參數(shù)資料
型號: 74HC51
廠商: Hitachi,Ltd.
英文描述: 2-wide 2-input, 2-wide 3-input AND-OR-INVERT Gate
中文描述: 2,寬2 -輸入,2寬3輸入與或-反轉(zhuǎn)門
文件頁數(shù): 4/9頁
文件大?。?/td> 62K
代理商: 74HC51
M74HC51
4/9
AC ELECTRICAL CHARACTERISTICS
(C
L
= 50 pF, Input t
r
= t
f
= 6ns)
CAPACITIVE CHARACTERISTICS
1) C
is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without
load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. I
CC(opr)
= C
PD
x V
CC
x f
IN
+ I
CC
TEST CIRCUIT
C
L
= 50pF or equivalent (includes jig and probe capacitance)
R
T
= Z
OUT
of pulse generator (typically 50
)
Symbol
Parameter
Test Condition
Value
Unit
V
CC
(V)
T
A
= 25
°
C
-40 to 85
°
C
-55 to 125
°
C
Min.
Typ.
Max.
Min.
Max.
Min.
Max.
t
TLH
t
THL
Output Transition
Time
2.0
4.5
6.0
2.0
4.5
6.0
30
8
7
39
13
11
75
15
13
100
20
17
95
19
16
125
25
21
110
22
19
150
30
26
ns
t
PLH
t
PHL
Propagation Delay
Time
ns
Symbol
Parameter
Test Condition
Value
Unit
V
CC
(V)
T
A
= 25
°
C
-40 to 85
°
C
-55 to 125
°
C
Min.
Typ.
Max.
Min.
Max.
Min.
Max.
C
IN
C
PD
Input Capacitance
Power Dissipation
Capacitance (note
1)
5.0
5
10
10
10
pF
5.0
32
pF
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