4-bit Binary Full Adder
HD74HC83
4-bit Binary Full Adder (with Fast Carry)
REJ03D0554-0200 (Previous ADE-205-426)
Rev.2.00 Oct 06, 2005
Descrip...
Description
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...
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