NBCD Adder

The MC14560B adds two 4–bit numbers in NBCD (natural binary coded decimal) format, resulting in sum and carry outputs in NBCD code.
This device can also subtract when one set of inputs is complemented with a 9’s Complementer (MC14561B).
All inputs and outputs are active high. The carry input for the least significant digit is connected to VSS for no carry in.

• Diode Protection on All Inputs
• 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