74LV123
Dual retriggerable monostable multivibrator with reset
Rev. 10 — 14 July 202
Product data sheet
1. General description
The 74LV123 is a dual retriggerable monostable multivibrator with reset. The basic output pulse
width is programmed by selection of external components (REXT and CEXT). Once triggered this
basic pulse width may be extended by retriggering either of the edge triggered inputs (nA or (nB).
By repeating this process, the output pulse period (nQ = HIGH, nQ = LOW) can be made as long
as desired. Alternatively, an output delay can be terminated at any time by a LOW-going edge on
input nRD. Control inputs include clamp diodes. This enables the use of current limiting resistors
to interface inputs to voltages in excess VCC. Schmitt-trigger action at nA and nB inputs makes the
circuit tolerant of slower input rise and fall times.
2. Features and benefits
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Wide supply voltage range from 1.0 V to 5.5 V
CMOS low power dissipation
Latch-up performance exceeds 100 mA per JESD 78 Class II Level B
Optimized for low-voltage applications: 1.0 V to 3.6 V
Accepts TTL input levels between VCC = 2.7 V and VCC = 3.6 V
Typical output ground bounce: < 0.8 V at VCC = 3.3 V and Tamb = 25 °C
Typical HIGH-level output voltage (VOH) undershoot: > 2 V at VCC = 3.3 V and Tamb = 25 °C
DC triggered from active HIGH or active LOW inputs
Retriggerable for very long pulses up to 100 % duty factor
Direct reset terminates output pulses
Schmitt-trigger action on all inputs except for the reset input
Complies with JEDEC standards:
• JESD8-7 (1.65 V to 1.95 V)
• JESD8-5 (2.3 V to 2.7 V)
• JESD8C (2.7 V to 3.6 V)
• JESD36 (4.5 V to 5.5 V)
ESD protection:
• HBM JESD22-A114F exceeds 2000 V
• MM JESD22-A115-A exceeds 200 V
Multiple package options
Specified from -40 °C to +85 °C and from -40 °C to +125 °C
3. Ordering information
Table 1. Ordering information
Type number Package
Temperature range
Name
Description
Version
74LV123D
-40 °C to +125 °C
SO16
plastic small outline package; 16 leads;
body width 3.9 mm
SOT109-1
74LV123PW
-40 °C to +125 °C
TSSOP16
plastic thin shrink small outline package; 16 leads;
body width 4.4 mm
SOT403-1
74LV123
Nexperia
Dual retriggerable monostable multivibrator with reset
Type number
74LV123BQ
Package
Temperature range
Name
Description
Version
-40 °C to +125 °C
DHVQFN16 plastic dual in-line compatible thermal enhanced
very thin quad flat package; no leads; 16 terminals;
body 2.5 × 3.5 × 0.85 mm
SOT763-1
4. Functional diagram
14
15
1
14 1CEXT
6 2CEXT
2A 9
13 1Q
5 2Q
6
T
1B 2
2B 10
7
4 1Q
Q
13
&
4
3
S
Q
RCX
2
15 1REXT/CEXT
7 2REXT/CEXT
1A 1
CX
9
12 2Q
R
CX
RCX
5
&
10
RD
1RD 3
12
2RD 11
11
R
001aae522
001aae521
Fig. 1.
Logic symbol
Fig. 2.
IEC logic symbol
14
15
S
1A
1B
1RD
13
Q
1
4
Q
2
2RD
1Q
1Q
RD
3
6
S
2B
1REXT/CEXT
T
7
2A
1CEXT
5
Q
9
2CEXT
2REXT/CEXT
2Q
T
10
12
Q
2Q
RD
11
001aaa610
Fig. 3.
Functional diagram
74LV123
Product data sheet
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Rev. 10 — 14 July 202
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Nexperia B.V. 2023. All rights reserved
2 / 19
74LV123
Nexperia
Dual retriggerable monostable multivibrator with reset
nREXT/CEXT
VCC
Q
RD
R
Q
R
CL
VCC
CL
VCC
R
CL
A
B
Fig. 4.
