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MC74HCT245 View Datasheet(PDF) - ON Semiconductor
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Description
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MC74HCT245
Octal 3-State NonInverting Bus Transceiver with LSTTL Compatible Inputs
ON Semiconductor
MC74HCT245 Datasheet PDF : 9 Pages
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MC74HCT245A
SWITCHING WAVEFORMS
t
r
INPUT
A OR B
t
PLH
OUTPUT
B OR A
2.7 V
1.3 V
0.3 V
90%
1.3 V
10%
t
TLH
Figure 2.
t
f
3.0 V
GND
t
PHL
t
THL
DIRECTION
OUTPUT
ENABLE
A OR B
A OR B
1.3 V
1.3 V
t
PZL
t
PLZ
1.3 V
t
PZH
t
PHZ
1.3 V
3.0 V
1.3 V
GND
3.0 V
GND
HIGH
IMPEDANCE
10% V
OL
90% V
OH
HIGH
IMPEDANCE
Figure 3.
DEVICE
UNDER
TEST
TEST POINT
OUTPUT
C
L
*
*Includes all probe and jig capacitance
Figure 4.
DEVICE
UNDER
TEST
TEST POINT
OUTPUT
1 k
W
C
L
*
CONNECT TO V
CC
WHEN
TESTING t
PLZ
AND t
PZL
.
CONNECT TO GND WHEN
TESTING t
PHZ
AND t
PZH
.
*Includes all probe and jig capacitance
Figure 5. Test Circuit
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