74HC74 Datasheet, PDF (5/8 Pages) NXP Semiconductors – Dual D-type flip-flop with set and reset; positive-edge trigger

74HC74
SWITCHING WAVEFORMS
t_f
t_r
CLOCK
90%
50%
t_w
V_CC
SET OR
50%
RESET
V_CC
GND
10%
GND
t_PHL
t_w
1/f_max
Q OR Q
50%
Q or Q
90%
50%
10%
t_PLH
t_TLH
t_PHL
t_THL
t_PLH
Q OR Q
50%
t_rec
CLOCK
V_CC
50%
GND
Figure 1.
Figure 2.
VALID
V_CC
DATA
50%
GND
t_su
t_h
V_CC
50%
CLOCK
GND
Figure 3.
DEVICE
UNDER
TEST
TEST POINT
OUTPUT
C_L*
*Includes all probe and jig capacitance
Figure 4.
4, 10
SET
2, 12
DATA
1, 13
RESET
3, 11
CLOCK
Figure 5. EXPANDED LOGIC DIAGRAM
5, 9
Q
6, 8
Q
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