CL
CL
R
001aae524
Logic diagram
74LV123
Product data sheet
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Rev. 10 — 14 July 202
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Nexperia B.V. 2023. All rights reserved
3 / 19
74LV123
Nexperia
Dual retriggerable monostable multivibrator with reset
5. Pinning information
5.1. Pinning
1
1A
terminal 1
index area
1B
2
15 1REXT/CEXT
1RD
3
14 1CEXT
1Q
4
13 1Q
2Q
5
12 2Q
2CEXT
6
2REXT/CEXT
7
2
15 1REXT/CEXT
1RD
3
14 1CEXT
1Q
4
13 1Q
2Q
5
12 2Q
2CEXT
6
11 2RD
2REXT/CEXT
7
10 2B
GND
8
9
11 2RD
10 2B
001aag650
Transparent top view
(1) This is not a supply pin. There is no electrical or
mechanical requirement to solder the pad. In case
soldered, the solder land should remain floating or
connected to VCC.
2A
001aag678
Fig. 5.
VCC(1)
9
1B
8
16 VCC
2A
1
GND
74LV123
1A
16 VCC
74LV123
Pin configuration SOT109-1 (SO16) and
SOT403-1 (TSSOP16)
Fig. 6.
Pin configuration SOT763-1 (DHVQFN16)
5.2. Pin description
Table 2. Pin description
Symbol
Pin
Description
1A
1
negative-edge triggered input 1
1B
2
positive-edge triggered input 1
1RD
3
direct reset LOW and positive-edge triggered input 1
1Q
4
active LOW output 1
2Q
5
active HIGH output 2
2CEXT
6
external capacitor connection 2
2REXT/CEXT
7
external resistor and capacitor connection 2
GND
8
ground (0 V)
2A
9
negative-edge triggered input 2
2B
10
positive-edge triggered input 2
2RD
11
direct reset LOW and positive-edge triggered input 2
2Q
12
active LOW output 2
1Q
13
active HIGH output 1
1CEXT
14
external capacitor connection 1
1REXT/CEXT
15
external resistor and capacitor connection 1
VCC
16
supply voltage
74LV123
Product data sheet
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Rev. 10 — 14 July 202
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Nexperia B.V. 2023. All rights reserved
4 / 19
74LV123
Nexperia
Dual retriggerable monostable multivibrator with reset
6. Functional description
Table 3. Function table
H = HIGH voltage level; L = LOW voltage level; X = don’t care; ↑ = LOW-to-HIGH transition; ↓ = HIGH-to-LOW transition;
= one HIGH level output pulse;
= one LOW level output pulse.
Input
[1]
Output
nRD
nA
nB
nQ
nQ
L
X
X
L
H
X
H
X
L [1]
H [1]
X
X
L
L [1]
H [1]
H
L
↑
H
↓
H
↑
L
H
If the monostable multivibrator was triggered before this condition was established, the pulse will continue as programmed.
7. Limiting values
Table 4. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol
Parameter
Min
Max
VCC
supply voltage
-0.5
+7
V
IIK
input clamping current
VI < -0.5 V or VI > VCC + 0.5 V
[1]
-
±20
mA
IOK
output clamping current
VO < -0.5 V or VO > VCC + 0.5 V
[1]
-
±50
mA
IO
output current
except for pins nREXT/CEXT;
VO = -0.5 V to (VCC + 0.5 V)
[1]
-
±25
mA
ICC
supply current
-
+50
mA
IGND
ground current
-50
-
mA
Tstg
storage temperature
-65
+150
°C
Ptot
total power dissipation
-
500
mW
[1]
[2]
Conditions
Tamb = -40 °C to +125 °C
[2]
Unit
The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
For SOT109-1 (SO16) package: Ptot derates linearly with 12.4 mW/K above 110 °C.
For SOT403-1 (TSSOP16) package: Ptot derates linearly with 8.5 mW/K above 91 °C.
For SOT763-1 (DHVQFN16) package: Ptot derates linearly with 11.2 mW/K above 106 °C.
8. Recommended operating conditions
Table 5. Recommended operating conditions
Symbol Parameter
Conditions
Min
Typ
Max
Unit
1.0
3.3
5.5
V
input voltage
0
-
VCC
V
VO
output voltage
0
-
VCC
V
Tamb
ambient temperature
-40
+25
+125
°C
VCC
supply voltage
VI
74LV123
Product data sheet
[1]
in free air
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Rev. 10 — 14 July 202
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Nexperia B.V. 2023. All rights reserved
5 / 19
74LV123
Nexperia
Dual retriggerable monostable multivibrator with reset
Symbol
Parameter
Conditions
Δt/ΔV
input transition rise and fall rate
VCC = 1.0 V to 2.0 V
[1]
[2]
Min
Typ
Max
Unit
[2]
-
-
500
ns/V
VCC = 2.0 V to 2.7 V
[2]
-
-
200
ns/V
VCC = 2.7 V to 3.6 V
[2]
-
-
100
ns/V
VCC = 3.6 V to 5.5 V
[2]
-
-
50
ns/V
The 74LV123 is guaranteed to function down to VCC = 1.0 V (input levels GND or VCC); The "Static characteristics" Section 9 are
guaranteed from VCC = 1.2 V to VCC = 5.5 V.
