參數(shù)資料
型號: HEF4532BP
廠商: NXP SEMICONDUCTORS
元件分類: 通用總線功能
英文描述: 8-input priority encoder
中文描述: 4000/14000/40000 SERIES, 8-BIT ENCODER, PDIP16
封裝: PLASTIC, SOT-38-1, DIP-16
文件頁數(shù): 4/8頁
文件大小: 99K
代理商: HEF4532BP
January 1995
4
Philips Semiconductors
Product specification
8-input priority encoder
HEF4532B
MSI
TRUTH TABLE
Notes
1.
2.
3.
H = HIGH state (the more positive voltage)
L = LOW state (the less positive voltage)
X = state is immaterial
LOGIC EQUATIONS
AC CHARACTERISTICS
V
SS
= 0 V; T
amb
= 25
°
C; input transition times
20 ns
INPUTS
OUTPUTS
E
in
L
H
H
H
H
H
H
H
H
H
I
7
X
L
H
L
L
L
L
L
L
L
I
6
X
L
X
H
L
L
L
L
L
L
I
5
X
L
X
X
H
L
L
L
L
L
I
4
X
L
X
X
X
H
L
L
L
L
I
3
X
L
X
X
X
X
H
L
L
L
I
2
X
L
X
X
X
X
X
H
L
L
I
1
X
L
X
X
X
X
X
X
H
L
I
0
X
L
X
X
X
X
X
X
X
H
GS
O
2
L
L
H
H
H
H
L
L
L
L
O
1
L
L
H
H
L
L
H
H
L
L
O
0
L
L
H
L
H
L
H
L
H
L
E
out
L
H
L
L
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
O
2
O
1
O
0
E
out
GS
= E
in
(I
4
+
I
5
+
I
6
+
I
7
)
= E
in
(I
2
I
4
I
5
+
I
3
I
4
I
5
+
I
6
+
I
7
)
= E
in
(I
1
I
2
I
4
I
6
+
I
3
I
4
I
6
+
I
5
I
6
+
I
7
)
= E
in
I
0
I
1
I
2
I
3
I
4
I
5
I
6
I
7
= E
in
(I
0
+
I
1
+
I
2
+
I
3
+
I
4
+
I
5
+
I
6
+
I
7
)
V
DD
V
TYPICAL FORMULA FOR P (
μ
W)
Dynamic power
dissipation per
package (P)
5
1 620 f
i
+ ∑
(f
o
C
L
)
×
V
DD2
6 600 f
i
+ ∑
(f
o
C
L
)
×
V
DD2
15 970 f
i
+ ∑
(f
o
C
L
)
×
V
DD2
where
f
i
= input freq. (MHz)
f
o
= output freq. (MHz)
C
L
= load capacitance (pF)
(f
o
C
L
) = sum of outputs
V
DD
= supply voltage (V)
10
15
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