參數(shù)資料
型號(hào)： SN74LS181N
廠商： MOTOROLA INC
元件分類： 通用總線功能
英文描述： 4-BIT ARITHMETIC LOGIC UNIT
中文描述： LS SERIES, 4-BIT ARITHMETIC LOGIC UNIT, PDIP24
封裝： PLASTIC, DIP-24
文件頁數(shù)： 3/9頁
文件大?。?/td> 277K
代理商： SN74LS181N
5-334
FAST AND LS TTL DATA
SN54/74LS181
FUNCTION TABLE
MODE SELECT
INPUTS
ACTIVE LOW INPUTS
& OUTPUTS
ACTIVE HIGH INPUTS
& OUTPUTS
S3
S2
S1
S0
LOGIC
(M = H)
ARITHMETIC**
(M = L) (Cn = L)
LOGIC
(M = H)
ARITHMETIC**
(M = L) (Cn = H)
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
L
L
L
L
H
H
H
H
L
L
L
L
H
H
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
A
AB
A + B
Logical 1 minus 1
A + B
B
A
⊕
B
A + B
AB
A
⊕
B
B
A + B
Logical 0 A plus A*
AB
AB
A
A minus 1
AB minus 1
AB minus 1
A
A + B
AB
Logical 0 minus 1
AB
B
A
⊕
B
AB
A + B
A
⊕
B
B
AB
Logical 1 A plus A*
A + B
A + B
A
A
A + B
A + B
A plus (A + B)
AB plus (A + B)
A minus B minus 1
A + B
A plus (A + B)
A plus B
AB plus (A + B)
A + B
A plus AB
(A + B) plus AB
A minus B minus 1
AB minus 1
A plus AB
A plus B
(A + B) plus AB
AB minus 1
AB plus A
AB plus A
A
(A + B) plus A
(A + B) Plus A
A minus 1
L = LOW Voltage Level
H = HIGH Voltage Level
*
*Each bit is shifted to the next more significant position
**Arithmetic operations expressed in 2s complement notation
LOGIC SYMBOLS
ACTIVE LOW OPERANDS
ACTIVE HIGH OPERANDS
GUARANTEED OPERATING RANGES
Symbol
Parameter
Min
Typ
Max
Unit
VCC
Supply Voltage
54
74
4.5
4.75
5.0
5.0
5.5
5.25
V
TA
Operating Ambient Temperature Range
54
74
–55
0
25
25
125
70
°
C
IOH
IOL
Output Current — High
54, 74
–0.4
mA
Output Current — Low
54
74
4.0
8.0
mA
VOH
Output Voltage — High (A = B only)
54, 74
5.5
V
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