74HCT123DB NXP Semiconductors, 74HCT123DB Datasheet - Page 15

• Manufacturer Part Number: 74HCT123DB
• Manufacturer: NXP Semiconductors

Specifications of 74HCT123DB

• Logic Family: HCT
• High Level Output Current: -4mA
• Low Level Output Current: 4mA
• Quiescent Current: 8nA
• Number Of Elements: 2
• Operating Temperature Classification: Automotive
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (typ): 5V
• Operating Temperature (min): -40C
• Operating Temperature (max): 125C
• Technology: CMOS
• Abs. Propagation Delay Time: 77ns
• Operating Supply Voltage (min): 4.5V
• Lead Free Status / RoHS Status: Compliant

NXP Semiconductors
12. Application information
74HC_HCT123_5
Product data sheet
12.1 Timing component connections
12.2 Power-up considerations
The basic output pulse width is essentially determined by the values of the external timing
components R
When the monostable is powered-up it may produce an output pulse, with a pulse width
defined by the values of R
circuit shown in
Fig 13. Timing component connections
Fig 14. Power-up output pulse elimination circuit
(1) For minimum noise generation it is recommended to ground pins 6 (2CEXT) and 14 (1CEXT)
externally to pin 8 (GND).
EXT
Figure
and C
14.
Rev. 05 — 13 July 2009
nA
nB
EXT
nA
nB
EXT
.
and C
1 (9)
2 (10)
Dual retriggerable monostable multivibrator with reset
1 (9)
2 (10)
123
EXT
123
GND
8
8
GND
. This output pulse can be eliminated using the
RESET
(1)
nCEXT
14 (6)
74HC123; 74HCT123
nCEXT
14 (6)
C EXT
C EXT
nRD
3 (11)
nRD
3 (11)
nREXT/CEXT
15 (7)
15 (7)
001aaa854
nREXT/CEXT
R EXT
R EXT
13 (5)
4 (12)
13 (5)
4 (12)
001aaa613
V
CC
V
V
CC
CC
nQ
nQ
nQ
nQ
© NXP B.V. 2009. All rights reserved.
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