HD74HC83

HD74HC83 4-bit Binary Full Adder (with Fast Carry) REJ03D0554-0200 (Previous ADE-205-426) Rev.2.00 Oct 06, 2005 Description This improved full adder performs the addition of two 4-bit binary numbers. The sum (Σ) output are provided for each bit and the resultant carry (C4) is obtained from the fourth bit. This adder features full internal look ahead across all four bit generating the carry term in ten nanoseconds typically. This provides the system designer with partial look-ahead performance at the economy and reduced package count of a ripple-carry implementation. Features High Speed Operation: tpd (Ai or Bi to Zi) = 16 ns typ (CL = 50 pF) High Output Current: Fanout of 10 LSTTL Loads Wide Operating Voltage: VCC = 2 to 6 V Low Input Current: 1 µA max Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C) Ordering Information Part Name Package Type Package Code (Previous Code) Package Abbreviation HD74HC83FPEL SOP-16 pin (JEITA) PRSP0016DH-B FP (FP-16DAV) HD74HC83RPEL SOP-16 pin (JEDEC) PRSP0016DG-A (FP-16DNV) RP Note: Please consult the sales office for the above package availability. Taping Abbreviation (Quantity) EL (2,000 pcs/reel) EL (2,500 pcs/reel) Rev.2.00, Oct 06, 2005 page 1 of 6 HD74HC83 Function Table Outputs A1 / A3 Inputs B1 / B3 A1 / A3 A1 / A3 When C0 = L / When C2 = L Σ1 / Σ3 Σ2 / Σ4 C2 / C4 When C0 = H / When C2 = H Σ1 / Σ3 Σ2 / Σ4 C2 / C4 LLL L LLLHLL HLL LHLLLHL LHL LHLLLHL HHL L LHLHHL L LHL LH...