參數(shù)資料
型號(hào): HEF4555BD
廠商: NXP SEMICONDUCTORS
元件分類: 通用總線功能
英文描述: Dual 1-of-4 decoder/demultiplexer
中文描述: 4000/14000/40000 SERIES, OTHER DECODER/DRIVER, TRUE OUTPUT, CDIP16
封裝: SOT-74, CERDIP-16
文件頁(yè)數(shù): 4/4頁(yè)
文件大小: 36K
代理商: HEF4555BD
January 1995
4
Philips Semiconductors
Product specification
Dual 1-of-4 decoder/demultiplexer
HEF4555B
MSI
AC CHARACTERISTICS
V
SS
= 0 V; T
amb
= 25
°
C; C
L
= 50 pF; input transition times
20 ns
APPLICATION INFORMATION
Some examples of applications for the HEF4555B are:
Code conversion.
Address decoding.
Demultiplexing: when using the enable input as data input.
V
DD
V
SYMBOL
MIN.
TYP.
MAX.
TYPICAL EXTRAPOLATION
FORMULA
Propagation delays
A
n
O
n
HIGH to LOW
5
115
45
30
140
55
40
125
50
30
150
55
40
60
30
20
60
30
20
230 ns
90 ns
65 ns
280 ns
105 ns
75 ns
250 ns
95 ns
65 ns
295 ns
110 ns
75 ns
120 ns
60 ns
40 ns
120 ns
60 ns
40 ns
88 ns
+
(0,55 ns/pF) C
L
34 ns
+
(0,23 ns/pF) C
L
22 ns
+
(0,16 ns/pF) C
L
113 ns
+
(0,55 ns/pF) C
L
44 ns
+
(0,23 ns/pF) C
L
32 ns
+
(0,16 ns/pF) C
L
98 ns
+
(0,55 ns/pF) C
L
39 ns
+
(0,23 ns/pF) C
L
22 ns
+
(0,16 ns/pF) C
L
123 ns
+
(0,55 ns/pF) C
L
44 ns
+
(0,23 ns/pF) C
L
32 ns
+
(0,16 ns/pF) C
L
10 ns
+
((1,0 ns/pF) C
L
9 ns
+
(0,42 ns/pF) C
L
6 ns
+
(0,28 ns/pF) C
L
10 ns
+
(1,0 ns/pF) C
L
9 ns
+
(0,42 ns/pF) C
L
6 ns
+
(0,28 ns/pF) C
L
10
15
5
10
15
5
10
15
5
10
15
5
10
15
5
10
15
t
PHL
LOW to HIGH
t
PLH
E
n
O
n
HIGH to LOW
t
PHL
LOW to HIGH
t
PLH
Output transition times
HIGH to LOW
t
THL
LOW to HIGH
t
TLH
V
DD
V
TYPICAL FORMULA FOR P (
μ
W)
Dynamic power
dissipation per
package (P)
5
4500 f
i
+ ∑
(f
o
C
L
)
×
V
DD2
18 800 f
i
+ ∑
(f
o
C
L
)
×
V
DD2
45 700 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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