MC74HCT573A ON Semiconductor, MC74HCT573A Datasheet - Page 5

• Manufacturer Part Number: MC74HCT573A
• Description: Octal 3-State Noninverting Transparent Latch with LSTTL Compatible Inputs
• Manufacturer: ON Semiconductor

DEVICE
UNDER
TEST
OUTPUT
INPUT D
ENABLE
Q
Q
Q
*Includes all probe and jig capacitance
t PLH
*Includes all probe and jig capacitance
t r
OUTPUT
t TLH
DEVICE
UNDER
1.3 V
TEST
Figure 5. Test Circuit
Figure 6. Test Circuit
TEST POINT
10%
0.3 V
1.3 V
1.3 V
1.3 V
1.3 V
90%
2.7 V
t PZL
t PZH
Figure 1.
Figure 3.
C L *
1 k
OUTPUT
t PHZ
t PLZ
TEST POINT
CONNECT TO V CC WHEN
TESTING t PLZ AND t PZL .
CONNECT TO GND WHEN
TESTING t PHZ AND t PZH .
t f
C L *
SWITCHING WAVEFORMS
10%
90%
t PHL
t THL
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MC74HCT573A
3.0 V
GND
3.0 V
GND
HIGH
IMPEDANCE
V OL
V OH
HIGH
IMPEDANCE
5
ENABLE
OUTPUT ENABLE
LATCH
INPUT D
LATCH ENABLE
ENABLE
LATCH
D0
D1
D2
D3
D4
D5
D6
D7
Q
2
3
4
5
6
7
8
9
1.3 V
EXPANDED LOGIC DIAGRAM
1.3 V
11
1
1.3 V
t w
t PLH
t SU
Figure 2.
Figure 4.
VALID
1.3 V
t PHL
D
LE
D
LE
D
LE
D
LE
D
LE
D
LE
D
LE
D
LE
t h
Q
Q
Q
Q
Q
Q
Q
Q
19
18
17
16
15
14
13
12
3.0 V
GND
3.0 V
GND
3.0 V
GND
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7