Datasheet

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   
SCLS352H − JULY 1997 − REVISED OCTOBER 2005
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
switching characteristics over recommended operating free-air temperature range,
V
CC
= 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
TO
TEST
T
A
= 25°C SN54AHC123A SN74AHC123A
UNIT
PARAMETER
FROM
(NPUT)
TO
(OUTPUT)
TEST
CONDITIONS
MIN TYP MAX MIN MAX MIN MAX
UNIT
t
PLH
A or B
Q or Q
C
L
= 15 pF
6.5* 12* 1* 14* 1 14
ns
t
PHL
A or B Q or Q
C
L
= 15 pF
7.1* 12* 1* 14* 1 14
ns
t
PLH
CLR
Q or Q
C
L
= 15 pF
5.3* 9.4* 1* 11* 1 11
ns
t
PHL
CLR
Q or Q
C
L
= 15 pF
6.5* 9.4* 1* 11* 1 11
ns
t
PLH
CLR trigger
Q or Q
C
L
= 15 pF
6.9* 12.9* 1* 15* 1 15
ns
t
PHL
CLR trigger Q or Q
C
L
= 15 pF
7.4* 12.9* 1* 15* 1 15
ns
t
PLH
A or B
Q or Q
C
L
= 50 pF
7.3 14 1 16 1 16
ns
t
PHL
A or B Q or Q
C
L
= 50 pF
8.3 14 1 16 1 16
ns
t
PLH
CLR
Q or Q
C
L
= 50 pF
6.3 11.4 1 13 1 13
ns
t
PHL
CLR
Q or Q
C
L
= 50 pF
7.4 11.4 1 13 1 13
ns
t
PLH
CLR trigger
Q or Q
C
L
= 50 pF
7.6 14.9 1 17 1 17
ns
t
PHL
CLR trigger Q or Q
C
L
= 50 pF
8.7 14.9 1 17 1 17
ns
C
L
= 50 pF,
C
ext
= 28 pF,
R
ext
= 2 kΩ
167 200 240 240 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
operating characteristics, V
CC
= 5 V, T
A
= 25°C
PARAMETER TEST CONDITIONS TYP UNIT
C
pd
Power dissipation capacitance No load 29 pF