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HD74LS283 Datasheet, PDF (6/8 Pages) Hitachi Semiconductor – 4-bit Binary Full Adders
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HD74LS283
Testing Table
Ite From input
m to output
C0→Σi or C4
tPLH
tPHL
Ai or Bi
→Σi or C4
B4
GND
GND
GND
GND
GND
GND
IN
GND
GND
GND
4.5V
IN
A4
GND
4.5V
GND
GND
GND
IN
GND
GND
GND
GND
IN
4.5V
B3
GND
GND
GND
GND
GND
IN
GND
GND
GND
4.5V
IN
GND
Inputs
A3
B2
A2
GND GND GND
4.5V GND 4.5V
GND GND GND
GND
IN
GND
GND
IN
GND
IN
GND
GND
GND GND GND
GND GND GND
GND
IN
4.5V
4.5V
IN
GND
IN
4.5V
GND
GND GND GND
B1
GND
GND
GND
IN
GND
GND
GND
4.5V
IN
GND
GND
GND
A1
GND
4.5V
IN
GND
GND
GND
GND
IN
4.5V
GND
GND
GND
C0
IN
IN
GND
GND
GND
GND
GND
GND
GND
GND
C4
—
OUT
—
—
—
—
—
—
—
OUT
Outputs
Σ4
Σ3
Σ2
—
—
—
OUT OUT OUT
—
—
—
— — OUT
— OUT —
OUT — —
— — OUT
— OUT OUT
OUT OUT —
OUT — —
Σ1
OUT
OUT
OUT
—
—
—
OUT
—
—
—
Rev.3.00, Jul.15.2005, page 6 of 7
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