HD74LV74A Datasheet, PDF (8/16 Pages) Hitachi Semiconductor – Dual D-type Flip Flops with Preset and Clear

HD74LV74A
Switching Characteristics (cont)
• V_CC = 3.3 ± 0.3 V
Item
Maximum
clock
frequency
Symbol
t_max
Propagation t_PLH
delay time
t_PHL
Setup time
t_su
Hold time
t_h
Pulse width t_w
Ta = 25°C
Ta = –40 to 85°C
Min Typ Max Min Max
80 140 — 70
—
Unit
MHz
50 90 — 45
—
— 6.9 12.3 1.0
14.5
ns
— 7.9 11.9 1.0
14.0
— 9.2 15.8 1.0
18.0
— 10.2 15.4 1.0
17.5
6.0 — — 7.0
—
ns
5.0 — — 5.0
—
0.5 — — 0.5
—
ns
6.0 — — 7.0
—
ns
6.0 — — 7.0
—
Test Conditions
C_L = 15 pF
FROM
(Input)
TO
(Output)
C_L = 50 pF
C_L = 15 pF
C_L = 50 pF
PRE/CLR Q or Q
CLK
PRE/CLR Q or Q
CLK
Data
PRE or CLR inactive
PRE or CLR “L”
CLK “H” or “L”
8