Datasheet

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   
SCLS352H − JULY 1997 − REVISED OCTOBER 2005
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
switching characteristics over recommended operating free-air temperature range,
V
CC
= 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
TO
TEST
T
A
= 25°C SN54AHC123A SN74AHC123A
UNIT
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
TEST
CONDITIONS
MIN TYP MAX MIN MAX MIN MAX
UNIT
t
PLH
A or B
Q or Q
C
L
= 15 pF
9.5* 20.6* 1* 24* 1 24
ns
t
PHL
A or B Q or Q
C
L
= 15 pF
10.2* 20.6* 1* 24* 1 24
ns
t
PLH
CLR
Q or Q
C
L
= 15 pF
7.5* 15.8* 1* 18.5* 1 18.5
ns
t
PHL
CLR
Q or Q
C
L
= 15 pF
9.3* 15.8* 1* 18.5* 1 18.5
ns
t
PLH
CLR trigger
Q or Q
C
L
= 15 pF
10* 22.4* 1* 26* 1 26
ns
t
PHL
CLR trigger Q or Q
C
L
= 15 pF
10.6* 22.4* 1* 26* 1 26
ns
t
PLH
A or B
Q or Q
C
L
= 50 pF
10.5 24.1 1 27.5 1 27.5
ns
t
PHL
A or B Q or Q
C
L
= 50 pF
11.8 24.1 1 27.5 1 27.5
ns
t
PLH
CLR
Q or Q
C
L
= 50 pF
8.9 19.3 1 22 1 22
ns
t
PHL
CLR
Q or Q
C
L
= 50 pF
10.5 19.3 1 22 1 22
ns
t
PLH
CLR trigger
Q or Q
C
L
= 50 pF
11 25.9 1 29.5 1 29.5
ns
t
PHL
CLR trigger Q or Q
C
L
= 50 pF
12.3 25.9 1 29.5 1 29.5
ns
C
L
= 50 pF,
C
ext
= 28 pF,
R
ext
= 2 kΩ
182 240 300 300 ns
t
w
†
Q or Q
C
L
= 50 pF,
C
ext
= 0.01 µF,
R
ext
= 10 kΩ
90 100 110 90 110 90 110 ms
C
L
= 50 pF,
C
ext
= 0.1 µF,
R
ext
= 10 kΩ
0.9 1 1.1 0.9 1.1 0.9 1.1 ms
∆t
w
‡
±1 %
* On products compliant to MIL-PRF-38535, this parameter is not production tested.
†
t
w
= Pulse duration at Q and Q
outputs
‡
∆t
w
= Output pulse-duration variation (Q and Q
) between circuits in same package