Except for Schmitt-trigger inputs nA and nB.
9. Static characteristics
Table 6. Static characteristics
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter
Conditions
Min
Typ[1]
Max
Unit
VCC = 1.2 V
0.9
-
-
V
VCC = 2.0 V
1.4
-
-
V
VCC = 2.7 V to 3.6 V
2.0
-
-
V
VCC = 4.5 V to 5.5 V
0.7VCC
-
-
V
VCC = 1.2 V
-
-
0.3
V
VCC = 2.0 V
-
-
0.6
V
VCC = 2.7 V to 3.6 V
-
-
0.8
V
VCC = 4.5 V to 5.5 V
-
-
lO = -100 μA; VCC = 1.2 V
-
1.2
-
V
lO = -100 μA; VCC = 2.0 V
1.8
2.0
-
V
lO = -100 μA; VCC = 2.7 V
2.5
2.7
-
V
lO = -100 μA; VCC = 3.0 V
2.8
3.0
-
V
lO = -100 μA; VCC = 4.5 V
4.3
4.5
-
V
lO = -6 mA; VCC = 3.0 V
2.40
2.82
-
V
lO = -12 mA; VCC = 4.5 V
3.60
4.20
-
V
IO = 100 μA; VCC = 1.2 V
-
0
-
V
IO = 100 μA; VCC = 2.0 V
-
0
0.2
V
IO = 100 μA; VCC = 2.7 V
-
0
0.2
V
IO = 100 μA; VCC = 3.0 V
-
0
0.2
V
IO = 100 μA; VCC = 4.5 V
-
0
0.2
V
IO = 6 mA; VCC = 3.0 V
-
0.25
0.40
V
IO = 12 mA; VCC = 4.5 V
-
0.35
0.55
V
Tamb = -40 °C to +85 °C
VIH
VIL
VOH
VOL
HIGH-level input voltage
LOW-level input voltage
0.3VCC V
HIGH-level output voltage VI = VIH or VIL
LOW-level output voltage
VI = VIH or VIL
II
input leakage current
VI = VCC or GND; VCC = 5.5 V
-
-
1.0
μA
ICC
supply current
VI = VCC or GND; IO = 0 A; VCC = 5.5 V
-
-
20.0
μA
ΔICC
additional supply current
VI = VCC - 0.6 V; VCC = 2.7 V to 3.6 V
-
-
500
μA
CI
input capacitance
-
3.5
-
pF
74LV123
Product data sheet
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Nexperia B.V. 2023. All rights reserved
6 / 19
74LV123
Nexperia
Dual retriggerable monostable multivibrator with reset
Symbol Parameter
Conditions
Min
Typ[1]
Max
Unit
VCC = 1.2 V
0.9
-
-
V
VCC = 2.0 V
1.4
-
-
V
VCC = 2.7 V to 3.6 V
2.0
-
-
V
VCC = 4.5 V to 5.5 V
0.7VCC
-
-
V
VCC = 1.2 V
-
-
0.3
V
VCC = 2.0 V
-
-
0.6
V
VCC = 2.7 V to 3.6 V
-
-
0.8
V
VCC = 4.5 V to 5.5 V
-
-
lO = -100 μA; VCC = 1.2 V
-
-
-
V
lO = -100 μA; VCC = 2.0 V
1.8
-
-
V
lO = -100 μA; VCC = 2.7 V
2.5
-
-
V
lO = -100 μA; VCC = 3.0 V
2.8
-
-
V
lO = -100 μA; VCC = 4.5 V
4.3
-
-
V
lO = -6 mA; VCC = 3.0 V
2.2
-
-
V
lO = -12 mA; VCC = 4.5 V
3.5
-
-
V
IO = 100 μA; VCC = 1.2 V
-
-
-
V
IO = 100 μA; VCC = 2.0 V
-
-
0.2
V
IO = 100 μA; VCC = 2.7 V
-
-
0.2
V
IO = 100 μA; VCC = 3.0 V
-
-
0.2
V
IO = 100 μA; VCC = 4.5 V
-
-
0.2
V
IO = 6 mA; VCC = 3.0 V
-
-
0.5
V
IO = 12 mA; VCC = 4.5 V
-
-
0.65
V
Tamb = -40 °C to +125 °C
VIH
HIGH-level input voltage
VIL
LOW-level input voltage
VOH
VOL
0.3VCC V
HIGH-level output voltage VI = VIH or VIL
LOW-level output voltage
VI = VIH or VIL
II
input leakage current
VI = VCC or GND; VCC = 5.5 V
-
-
1.0
μA
ICC
supply current
VI = VCC or GND; IO = 0 A; VCC = 5.5 V
-
-
160
μA
ΔICC
additional supply current
VI = VCC - 0.6 V; VCC = 2.7 V to 3.6 V
-
-
850
μA
[1]
All typical values are measured at Tamb = 25 °C.
