MC74HC174A Datasheet, PDF (4/8 Pages) ON Semiconductor – Hex D Flip-Flop with Common Clock and Reset

MC74HC174A
CLOCK ⁹
D0 ³
RESET ¹
D1 ⁴
EXPANDED LOGIC DIAGRAM
C
Q
D
R
2 _Q0
C
Q
D
R
5 _Q1
D2 ⁶
C
Q
D
R
7 _Q2
D3 ¹¹
C
Q
D
R
10 _Q3
D4 ¹³
C
Q
D
R
12 _Q4
D5 ¹⁴
C
Q
D
R
15 _Q5
CLOCK
tr
tf
90%
50%
10%
tw
1/fmax
tPLH
tPHL
90%
Q 50%
10%
tTLH
tTHL
Figure 1.
DATA
CLOCK
VALID
50%
tsu
th
50%
Figure 3.
SWITCHING WAVEFORMS
VCC
tw
RESET
VCC
50%
GND
GND
tPHL
Q
CLOCK
trec
VCC
50%
GND
Figure 2.
TEST POINT
OUTPUT
VCC
DEVICE
UNDER
GND
TEST
CL*
VCC
*Includes all probe and jig capacitance
GND
Figure 4. Test Circuit
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