MC74HCT374A Datasheet, PDF (5/8 Pages) ON Semiconductor – Octal 3-State Noninverting D Flip-Flop with LSTTL-Compatible Inputs

CLOCK
Q
tr
tf
2.7 V
1.3 V
0.3 V
tw
1/fmax
tPLH
tPHL
90%
1.3 V
10%
tTLH
tTHL
Figure 1.
MC74HCT374A
SWITCHING WAVEFORMS
VCC
OUTPUT
1.3 V
ENABLE
GND
tPZL tPLZ
Q
1.3 V
tPZH tPHZ
Q
1.3 V
Figure 2.
VALID
DATA
3V
1.3 V
GND
tsu
th
CLOCK
3V
1.3 V
GND
Figure 3.
3V
GND
HIGH
IMPEDANCE
10% _VOL
90% ^VOH
HIGH
IMPEDANCE
DEVICE
UNDER
TEST
TEST POINT
OUTPUT
CL*
TEST CIRCUITS
DEVICE
UNDER
TEST
TEST POINT
OUTPUT
1 kΩ
CL*
CONNECT TO VCC WHEN
TESTING tPLZ AND tPZL
CONNECT TO GND WHEN
TESTING tPHZ AND tPZH
*Includes all probe and jig capacitance
Figure 4.
*Includes all probe and jig capacitance
Figure 5.
CLOCK ¹¹
OUTPUT 1
ENABLE
EXPANDED LOGIC DIAGRAM
D0
3
DQ
D1
4
DQ
D2
7
DQ
D3
8
DQ
D4
13
DQ
D5
14
DQ
D6
17
DQ
D7
18
DQ
C
C
C
C
C
C
C
C
2
5
6
9
12
15
16
19
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
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