Datasheet

 
  
 
SCLS399J − APRIL 1998 − REVISED APRIL 2005
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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 SN54LV273A SN74LV273A
UNIT
MIN MAX MIN MAX MIN MAX
UNIT
t
w
Pulse duration
CLR low 6.5 7 7
ns
t
w
Pulse duration
CLK high or low
7 8.5 8.5
ns
t
su
Setup time, data before CLK↑
Data 8.5 10.5 10.5
ns
t
su
Setup time, data before CLK↑
CLR
inactive 4 4 4
ns
t
h
Hold time, data after CLK↑ 0.5 1 1 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 SN54LV273A SN74LV273A
UNIT
MIN MAX MIN MAX MIN MAX
UNIT
t
w
Pulse duration
CLR low 5 6 6
ns
t
w
Pulse duration
CLK high or low
5 6.5 6.5
ns
t
su
Setup time, data before CLK↑
Data 5.5 6.5 6.5
ns
t
su
Setup time, data before CLK↑
CLR
inactive 2.5 2.5 2.5
ns
t
h
Hold time, data after CLK↑ 1 1 1 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 SN54LV273A SN74LV273A
UNIT
MIN MAX MIN MAX MIN MAX
UNIT
t
w
Pulse duration
CLR low 5 5 5
ns
t
w
Pulse duration
CLK high or low
5 5 5
ns
t
su
Setup time, data before CLK↑
Data 4.5 4.5 4.5
ns
t
su
Setup time, data before CLK↑
CLR
inactive 2 2 2
ns
t
h
Hold time, data after CLK↑ 1 1 1 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
TO
LOAD
T
A
= 25°C SN54LV273A SN74LV273A
UNIT
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
LOAD
CAPACITANCE
MIN TYP MAX MIN MAX MIN MAX
UNIT
f
max
C
L
= 15 pF 55* 95* 45* 45
MHz
f
max
C
L
= 50 pF 45 75 40 40
MHz
t
pd
CLK Q
C
L
= 15 pF
10.4* 18.3* 1* 20.5* 1 20.5
ns
t
PHL
CLR Q
C
L
= 15 pF
10.3* 19* 1* 21* 1 21
ns
t
pd
CLK Q 12.9 22.1 1 25 1 25
t
PHL
CLR Q
C
L
= 50 pF
13.1 22.8 1 25.5 1 25.5
ns
t
sk(o)
C
L
= 50 pF
2 2
ns
* On products compliant to MIL-PRF-38535, this parameter is not production tested.
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