Datasheet

74HC_HCT123 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet Rev. 9 — 19 January 2015 9 of 25
NXP Semiconductors
74HC123; 74HCT123
Dual retriggerable monostable multivibrator with reset
t
rtrig
retrigger time nA,nB; C
EXT
= 0 pF;
R
EXT
= 5 k; V
CC
= 5.0 V;
see Figure 10
[3][4]
-110- - - - - ns
R
EXT
external timing
resistor
see Figure 7
V
CC
= 2.0 V 10 - 1000 - - - - k
V
CC
= 5.0 V 2 - 1000 - - - - k
C
EXT
external timing
capacitor
V
CC
= 5.0 V; see Figure 7
[4]
--- - - - -pF
C
PD
power
dissipation
capacitance
per monostable;
V
I
= GND to V
CC
[5]
-54- - - - -pF
74HCT123
t
PHL
HIGH to LOW
propagation
delay
nRD, nA, nB to nQ or nQ;
C
EXT
= 0 pF; R
EXT
=
5k; see Figure 9
V
CC
= 4.5 V - 30 51 - 64 - 77 ns
V
CC
= 5 V; C
L
=15pF - 26 - - - - - ns
nRD
(reset) to nQ or nQ;
C
EXT
=0pF;
R
EXT
=5k;
see Figure 9
V
CC
= 4.5 V - 27 46 - 58 - 69 ns
V
CC
= 5 V; C
L
=15pF - 23 - - - - - ns
t
PLH
LOW to HIGH
propagation
delay
nRD, nA, nB to nQ or nQ;
C
EXT
= 0 pF;
R
EXT
=5k;
see Figure 9
V
CC
= 4.5 V - 28 51 - 64 - 77 ns
V
CC
= 5 V; C
L
=15pF - 26 - - - - - ns
nRD
(reset) to nQ or nQ;
C
EXT
=0pF; R
EXT
=
5k; see Figure 9
V
CC
= 4.5 V - 23 46 - 58 - 69 ns
V
CC
= 5 V; C
L
=15pF - 23 - - - - - ns
t
t
transition time V
CC
= 4.5 V; see Figure 9
[1]
- 7 15 - 19 - 22 ns
Table 7. Dynamic characteristics
…continued
Voltages are referenced to GND (ground = 0 V); C
L
= 50 pF unless otherwise specified; for test circuit see Figure 12.
Symbol Parameter Conditions 25 C 40 C to +85 C 40 C to +125 C Unit
Min Typ Max Min Max Min Max