MC74HCT245 ONSEMI [ON Semiconductor], MC74HCT245 Datasheet - Page 4

• Manufacturer Part Number: MC74HCT245
• Description: Octal 3-State Noninverting Bus Transceiver with LSTTL Compatible Inputs
• Manufacturer: ONSEMI [ON Semiconductor]

OUTPUT
A OR B
B OR A
INPUT
*Includes all probe and jig capacitance
t PLH
t r
DEVICE
UNDER
TEST
t TLH
10%
0.3 V
1.3 V
1.3 V
90%
2.7 V
Figure 1.
Figure 3.
OUTPUT
TEST POINT
C L *
t f
t PHL
SWITCHING WAVEFORMS
t THL
3.0 V
GND
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MC74HCT245A
DIRECTION
4
OUTPUT
ENABLE
A OR B
A OR B
DEVICE
UNDER
TEST
*Includes all probe and jig capacitance
1.3 V
1.3 V
OUTPUT
1.3 V
1.3 V
t PZL
t PZH
Figure 4. Test Circuit
TEST POINT
Figure 2.
t PHZ
t PLZ
C L *
1 k
1.3 V
CONNECT TO V CC WHEN
TESTING t PLZ AND t PZL .
CONNECT TO GND WHEN
TESTING t PHZ AND t PZH .
10%
90%
3.0 V
GND
3.0 V
GND
HIGH
IMPEDANCE
V OL
V OH
HIGH
IMPEDANCE