MC74HCT573ADWR2G Datasheet, PDF (5/8 Pages) ON Semiconductor – Octal 3-State Noninverting Transparent Latch with LSTTL Compatible Inputs

MC74HCT573A
t_r
INPUT D
t_PLH
Q
2.7 V
1.3 V
0.3 V
90%
1.3 V
10%
t_TLH
SWITCHING WAVEFORMS
t_f
3.0 V
GND
t_PHL
LATCH
ENABLE
1.3 V
t_w
t_PLH
t_PHL
3.0 V
GND
t_THL
Q ^{1.3 V}
Figure 1.
Figure 2.
OUTPUT
3.0 V
ENABLE
1.3 V
VALID
GND
3.0 V
t_PZL
t_PLZ
HIGH
INPUT D
1.3 V
GND
Q
1.3 V
IMPEDANCE
t_PZH t_PHZ
10% V_OL
90% VOH
Q
1.3 V
HIGH
LATCH
ENABLE
t_SU
t_h
1.3 V
3.0 V
GND
IMPEDANCE
Figure 3.
Figure 4.
DEVICE
UNDER
TEST
TEST POINT
OUTPUT
C_L*
*Includes all probe and jig capacitance
Figure 5. Test Circuit
DEVICE
UNDER
TEST
TEST POINT
OUTPUT
1 kΩ
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 6. Test Circuit
D0 ²
D1 ³
D2 ⁴
D3 ⁵
D4 ⁶
D5 ⁷
D6 ⁸
D7 ⁹
EXPANDED LOGIC DIAGRAM
D
Q
LE
D
Q
LE
D
Q
LE
D
Q
LE
D
Q
LE
D
Q
LE
D
Q
LE
D
Q
LE
19 _Q0
18 _Q1
17 _Q2
16 _Q3
15 _Q4
14 _Q5
13 _Q6
12 _Q7
LATCH ENABLE ¹¹
OUTPUT ENABLE ¹
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