TEXAS INSTRUMENTS CD54HC283 CD74HC283 CD54HCT283 CD74HCT283 High-Speed CMOS Logic 4-Bit Binary Full Adder with Fast Carry handbook
Datasheet
The ’HC283 and ’HCT283 binary full adders add two 4-bit binary numbers and generate a carry-out bit if the sum exceeds 15. This device can be used with either all active-high operands (positive logic) or with all active-low operands (negative logic).