74LV123
Product data sheet
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Rev. 10 — 14 July 202
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Nexperia B.V. 2023. All rights reserved
7 / 19
74LV123
Nexperia
Dual retriggerable monostable multivibrator with reset
10. Dynamic characteristics
Table 7. Dynamic characteristics
GND = 0 V; tr = tf ≤ 2.5 ns; for test circuit see Fig. 8.
Symbol Parameter
Conditions
-40 °C to +85 °C
-40 °C to +125 °C Unit
Min
Typ[1]
Max
Min
Max
VCC = 1.2 V
-
120
-
-
-
ns
VCC = 2.0 V
-
40
76
-
92
ns
VCC = 2.7 V
-
30
56
-
68
ns
VCC = 3.0 V to 3.6 V
-
25
48
-
57
ns
-
18
40
-
46
ns
VCC = 1.2 V
-
100
-
-
-
ns
VCC = 2.0 V
-
30
57
-
68
ns
VCC = 2.7 V
-
23
43
-
51
ns
VCC = 3.0 V to 3.6 V
-
20
38
-
45
ns
VCC = 4.5 V to 5.5 V
-
14
31
-
36
ns
VCC = 2.0 V
30
5
-
40
-
ns
VCC = 2.7 V
25
3.5
-
30
-
ns
VCC = 3.0 V to 3.6 V
20
3.0
-
25
-
ns
VCC = 4.5 V to 5.5 V
15
2.5
-
20
-
ns
VCC = 2.0 V
30
13
-
40
-
ns
VCC = 2.7 V
25
8
-
30
-
ns
VCC = 3.0 V to 3.6 V
20
7
-
25
-
ns
VCC = 4.5 V to 5.5 V
15
5
-
20
-
ns
VCC = 2.0 V
35
6
-
45
-
ns
VCC = 2.7 V
30
5
-
40
-
ns
VCC = 3.0 V to 3.6 V
25
4
-
30
-
ns
VCC = 4.5 V to 5.5 V
20
3
-
25
-
ns
VCC = 2.0 V
-
70
-
-
-
ns
VCC = 2.7 V
-
55
-
-
-
ns
VCC = 3.0 V to 3.6 V
-
45
-
-
-
ns
VCC = 4.5 V to 5.5 V
-
40
-
-
-
ns
Propagation delay; see Fig. 7
tpd
propagation
delay
nRD, nA and nB to nQ
[2]
VCC = 4.5 V to 5.5 V
nRD to nQ (reset)
[2]
Inputs nA, nB and nRD; see Fig. 7
tW
pulse width
nA = LOW
nB = HIGH
nRD = LOW; see Fig. 13
trtrig
retrigger time
74LV123
Product data sheet
nB to nA; see Fig. 12
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Rev. 10 — 14 July 202
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Nexperia B.V. 2023. All rights reserved
8 / 19
74LV123
Nexperia
Dual retriggerable monostable multivibrator with reset
Symbol Parameter
Conditions
-40 °C to +85 °C
-40 °C to +125 °C Unit
Min
Typ[1]
Max
Min
Max
VCC = 2.0 V
-
470
-
-
-
µs
VCC = 2.7 V
-
460
-
-
-
µs
VCC = 3.0 V to 3.6 V
-
450
-
-
-
µs
VCC = 4.5 V to 5.5 V
-
430
-
-
-
µs
VCC = 2.0 V
-
100
-
-
-
ns
VCC = 2.7 V
-
90
-
-
-
ns
VCC = 3.0 V to 3.6 V
-
80
-
-
-
ns
VCC = 4.5 V to 5.5 V
-
70
-
-
-
ns
VCC = 1.2 V
10
-
1000
-
-
kΩ
VCC = 2.0 V
5
-
1000
-
-
kΩ
VCC = 2.7 V
3
-
1000
-
-
kΩ
VCC = 3.0 V to 3.6 V
2
-
1000
-
-
kΩ
VCC = 4.5 V to 5.5 V
2
-
1000
-
-
kΩ
VCC = 1.2 V
-
-
-
-
-
pF
VCC = 2.0 V
-
-
-
-
-
pF
VCC = 2.7 V
-
-
-
-
-
pF
VCC = 3.0 V to 3.6 V
-
-
-
-
-
pF
VCC = 4.5 V to 5.5 V
-
-
-
-
-
pF
-
60
-
-
-
pF
