參數(shù)資料
型號(hào): CD74HC4002NSR
廠商: Texas Instruments, Inc.
英文描述: High-Speed CMOS Logic Dual 4-Input NOR Gate
中文描述: 高速CMOS邏輯雙路4輸入或非門
文件頁數(shù): 4/12頁
文件大?。?/td> 344K
代理商: CD74HC4002NSR
4
Switching Specifications
Input t
r
, t
f
= 6ns
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
TYP
MAX
MAX
MAX
HC TYPES
Propagation Delay,
nA, nB, nC, nD to nY
t
PLH,
t
PHL
C
L
= 50pF
2
-
100
125
150
ns
4.5
-
20
25
30
ns
6
-
17
21
26
ns
C
L
= 15pF
5
8
-
-
-
ns
Output Transition Times
(Figure 1)
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
IN
-
-
-
10
10
10
pF
Power Dissipation
Capacitance (Notes 2, 3)
C
PD
C
L
= 15pF
5
22
-
-
-
pF
NOTES:
2. C
PD
is used to determine the dynamic power consumption, per gate.
3. P
D
= V
CC2
f
i
(C
PD
+ C
L
) where f
i
= Input Frequency, C
L
= Output Load Capacitance, V
CC
= Supply Voltage.
Test Circuit and Waveform
FIGURE 1. HC AND HCU 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%
CD54HC4002, CD74HC4002
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