74AHC_AHCT123A All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 4 — 8 November 2011 10 of 22
NXP Semiconductors
74AHC123A; 74AHCT123A
Dual retriggerable monostable multivibrator with reset
t
W
pulse width inputs; nA = LOW;
see Figure 7
V
CC
= 3.0 V to 3.6 V 5.0 - - 5.0 - 5.0 - ns
V
CC
= 4.5 V to 5.5 V 5.0 - - 5.0 - 5.0 - ns
inputs; nB = HIGH;
see Figure 7
V
CC
= 3.0 V to 3.6 V 5.0 - - 5.0 - 5.0 - ns
V
CC
= 4.5 V to 5.5 V 5.0 - - 5.0 - 5.0 - ns
inputs; nR
D = LOW;
see Figure 7
V
CC
= 3.0 V to 3.6 V 5.0 - - 5.0 - 5.0 - ns
V
CC
= 4.5 V to 5.5 V 5.0 - - 5.0 - 5.0 - ns
outputs; nQ
= LOW and
nQ = HIGH; C
L
=50pF;
see Figure 7, Figure 8,
Figure 9
and Figure 10
[3]
C
EXT
= 28 pF; R
EXT
=2k
V
CC
= 3.0 V to 3.6 V - 115 240 - 300 - 300 ns
V
CC
= 4.5 V to 5.5 V - 100 200 - 240 - 240 ns
C
EXT
= 0.01 F;
R
EXT
=10k
V
CC
= 3.0 V to 3.6 V 90 100 110 90 110 85 115 s
V
CC
= 4.5 V to 5.5 V 90 100 110 90 110 85 115 s
C
EXT
= 0.1 F;
R
EXT
=10k;
V
CC
= 3.0 V to 3.6 V 0.9 1 1.1 0.9 1.1 0.85 1.15 ms
V
CC
= 4.5 V to 5.5 V 0.9 1 1.1 0.9 1.1 0.85 1.15 ms
t
rtrig
retrigger
time
nA to nB; C
EXT
= 100 pF;
R
EXT
=1k; C
L
=50pF;
see Figure 8
and Figure 10
V
CC
= 3.0 V to 3.6 V - 60 - - - - - ns
V
CC
= 4.5 V to 5.5 V - 39 - - - - - ns
nA
to nB; C
EXT
= 0.01 F;
R
EXT
=1k; C
L
=50pF;
see Figure 8 and Figure 10
V
CC
= 3.0 V to 3.6 V - 1.5 - - - - - s
V
CC
= 4.5 V to 5.5 V - 1.2 - - - - - s
C
PD
power
dissipation
capacitance
C
L
=50pF; f
i
= 1 MHz;
V
I
=GNDtoV
CC
[4]
-57- - - - -pF
Table 7. Dynamic characteristics …continued
GND = 0 V; For test circuit see Figure 12.
Symbol Parameter Conditions 25 C 40 C to +85 C 40 C to +125 C Unit
Min Typ
[1]
Max Min Max Min Max