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HCF4018 Scheda tecnica(PDF) 3 Page - STMicroelectronics

Il numero della parte HCF4018
Spiegazioni elettronici  4-BIT ARITHMETIC LOGIC UNIT
PDF  12 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

HCF4018 Scheda tecnica(HTML) 3 Page - STMicroelectronics

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RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Value
Unit
VDD
Supply Voltage : HCC Types
HCF Types
3to 18
3to 15
V
V
VI
Input Voltage
0 to VDD
V
T op
Operating Temperature : HCC Types
HCF Types
– 55 to + 125
–40 to + 85
°C
°C
TRUTH TABLES
Table 1.
Inputs/Outputs Active Low
Inputs/Outputs Active High
Function
Select
S 3
S2
S1
S0
Logic
Function
(M = H)
Arithmetic*
Function
(M = L, Cn =L)
Logic
Function
(M = H)
Arithmetic*
Function
(M = L, Cn =H)
0
0
0
0
A
A minus 1
A
A
0
0
0
1
AB
AB minus 1
A + B
A + B
00
10
A + B
AB minus 1
AB
A + B
0
0
1
1
Logic 1
minus 1
Logic 0
minus 1
0
1
0
0
A + B
A plus (A + B)
AB
A plus AB
0
1
0
1
B
AB plus (A + B)
B
(A + B) plus AB
01
10
A
B
⊕
A minus B minus 1
A
⊕ B
A minus B minus 1
0
1
1
1
A + B
A + B
AB
AB minus 1
1
0
0
0
AB
A plus (A + B)
A + B
A plus AB
10
01
A
⊕ B
A plus B
A
B
⊕
A plus B
1
0
1
0
B
AB plus (A + B)
B
(A + B) plus AB
1
0
1
1
A + B
A + B
AB
AB minus 1
1
1
0
0
Logic 0
A plus A
Logic 1
A plus A
1
1
0
1
AB
AB plus A
A + B
(A + B) plus A
1
1
1
0
AB
AB plus A
A + B
(A + B) plus A
11
11
A
A
A
A minus 1
* Expressed as two’s complement. For arithmetic function with Cn in the opposite state, the resulting function is as show plus 1.
1 = HIGH LEVEL.
0 = LOW LEVEL.
Table 2 : Magnitude Comparison.
Active-high D ata
Active-low Data
Input
C n
Output
C n+ 4
Magni tude
Input
C n
Output
C n+ 4
Magni tude
11
A
≤ B0
0
A
≤ B
01
A < B
1
0
A < B
10
A > B
0
1
A > B
00
A
≥ B1
1
A
≥ B
1 = HIGH LEVEL
0 = LOW LEVEL
HCC/HCF40181B
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