SN74LV4040A-EP Datasheet, PDF (4/12 Pages) Texas Instruments – 12 BIT ASYNCHRONOUS BINARY COUNTERS

SN74LV4040A-EP
12 BIT ASYNCHRONOUS BINARY COUNTERS
SGDS030 – SEPTEMBER 2007
www.ti.com
Timing Requirements
over recommended operating free-air temperature range, V_CC = 2.5 V ± 0.2 V (unless otherwise noted) (see Figure 1)
T_A = 25°C
MIN MAX
MIN MAX UNIT
t_w
Pulse duration
CLK high or low
CLR high
7
7
ns
6.5
6.5
t_su
Setup time
CLR inactive before CLK↓
6.5
6.5
ns
Timing Requirements
over recommended operating free-air temperature range, V_CC = 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1)
T_A = 25°C
MIN MAX
MIN MAX UNIT
t_w
Pulse duration
CLK high or low
CLR high
5
5
ns
5
5
t_su
Setup time
CLR inactive before CLK↓
5
5
ns
Timing Requirements
over recommended operating free-air temperature range, V_CC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
T_A = 25°C
MIN MAX
MIN MAX
t_w
Pulse duration
CLK high or low
CLR high
5
5
5
5
t_su
Setup time
CLR inactive before CLK↓
5
5
UNIT
ns
ns
Switching Characteristics
over recommended operating free-air temperature range, V_CC = 2.5 V ± 0.2 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
LOAD
CAPACITANCE
T_A = 25°C
MIN TYP MAX
MIN MAX
f_max
C_L = 50 pF
40
95
35
t_PLH
t_PHL
CLK
Q_A
C_L = 50 pF
10.5 24.1
10.5 24.1
1
28
1
28
t_PHL
CLR
Any Q
C_L = 50 pF
11.7 24.5
1
28
Δt_pd
Q_n
Q_n+1
C_L = 50 pF
1.7 11.1
10.8
UNIT
MHz
ns
ns
ns
4
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