• Capable of Driving Two Low−Power TTL Loads or One Low−Power Schottky TTL Load Over the Rated Temperature Range
• Pin−for−Pin Replacement for CD4008B
• Pb−Free Packages are Available*