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SN54AS181B Datasheet(PDF) 6 Page - Texas Instruments

Part # SN54AS181B
Description  ARITHMETIC LOGIC UNITS/FUNCTION GENERATORS
PDF  17 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

SN54AS181B Datasheet(HTML) 6 Page - Texas Instruments

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SN54AS181B, SN74AS181A
ARITHMETIC LOGIC UNITS/FUNCTION GENERATORS
SDAS209B – DECEMBER 1982 – REVISED DECEMBER 1994
6
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
Table 1
SELECTION
ACTIVE-LOW DATA
SELECTION
M = H
M = L; ARITHMETIC OPERATIONS
S3
S2
S1
S0
LOGIC
FUNCTIONS
Cn = L
(no carry)
Cn = H
(with carry)
L
L
L
L
F = A
F = A MINUS 1
F = A
L
L
L
H
F = AB
F = AB MINUS 1
F = AB
L
L
H
L
F = A + B
F = AB MINUS 1
F = AB
L
L
H
H
F = 1
F = MINUS 1 (2’s COMP)
F = ZERO
L
H
L
L
F = A + B
F = A PLUS (A + B)
F = A PLUS (A + B) PLUS 1
L
H
L
H
F = B
F = AB PLUS (A + B)
F = AB PLUS (A + B) PLUS 1
L
H
H
L
F = A
⊕ B
F = A MINUS B MINUS 1
F = A MINUS B
L
H
H
H
F = A + B
F = A + B
F = (A + B) PLUS 1
H
L
L
L
F = AB
F = A PLUS (A + B)
F = A PLUS (A + B) PLUS 1
H
L
L
H
F = A
⊕ B
F = A PLUS B
F = A PLUS B PLUS 1
H
L
H
L
F = B
F = AB PLUS (A + B)
F = AB PLUS (A + B) PLUS 1
H
L
H
H
F = A + B
F = (A + B)
F = (A + B) PLUS 1
H
H
L
L
F = 0
F = A PLUS A†
F = A PLUS A PLUS 1
H
H
L
H
F = AB
F = AB PLUS A
F = AB PLUS A PLUS 1
H
H
H
L
F = AB
F = AB PLUS A
F =AB PLUS A PLUS 1
H
H
H
H
F = A
F = A PLUS 1
F = A PLUS 1
† Each bit is shifted to the next more significant position.
Table 2
SELECTION
ACTIVE-HIGH DATA
SELECTION
M = H
M = L; ARITHMETIC OPERATIONS
S3
S2
S1
S0
LOGIC
FUNCTIONS
Cn = H
(no carry)
Cn = L
(with carry)
L
L
L
L
F = A
F = A
F = A PLUS 1
L
L
L
H
F = A + B
F = A + B
F = (A+ B) PLUS 1
L
L
H
L
F = AB
F = A + B
F = (A + B) PLUS 1
L
L
H
H
F = 0
F = MINUS 1 (2’s COMPL)
F = ZERO
L
H
L
L
F = AB
F = A PLUS AB
F = A PLUS AB PLUS 1
L
H
L
H
F = B
F = (A + B) PLUS AB
F =( A + B) PLUS AB PLUS 1
L
H
H
L
F = A
⊕ B
F = A MINUS B MINUS 1
F = A MINUS B
L
H
H
H
F = AB
F = AB MINUS 1
F = A B
H
L
L
L
F = A + B
F = A PLUS AB
F = A PLUS AB PLUS 1
H
L
L
H
F = A
⊕ B
F = A PLUS B
F = A PLUS B PLUS 1
H
L
H
L
F = B
F = (A + B) PLUS AB
F = (A + B) PLUS AB PLUS 1
H
L
H
H
F = AB
F = AB MINUS 1
F = AB
H
H
L
L
F = 1
F = A PLUS A†
F = A PLUS A PLUS 1
H
H
L
H
F = A + B
F = (A + B) PLUS A
F = (A + B) PLUS A PLUS 1
H
H
H
L
F = A + B
F = (A + B) PLUS A
F =(A + B) PLUS A PLUS 1
H
H
H
H
F = A
F = A MINUS 1
F = A
† Each bit is shifted to the next more significant position.



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