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CD74HCT4020M Arkusz danych(PDF) 7 Page - Texas Instruments

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Numer części CD74HCT4020M
Szczegółowy opis  High-Speed CMOS Logic 14-Stage Binary Counter
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Producent  TI1 [Texas Instruments]
Strona internetowa  http://www.ti.com
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CD74HCT4020M Arkusz danych(HTML) 7 Page - Texas Instruments

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7
HCT TYPES
Propagation Delay Time
(Figure 2)
tPLH,
tPHL
CL = 50pF
4.5
-
-
40
-
50
-
60
ns
CP to Q1’ Output
CL =15pF
5
-
17
-
-
-
-
-
ns
Qn to Qn + 1
tPLH,
tPHL
CL = 50pF
4.5
-
-
15
-
19
-
22
ns
CL =15pF
5
-
6
-
-
-
-
-
ns
MR to Qn
tPLH,
tPHL
CL = 50pF
4.5
-
-
40
-
50
-
60
ns
CL =15pF
5
-
17
-
-
-
-
-
ns
Output Transition
tTLH,tTHL CL = 50pF
4.5
-
-
15
-
19
-
22
ns
Input Capacitance
CIN
CL =15pF
-
-
-
10
-
10
-
10
pF
Power Dissipation Capaci-
tance
(Notes 3, 4)
CPD
CL =15pF
5
-
30
-
-
-
-
-
pF
NOTES:
3. CPD is used to determine the dynamic power consumption, per package.
4. PD = VCC
2 f
i (CPD + CL) where fi = Input Frequency, CL = Output Load Capacitance, VCC = Supply Voltage.
Switching Specifications Input tr, tf = 6ns (Continued)
PARAMETER
SYMBOL
TEST
CONDITIONS
VCC
(V)
25oC
-40oC TO 85oC
-55oC TO 125oC
UNITS
MIN
TYP
MAX
MIN
MAX
MIN
MAX
Test Circuits and Waveforms
NOTE: Outputs should be switching from 10% VCC to 90% VCC in
accordance with device truth table. For fMAX, input duty cycle = 50%.
FIGURE 1. HC CLOCK PULSE RISE AND FALL TIMES AND
PULSE WIDTH
NOTE: Outputs should be switching from 10% VCC to 90% VCC in
accordance with device truth table. For fMAX, input duty cycle = 50%.
FIGURE 2. HCT CLOCK PULSE RISE AND FALL TIMES AND
PULSE WIDTH
CLOCK
90%
50%
10%
GND
VCC
trCL
tfCL
50%
50%
tWL
tWH
10%
tWL + tWH =
fCL
I
CLOCK
2.7V
1.3V
0.3V
GND
3V
trCL = 6ns
tfCL = 6ns
1.3V
1.3V
tWL
tWH
0.3V
tWL + tWH =
fCL
I
CD54HC4020, CD74HC4020, CD54HCT4020, CD74HCT4020


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