74LV123D,118 NXP Semiconductors, 74LV123D,118 Datasheet - Page 14

• Manufacturer Part Number: 74LV123D,118
• Description: IC DUAL RETRIG MULTIVIB 16SOIC
• Manufacturer: NXP Semiconductors
• Series: 74LVr

Specifications of 74LV123D,118

• Logic Type: Monostable
• Independent Circuits: 2
• Schmitt Trigger Input: Yes
• Propagation Delay: 14ns
• Current - Output High, Low: 12mA, 12mA
• Voltage - Supply: 1 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 74LV123D-T; 74LV123D-T; 935210250118

NXP Semiconductors
74LV123_5
Product data sheet
Fig 10. Typical ‘K’ factor as a function of V
factor
'K'
0.8
0.6
0.4
0.2
0
C
0
EXT
= 10 nF; R
12.1.2 Retrigger timing
2
EXT
The time to retrigger the monostable multivibrator depends on the values of R
C
going edges of the trigger pulses meets the minimum retrigger time. If C
next formula for the set-up time of a retrigger pulse is valid:
at V
at V
where:
Fig 12. Output pulse control using retrigger pulse nA
EXT
= 10 k to 100 k
t
C
R
rtrig
EXT
EXT
CC
CC
. The output pulse width will only be extended when the time between the active
= retrigger time in ns
= 5.0 V: t
= 3.0 V: t
= external capacitor in pF
= external resistor in k
nRD = HIGH
4
V
CC
rtrig
rtrig
001aae529
(V)
CC
= 30 + 0.19R
= 41 + 0.15R
Rev. 05 — 8 November 2007
nQ output
nB input
nA input
6
Dual retriggerable monostable multivibrator with reset
t
EXT
EXT
W
Fig 11. Typical output pulse width as a function of the
t
W
(ns)
C
C
t
W
10
10
10
10
10
EXT
EXT
0
6
5
4
3
2
external capacitance values
V
1
0.9
0.9
CC
= 3.3 V and T
R
+ 13
EXT
t
1
rtrig
t
= 100 k
W
10
R
50 k
10 k
2 k
R
EXT
EXT
amb
t
(typ.)
W
1.05
10
= 25 C
001aae526
2
(typ.)
10
© NXP B.V. 2007. All rights reserved.
3
74LV123
C
EXT
001aae530
ext
(pF)
> 10 pF, the
EXT
10
4
and
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