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M74HC273 Datasheet(PDF) 5 Page - STMicroelectronics

Part # M74HC273
Description  OCTAL D TYPE FLIP FLOP WITH CLEAR
PDF  11 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M74HC273 Datasheet(HTML) 5 Page - STMicroelectronics

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AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6ns)
CAPACITIVE CHARACTERISTICS
1) CPD 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. ICC(opr) = CPD x VCC x fIN + ICC/8 (per FLIP
FLOP), and the total CPD when n pcs of FLIP FLOP operate can be gained by the following equations: CPD (total) = 32 + 11 x n
Symbol
Parameter
Test Conditions
Value
Unit
VCC
(V)
TA = 25°C
-40 to 85°C
-55 to 125°C
Min.
Typ.
Max.
Min.
Max.
Min.
Max.
tTLH tTHL Output Transition
Time
2.0
25
75
95
110
ns
4.5
7
151922
6.0
6
131619
tPLH tPHL Propagation Delay
Time
(CLOCK - Q)
2.0
54
145
180
220
ns
4.5
18
29
36
44
6.0
15
25
31
37
tPHL
Propagation Delay
Time
(CLEAR - Q)
2.0
60
160
200
240
ns
4.5
20
32
40
48
6.0
17
27
34
41
fMAX
Maximum Clock
Frequency
2.0
6
18
4.8
4
MHz
4.5
30
56
24
20
6.0
35
66
28
24
tW(H)
tW(L)
Minimum Pulse
Width (CLOCK)
2.0
28
75
95
110
ns
4.5
7
151922
6.0
6
131619
tW(L)
Minimum Pulse
Width (CLEAR)
2.0
28
75
95
110
ns
4.5
7
151922
6.0
6
131619
ts
Minimum Set-up
Time
2.0
20
75
95
110
ns
4.5
4
151922
6.0
3
131619
th
Minimum Hold
Time
2.0
0
0
0
ns
4.5
0
0
0
6.0
0
0
0
tREM
Minimum Removal
Time (CLEAR)
2.0
16
50
65
75
ns
4.5
4
101315
6.0
3
9
11
13
Symbol
Parameter
Test Condition
Value
Unit
VCC
(V)
TA = 25°C
-40 to 85°C
-55 to 125°C
Min.
Typ.
Max.
Min.
Max.
Min.
Max.
CIN
Input Capacitance
5.0
5
101010
pF
CPD
Power Dissipation
Capacitance (note
1)
5.0
43
pF



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