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KK74HCT21AD Datasheet(PDF) 4 Page - KODENSHI_AUK CORP.

Part # KK74HCT21AD
Description  Dual 4-Input AND Gate
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Manufacturer  KODENSHI [KODENSHI_AUK CORP.]
Direct Link  http://www.kodenshi.co.kr
Logo KODENSHI - KODENSHI_AUK CORP.

KK74HCT21AD Datasheet(HTML) 4 Page - KODENSHI_AUK CORP.

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KK74HCT21A
AC ELECTRICAL CHARACTERISTICS (CL=50pF,Input tr=tf=6.0 ns)
VCC
Guaranteed Limit
Symbol
Parameter
V
25
°C
to
-55
°C
≤85°C
≤125°C
Unit
tPHL, tPLH
Maximum Propagation Delay (Figure 1)
4.5
27
34
41
ns
tTHL, tTLH
Maximum Output Transition Time (Figure 1)
4.5
15
19
22
ns
CIN
Maximum Input Capacitance
5.0
10
10
10
pF
Power Dissipation Capacitance (Per Gate)
TA=25°C,VCC=5.0 V
CPD
Used to determine the no-load dynamic power
consumption:
PD=CPDVCC
2f+ICCVCC
50
pF
0.1
0.1
0.9
0.9
V
1
V
1
V
IH
t
PHL
t
HL
t
PLH
t
LH
GND
V
1
V
1
V = 1.3 V
V = 3.0 V
1
I
Input
Output
0.1
0.1
0.9
0.9
t
THL
t
TLH
0 V
V
OH
Figure 1. Switching Waveforms
PULSE
GENERATOR
DEVICE
UNDER
TEST
V
CC
V
I
V
O
C
50 pF
L
R
T
Termination resistance RT – should
be equal to ZOUT of pulse generators
Figure 2. Test Circuit
4


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