Outputs; nQ = LOW and nQ = HIGH, see Fig. 7
tW
pulse width
CEXT = 100 nF; REXT = 10 kΩ
CEXT = 0 pF; REXT = 5 kΩ
External components
REXT
CEXT
external
resistance
external
capacitance
see Fig. 11
[3]
see Fig. 11
[3] [4]
Dynamic power dissipation
CPD
[1]
[2]
[3]
[4]
[5]
power dissipation VCC = 3.3 V; VI = GND to VCC
capacitance
[5]
All typical values are measured at Tamb = 25 °C and nominal supply values (VCC = 3.3 V and 5.0 V).
tpd is the same as tPLH and tPHL; CEXT = 0 pF; REXT = 5 kΩ.
For other REXT and CEXT combinations see Fig. 11 and Section 11.1.1.
CEXT has no limits.
CPD is used to determine the dynamic power dissipation (PD in μW).
2
2
PD = CPD x VCC x fi x N + Σ(CL x VCC × fo) where:
fi = input frequency in MHz;
fo = output frequency in MHz;
CL = output load capacitance in pF;
VCC = supply voltage in V;
N = number of inputs switching;
2
Σ(CL x VCC x fo) = sum of the outputs.
74LV123
Product data sheet
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Rev. 10 — 14 July 202
©
Nexperia B.V. 2023. All rights reserved
9 / 19
74LV123
Nexperia
Dual retriggerable monostable multivibrator with reset
10.1. Waveforms and test circuit
nB input
(nA LOW)
VM
tW
VM
nA input
(nB HIGH)
tW
RESET
VM
nRD input
tPLH
nQ output
tPLH
tW
VM
tPHL
tW
nQ output
tPLH
tW
VM
tPHL
tPHL
tPLH
tPHL
001aae528
Measurement points are given in Table 8.
Fig. 7.
Propagation delays from inputs (nA, nB, nRD) to outputs (nQ, nQ)
Table 8. Measurement points
VCC
VM
≥ 2.7 V
1.5 V
< 2.7 V
0.5 × VCC
VCC
PULSE
GENERATOR
VI
VO
DUT
RT
CL
50 pF
RL
1 kΩ
001aae533
Test data is given in Table 9.
Definitions for test circuit:
RL = Load resistance.
CL = Load capacitance including jig and probe capacitance.
RT = Termination resistance should be equal to Zo of the pulse generator.
Fig. 8.
Test circuit for measuring switching times
74LV123
Product data sheet
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Rev. 10 — 14 July 202
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Nexperia B.V. 2023. All rights reserved
10 / 19
74LV123
Nexperia
Dual retriggerable monostable multivibrator with reset
Table 9. Test data
Supply voltage
Input
VCC
VI
tr, tf
CL
RL
< 2.7 V
VCC
≤ 2.5 ns
50 pF
1 kΩ
tPHL, tPLH
2.7 V to 3.6 V
2.7 V
≤ 2.5 ns
50 pF
1 kΩ
tPHL, tPLH
≥ 4.5 V
VCC
≤ 2.5 ns
50 pF
1 kΩ
tPHL, tPLH
Load
Test
11. Application information
11.1. Timing components
11.1.1. Basic timing
The basic output pulse width is essentially determined by the values of the external timing
components REXT and CEXT.
