參數(shù)資料
型號: M74HC279C1R
廠商: 意法半導(dǎo)體
英文描述: QUAD S - R LATCH
中文描述: 四碼- R鎖存
文件頁數(shù): 4/10頁
文件大?。?/td> 239K
代理商: M74HC279C1R
AC ELECTRICAL CHARACTERISTICS
(C
L
= 50 pF, Input t
r
= t
f
= 6 ns)
Symbol
Parameter
Test Conditions
Value
-40 to 85
o
C
74HC
Min.
Unit
V
CC
(V)
T
A
= 25
o
C
54HC and 74HC
Min.
Typ.
30
-55 to 125
o
C
54HC
Min.
Max.
75
15
13
130
26
22
100
20
17
120
24
20
10
Max.
95
19
16
165
33
28
125
25
21
150
30
26
10
Max.
110
22
19
195
39
33
150
30
26
180
36
31
10
t
TLH
t
THL
Output Transition
Time
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
ns
8
7
t
PLH
t
PHL
Propagation
Delay Time
(S1, S2 - Q)
45
15
13
38
12
10
42
14
12
5
18
ns
t
PLH
t
PHL
Propagation
Delay Time
(S - Q)
ns
t
PHL
Propagation
Delay Time
(R - Q)
ns
C
IN
Input Capacitance
Power Dissipation
Capacitance
pF
C
PD
(*)
pF
(*) C
PD
isdefined asthe value ofthe IC’sinternal equivalent capactance which is calculated from the operating current consumption without load.
(Refer to Test Circuit).Average operting current can be obtained by thefollowingequation. I
CC
(opr) = C
PD
V
CC
f
IN
+ I
CC
SWITCHING CHARACTERISTICS TEST WAVEFORM
M54/M74HC279
4/10
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