CD74HC283E .

The CD74HC283E is a CMOS logic high-speed 4-bit binary Full Adder with fast-carry. Because of the symmetry of the add function, this device can be used with either all active-high operands (positive logic) or with all active-low operands (negative logic). When using positive logic the carry-in input must be tied low if there is no carry-in.

• Adds two binary numbers
• Full internal look ahead
• Fast ripple carry for economical expansion
• Operates with both positive and negative logic
• Balanced propagation delay and transition times
• Significant power reduction compared to LSTTL logic ICs
• Green product and no Sb/Br