(1)
CEXT
GND
nCEXT
8
14 (6)
REXT
nREXT/CEXT
15 (7)
13 (5)
74LV123
nA
nB
VCC
1 (9)
2 (10)
4 (12)
nQ
nQ
3 (11)
nRD
001aae525
(1) For minimum noise generation it is recommended to ground pin 6 (2CEXT) and
pin 14 (1CEXT) externally to pin 8 (GND).
Fig. 9.
Timing components connections
If CEXT > 10 nF, the following formula is valid: tW = K x REXT x CEXT (typical) where:
•
•
•
•
tW = output pulse width in ns
REXT = external resistor in kΩ
CEXT = external capacitor in pF
K = constant: this is 0.45 for VCC = 5.0 V and 0.48 for VCC = 2.0 V (see Fig. 10)
The inherent test jig and pin capacitance at pin 15 and pin 7 (nREXT/CEXT) is approximately 7 pF.
74LV123
Product data sheet
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Rev. 10 — 14 July 202
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74LV123
Nexperia
Dual retriggerable monostable multivibrator with reset
0.8
001aae530
106
001aae529
tW
(ns)
'K'
factor
105
REXT = 100 kΩ
50 kΩ
10 kΩ
2 kΩ
0.6
104
0.4
103
102
0.2
0
0
0
2
4
1
102
10
103
6
VCC (V)
Cext (pF)
104
VCC = 3.3 V and Tamb = 25 °C
CEXT = 10 nF; REXT = 10 kΩ to 100 kΩ
Fig. 11. Typical output pulse width as a function of the
external capacitance values
Fig. 10. Typical ‘K’ factor as a function of VCC
11.1.2. Retrigger timing
The time to retrigger the monostable multivibrator depends on the values of REXT and CEXT. The
output pulse width will only be extended when the time between the active going edges of the
trigger pulses meets the minimum retrigger time. If CEXT > 10 pF, the next formula for the set-up
time of a retrigger pulse is valid:
at VCC = 5.0 V: trtrig = 30 + 0.19REXT x CEXT
0.9
+ 13 x REXT
1.05
at VCC = 3.0 V: trtrig = 41 + 0.15REXT x CEXT
0.9
x 1 x REXT (typical)
(typical)
where:
•
•
•
trtrig = retrigger time in ns
CEXT = external capacitor in pF
REXT = external resistor in kΩ
nB input
tW
nA input
trtrig
tW
nQ output
tW
tW
001aae526
nRD = HIGH
Fig. 12. Output pulse control using retrigger pulse nA
74LV123
Product data sheet
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Rev. 10 — 14 July 202
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12 / 19
74LV123
Nexperia
Dual retriggerable monostable multivibrator with reset
11.1.3. Reset timing
nB input
nRD input
nQ output
tW
tW
001aae527
nA = LOW
Fig. 13. Output pulse control using reset input nRD
11.2. Power considerations
11.2.1. Power-up
When the monostable multivibrator is powered-up, it may produce an output pulse with a pulse
width defined by the values of REXT and CEXT. This output pulse can be eliminated using the RC
circuit on pin nRD shown in Fig. 14.
11.2.2. Power-down
A large capacitor (CEXT) may cause problems when powering-down the monostable due to the
energy stored in this capacitor. When a system containing this device is powered-down or a
rapid decrease of VCC to zero occurs, the monostable may sustain damage, due to the capacitor
discharging through the input protection diodes. To avoid this possibility, connect a damping diode
DEXT (preferably a germanium or Schottky type diode) able to withstand large current surges. See
Fig. 14.
DEXT
CEXT
REXT
GND
nCEXT
nREXT/CEXT
8
14 (6)
15 (7)
74LV123
nA
nB
VCC
13 (5)
1 (9)
2 (10)
4 (12)
nQ
nQ
3 (11)
nRD
RESET
VCC
001aae532
Fig. 14. Power-up and power-down circuit
74LV123
Product data sheet
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13 / 19
74LV123
Nexperia
Dual retriggerable monostable multivibrator with reset
12. Package outline
SO16: plastic small outline package; 16 leads; body width 3.9 mm
SOT109-1
D
E
A
X
c
y
HE
v M A
Z
16
9
Q
A2
A
(A 3)
A1
pin 1 index
θ
Lp
1
L
8
e
w M
bp
0
2.5
detail X
5 mm
scale
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
UNIT
A
max.
