MC74HC273A_05 Datasheet, PDF (6/10 Pages) ON Semiconductor – Octal D Flip−Flop with Common Clock and Reset High−Performance Silicon−Gate CMOS

MC74HC273A
SWITCHING WAVEFORMS
t_r
t_f
t_w
CLOCK
90%
50%
10%
V_CC
RESET
50%
GND
V_CC
GND
t_w
t_PHL
90%
Q 50%
10%
1/f_max
t_PLH
t_PHL
t_TLH
t_THL
Q
CLOCK
50%
t_rec
V_CC
50%
GND
Figure 1.
Figure 2.
VALID
V_CC
DATA
50%
GND
t_su
t_h
V_CC
CLOCK
50%
GND
Figure 3.
DEVICE
UNDER
TEST
TEST POINT
OUTPUT
C_L*
*Includes all probe and jig capacitance
Figure 4. Test Circuit
D0 ³
D1 ⁴
D2 ⁷
DATA
INPUTS
D3 ⁸
D4 ¹³
D5 ¹⁴
D6 ¹⁷
D7 ¹⁸
11
1
C
Q
DR
C
Q
DR
C
Q
DR
C
D _RQ
C
Q
DR
C
D _RQ
C
Q
DR
C
D _RQ
2 _Q0
5 _Q1
6 _Q2
9 _Q3
12 _Q4
NONINVERTING
OUTPUTS
15 _Q5
16 _Q6
19 _Q7
Figure 5. Expanded Logic Diagram
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