Datasheet
SN54LVC74A, SN74LVC74A
www.ti.com
SCAS287T –JANUARY 1993–REVISED JULY 2013
Timing Requirements
over recommended operating free-air temperature range (unless otherwise noted) (see Figure 1)
SN74LVC74A
–40°C to 125°C –40°C to 125°C
–40°C to 85°C –40°C to 85°C
Recommended Recommended
UNIT
V
CC
= 1.8 V V
CC
= 1.8 V V
CC
= 2.5 V V
CC
= 2.5 V
± 0.15 V ± 0.15 V ± 0.2 V ± 0.2 V
MIN MAX MIN MAX MIN MAX MIN MAX
f
clock
Clock frequency 83 83 83 83 MHz
PRE or CLR low 4.1 4.1 3.3 3.3
t
w
Pulse duration ns
CLK high or low 4.1 4.1 3.3 3.3
Data 3.6 3.6 2.3 2.3
t
su
Setup time before CLK↑ ns
PRE or CLR inactive 2.7 2.7 1.9 1.9
t
h
Hold time, data after CLK↑ 1 1 1 1 ns
Timing Requirements
over recommended operating free-air temperature range (unless otherwise noted) (see Figure 1)
SN74LVC74A
–40°C to 125°C –40°C to 125°C
–40°C to 85°C –40°C to 85°C
Recommended Recommended
UNIT
V
CC
= 3.3 V V
CC
= 3.3 V
V
CC
= 2.7 V V
CC
= 2.7 V
± 0.3 V ± 0.3 V
MIN MAX MIN MAX MIN MAX MIN MAX
f
clock
Clock frequency 83 83 150 100 MHz
PRE or CLR low 3.3 3.3 3.3 3.3
t
w
Pulse duration ns
CLK high or low 3.3 3.3 3.3 3.3
Data 3.4 3.4 3 3
t
su
Setup time before CLK↑ ns
PRE or CLR inactive 2.2 2.2 2 2
t
h
Hold time, data after CLK↑ 1 1 0 1 ns
Switching Characteristics
over recommended operating free-air temperature range (unless otherwise noted) (see Figure 1)
SN54LVC74A
FROM TO V
CC
= 3.3 V
PARAMETER V
CC
= 2.7 V UNIT
(INPUT) (OUTPUT) ± 0.3 V
MIN MAX MIN MAX
f
max
83 100 MHz
CLK 6 1 5.2
t
pd
Q or Q ns
PRE or CLR 6.4 1 5.4
Switching Characteristics
over recommended operating free-air temperature range (unless otherwise noted) (see Figure 1)
SN74LVC74A
–40°C to 125°C –40°C to 125°C
–40°C to 85°C –40°C to 85°C
FROM TO Recommended Recommended
PARAMETER UNIT
(INPUT) (OUTPUT)
V
CC
= 1.8 V V
CC
= 1.8 V V
CC
= 2.5 V V
CC
= 2.5 V
± 0.15 V ± 0.15 V ± 0.2 V ± 0.2 V
MIN MAX MIN MAX MIN MAX MIN MAX
f
max
83 83 83 83 MHz
CLK 1 7.1 1 7.1 1 4.4 1 4.4
t
pd
Q or Q ns
PRE or CLR 1 6.9 1 6.9 1 4.6 1 4.6
t
sk(o)
ns
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