Data Sheet
SN54LV123A, SN74LV123A
SCLS393P –APRIL 1998–REVISED OCTOBER 2013
www.ti.com
SWITCHING CHARACTERISTICS
over recommended operating free-air temperature range, V
CC
= 2.5 V ± 0.2 V (unless otherwise noted) (see Figure 3)
–40°C to
–55°C to 125°C –40°C to 125°C
T
A
= 25°C 85°C
PARAMETE FROM TO TEST
SN54LV123A
(1)
SN74LV123A
UNIT
SN74LV123A
R (INPUT) (OUTPUT) CONDITIONS
MIN TYP MAX MIN MAX MIN MAX MIN MAX
A or B Q or Q 14.5 31.4
(2)
1
(2)
37
(2)
1 37 1 37
t
pd
CLR Q or Q C
L
= 15 pF 13 25
(2)
1
(2)
29.5
(2)
1 29.5 1 29.5 ns
CLR trigger Q or Q 15.1 33.4
(2)
1
(2)
39
(2)
1 39 1 39
A or B Q or Q 16.6 36 1 42 1 42 1 42
t
pd
CLR Q or Q C
L
= 50 pF 14.7 32.8 1 34.5 1 34.5 1 34.5 ns
CLR trigger Q or Q 17.4 38 1 44 1 44 1 44
C
L
= 50 pF
C
ext
= 28 pF 197 260 320 320 320 ns
R
ext
= 2 kΩ
C
L
= 50 pF
t
w
(3)
Q or Q C
ext
= 0.01 μF 90 100 110 90 110 90 110 90 110 μs
R
ext
= 10 kΩ
C
L
= 50 pF
C
ext
= 0.1 μF 0.9 1 1.1 0.9 1.1 0.9 1.1 0.9 1.1 ms
R
ext
= 10 kΩ
Δt
w
(4)
C
L
= 50 pF ±1 %
(1) Product Preview
(2) On products compliant to MIL-PRF-38535, this parameter is not production tested.
(3) t
w
= Duration of pulse at Q and Q outputs
(4) Δt
w
= Output pulse-duration variation (Q and Q) between circuits in same package
SWITCHING CHARACTERISTICS
over recommended operating free-air temperature range, V
CC
= 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 3)
–40°C to –40°C to
–55°C to 125°C
T
A
= 25°C 85°C 125°C
FROM TO TEST
SN54LV123A
(1)
PARAMETER UNIT
SN74LV123A SN74LV123A
(INPUT) (OUTPUT) CONDITIONS
MIN TYP MAX MIN MAX MIN MAX MIN MAX
A or B Q or Q 10.2 20.6
(2)
1
(2)
24
(2)
1 24 1 24
t
pd
CLR Q or Q C
L
= 15 pF 9.3 15.8
(2)
1
(2)
18.5
(2)
1 18.5 1 18.5 ns
CLR trigger Q or Q 10.6 22.4
(2)
1
(2)
26
(2)
1 26 1 26
A or B Q or Q 11.8 24.1 1 27.5 1 27.5 1 27.5
t
pd
CLR Q or Q C
L
= 50 pF 10.5 19.3 1 22 1 22 1 22 ns
CLR trigger Q or Q 12.3 25.9 1 29.5 1 29.5 1 29.5
C
L
= 50 pF
C
ext
= 28 pF 182 240 300 300 300 ns
R
ext
= 2 kΩ
C
L
= 50 pF
t
w
(3)
Q or Q C
ext
= 0.01 μF 90 100 110 90 110 90 110 90 110 μs
R
ext
= 10 kΩ
C
L
= 50 pF
C
ext
= 0.1 μF 0.9 1 1.1 0.9 1.1 0.9 1.1 0.9 1.1 ms
R
ext
= 10 kΩ
Δt
w
(4)
C
L
= 50 pF ±1 %
(1) Product Preview
(2) On products compliant to MIL-PRF-38535, this parameter is not production tested.
(3) t
w
= Duration of pulse at Q and Q outputs
(4) Δt
w
= Output pulse-duration variation (Q and Q) between circuits in same package
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