參數(shù)資料
型號(hào): CD54HC20W
廠商: Texas Instruments, Inc.
英文描述: High Speed CMOS Logic Dual 4-Input NAND Gate
中文描述: 高速CMOS邏輯雙路4輸入與非門
文件頁數(shù): 5/6頁
文件大?。?/td> 46K
代理商: CD54HC20W
5
Transition Times (Figure1)
t
TLH
, t
THL
C
L
= 50pF
2
-
-
75
-
95
-
110
ns
4.5
-
-
15
-
19
-
22
ns
6
-
-
13
-
16
-
19
ns
Input Capacitance
C
I
-
-
-
-
10
-
10
-
10
pF
Power Dissipation Capacitance
(Notes 5, 6)
C
PD
-
5
-
26
-
-
-
-
-
pF
HCT TYPES
Propagation Delay, Input to
Output (Figure 2)
t
PLH
, t
PHL
C
L
= 50pF
4.5
-
-
28
-
35
-
42
ns
PropagationDelay,DataInputto
Output Y
t
PLH
, t
PHL
C
L
= 15pF
5
-
11
-
-
-
-
-
ns
Transition Times (Figure 2)
t
TLH
, t
THL
C
L
= 50pF
4.5
-
-
15
-
19
-
22
ns
Input Capacitance
C
I
-
-
-
-
10
-
10
-
10
pF
Power Dissipation Capacitance
(Notes 5, 6)
C
PD
-
5
-
38
-
-
-
-
-
pF
NOTES:
5. C
PD
is used to determine the dynamic power consumption, per gate.
6. 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 1. HC AND HCU TRANSITION TIMES AND PROPAGA-
TION DELAY TIMES, COMBINATION LOGIC
FIGURE 2. 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%
CD74HC20, CD74HCT20
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