MC74HCT574A_14 Datasheet, PDF (4/7 Pages) ON Semiconductor – Octal 3-State Noninverting D Flip-Flop with LSTTL-Compatible Inputs

MC74HCT574A
EXPANDED LOGIC DIAGRAM
D0
D1
D2
D3
D4
D5
D6
D7
2
3
4
5
6
7
8
9
CLOCK ¹¹
ENABLE 1
OUTPUT
CD
Q
CD
Q
CD
Q
CD
Q
CD
Q
CD
Q
CD
Q
CD
Q
19
18
17
16
15
14
13
12
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
CLOCK
Q
t_r
2.7 V
1.3 V
0.3 V
t_w
90%
1.3 V
10%
1/f_max
t_PLH
t_TLH
t_f
t_PHL
t_THL
Figure 2.
SWITCHING WAVEFORMS
3.0 V
GND
OUTPUT
ENABLE
Q
Q
1.3 V
t_PZL
t_PLZ
1.3 V
t_PZH
t_PHZ
1.3 V
Figure 3.
3.0 V
GND
HIGH
IMPEDANCE
10% V_OL
90% VOH
HIGH
IMPEDANCE
DATA
CLOCK
VALID
1.3 V
t_su
t_h
1.3 V
Figure 4.
DEVICE
UNDER
TEST
3.0 V
GND
3.0 V
GND
TEST POINT
OUTPUT
1 kW
C_L*
DEVICE
UNDER
TEST
TEST POINT
OUTPUT
C_L*
*Includes all probe and jig capacitance
Figure 5. Test Circuit
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
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