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M54HCT74 Datasheet(PDF) 5 Page - STMicroelectronics

Part No. M54HCT74
Description  DUAL D TYPE FLIP FLOP WITH PRESET AND CLEAR
Download  11 Pages
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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M54HCT74 Datasheet(HTML) 5 Page - STMicroelectronics

 
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AC ELECTRICAL CHARACTERISTICS (CL =50 pF, Input tr =tf =6 ns)
Symbol
Parameter
Test Conditions
Value
Unit
VCC
(V)
TA =25
oC
54HC and 74HC
-40 to 85
oC
74HC
-55 to 125
oC
54HC
Min.
Typ.
Max.
Min.
Max.
Min.
Max.
tTLH
tTHL
Output Transition
Time
4.5
8
151922
ns
tPLH
tPHL
Propagation
Delay Time
(CLOCK - Q)
4.5
21
33
41
50
ns
tPLH
tPHL
Propagation
Delay Time
(CL, PR - Q, Q)
4.5
18
30
38
45
ns
fMAX
Maximum Clock
Frequency
4.5
27
48
22
18
MHz
tW(H)
tW(L)
Minimum Pulse
Width
(CLOCK)
4.5
6
151923
ns
tW(L)
Minimum Pulse
Width
(CL, PR)
4.5
8
151923
ns
ts
Minimum Set-up
Time
4.5
7
151923
ns
th
Minimum Hold
Time
4.5
0
0
0
ns
tREM
Minimum
Removal Time
(CL, PR)
4.5
15
56
58
ns
CIN
Input Capacitance
5
10
10
10
pF
CPD (*)
Power Dissipation
Capacitance
32
pF
(*) 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 operting current can be obtained by the following equation. ICC(opr) = CPD
•VCC •fIN +ICC/2 (per FLIP/FLOP)
M54/M74HCT74
5/11


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