參數(shù)資料
型號: CD74HC147NSRG4
廠商: Texas Instruments, Inc.
英文描述: High-Speed CMOS Logic 10- to 4-Line Priority Encoder
中文描述: 高速CMOS邏輯10 - 4線優(yōu)先編碼器
文件頁數(shù): 5/16頁
文件大小: 401K
代理商: CD74HC147NSRG4
5
Power Dissipation Capaci-
tance
(Notes 3, 4)
C
PD
-
5
-
32
-
-
-
-
-
pF
HCT TYPES
Propagation Delay,
Input to Output (Figure 2)
t
PLH
, t
PHL
C
L
= 50pF
4.5
-
-
35
-
44
-
53
ns
5
-
14
-
-
-
-
-
ns
Transition Times (Figure 2)
t
TLH
, t
THL
C
L
= 50pF
4.5
-
-
15
-
19
-
22
ns
Input Capacitance
C
IN
-
-
-
-
10
-
10
-
10
pF
Power Dissipation Capaci-
tance
(Notes 3, 4)
C
PD
-
5
-
42
-
-
-
-
-
pF
NOTES:
3. C
PD
is used to determine the dynamic power consumption, per gate.
4. P
D
= V
CC2
f
i
(C
PD
+ C
L
) where f
i
= Input Frequency, C
L
= Output Load Capacitance, V
CC
= Supply Voltage.
Switching Specifications
Input t
r
, t
f
= 6ns
(Continued)
PARAMETER
SYMBOL
TEST
CONDITIONS
V
CC
(V)
25
o
C
-40
o
C TO 85
o
C
-55
o
C TO 125
o
C
UNITS
MIN
TYP
MAX
MIN
MAX
MIN
MAX
Test Circuits and Waveforms
FIGURE 6. HC AND HCU TRANSITION TIMES AND PROPAGA-
TION DELAY TIMES, COMBINATION LOGIC
FIGURE 7. HCT TRANSITION TIMES AND PROPAGATION
DELAY TIMES, COMBINATION LOGIC
t
PHL
t
PLH
t
THL
t
TLH
90%
50%
10%
50%
10%
INVERTING
OUTPUT
INPUT
GND
V
CC
t
r
= 6ns
t
f
= 6ns
90%
t
PHL
t
PLH
t
THL
t
TLH
2.7V
1.3V
0.3V
1.3V
10%
INVERTING
OUTPUT
INPUT
GND
3V
t
r
= 6ns
t
f
= 6ns
90%
CD54HC147, CD74HC147, CD74HCT147
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