HD74LV4040A Datasheet, PDF (8/17 Pages) Hitachi Semiconductor – 12-stage Binary Counter

HD74LV4040A
Switching Characteristics
• V_CC = 2.5 ± 0.2 V
Ta = 25°C
Item
Symbol Min
Maximum
f_max
50
clock
30
frequency
Propagation t_PLH/t_PHL —
delay time
—
t_PHL
—
—
Propagation ∆t_pd
—
delay time
skew
Setup time t_SU
7.0
Typ
90
60
10.0
12.7
9.9
11.8
3.0
—
Pulse width t_w
7.0 —
7.0 —
Max
—
—
16.0
19.6
15.4
18.0
5.5
—
—
—
Ta = –40 to 85°C
Min
Max
40
—
25
—
Unit
MHz
1.0
18.3
ns
1.0
22.2
1.0
17.5
1.0
20.4
—
6.3
ns
7.0
—
ns
7.0
—
ns
7.0
—
Test Conditions
C_L = 15 pF
C_L = 50 pF
C_L = 15 pF
C_L = 50 pF
C_L = 15 pF
C_L = 50 pF
C_L = 50 pF
FROM TO
(Input) (Output)
CLK
Q₁
CLR
Q_n
Q_n + 1
CLR inactive
before CLK ↓
CLK high or low
CLR high
8