A1
A2
A3
bp
c
D (1)
E (1)
e
HE
L
Lp
Q
v
w
y
Z (1)
mm
1.75
0.25
0.10
1.45
1.25
0.25
0.49
0.36
0.25
0.19
10.0
9.8
4.0
3.8
1.27
6.2
5.8
1.05
1.0
0.4
0.7
0.6
0.25
0.25
0.1
0.7
0.3
inches
0.069
0.010 0.057
0.004 0.049
0.01
0.019 0.0100 0.39
0.014 0.0075 0.38
0.16
0.15
0.05
0.039
0.016
0.028
0.020
0.01
0.01
0.004
0.028
0.012
0.244
0.041
0.228
θ
o
8
o
0
Note
1. Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included.
REFERENCES
OUTLINE
VERSION
IEC
JEDEC
SOT109-1
076E07
MS-012
JEITA
EUROPEAN
PROJECTION
ISSUE DATE
99-12-27
03-02-19
Fig. 15. Package outline SOT109-1 (SO16)
74LV123
Product data sheet
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Rev. 10 — 14 July 202
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Nexperia B.V. 2023. All rights reserved
14 / 19
74LV123
Nexperia
Dual retriggerable monostable multivibrator with reset
TSSOP16: plastic thin shrink small outline package; 16 leads; body width 4.4 mm
D
SOT403-1
E
A
X
c
y
HE
v M A
Z
9
16
Q
A2
pin 1 index
(A 3 )
A1
A
θ
Lp
1
L
8
detail X
w M
bp
e
0
2.5
5 mm
scale
DIMENSIONS (mm are the original dimensions)
UNIT
A
max.
A1
A2
A3
bp
c
D (1)
E (2)
e
HE
L
Lp
Q
v
w
y
Z (1)
θ
mm
1.1
0.15
0.05
0.95
0.80
0.25
0.30
0.19
0.2
0.1
5.1
4.9
4.5
4.3
0.65
6.6
6.2
1
0.75
0.50
0.4
0.3
0.2
0.13
0.1
0.40
0.06
8o
0o
Notes
1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.
2. Plastic interlead protrusions of 0.25 mm maximum per side are not included.
OUTLINE
VERSION
SOT403-1
REFERENCES
IEC
JEDEC
JEITA
EUROPEAN
PROJECTION
ISSUE DATE
99-12-27
03-02-18
MO-153
Fig. 16. Package outline SOT403-1 (TSSOP16)
74LV123
Product data sheet
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Rev. 10 — 14 July 202
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15 / 19
74LV123
Nexperia
Dual retriggerable monostable multivibrator with reset
DHVQFN16: plastic dual in-line compatible thermal enhanced very thin quad flat package; no leads;
SOT763-1
16 terminals; body 2.5 x 3.5 x 0.85 mm
B
D
A
A
E
A1
c
detail X
terminal 1
index area
terminal 1
index area
C
e1
e
b
2
7
y
y1 C
v M C A B
w M C
L
1
8
Eh
e
16
9
15
10
Dh
X
0
2.5
5 mm
scale
DIMENSIONS (mm are the original dimensions)
UNIT
A(1)
max.
A1
b
c
D (1)
Dh
E (1)
Eh
e
e1
L
v
w
y
y1
mm
1
0.05
0.00
0.30
0.18
0.2
3.6
3.4
2.15
1.85
2.6
2.4
1.15
0.85
0.5
2.5
0.5
0.3
0.1
0.05
0.05
0.1
Note
1. Plastic or metal protrusions of 0.075 mm maximum per side are not included.
REFERENCES
OUTLINE
VERSION
IEC
JEDEC
JEITA
SOT763-1
---
MO-241
---
EUROPEAN
PROJECTION
ISSUE DATE
02-10-17
03-01-27
Fig. 17. Package outline SOT763-1 (DHVQFN16)
74LV123
Product data sheet
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Rev. 10 — 14 July 202
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16 / 19
74LV123
Nexperia
Dual retriggerable monostable multivibrator with reset
13. Abbreviations
Table 10. Abbreviations
Acronym
Description
CMOS
Complementary Metal Oxide Semiconductor
DUT
Device Under Test
14. Revision history
Table 11. Revision history
Document ID
Release date
Data sheet status
Change notice Supersedes
74LV123 v.10
20230714
Product data sheet
-
74LV123 v.9
Modifications:
•
74LV123 v.9
20210913
-
74LV123 v.8
Modifications:
•
•
•
•
•
Section 10 updated (Errata).
Product data sheet
The format of this data sheet has been redesigned to comply with the identity
guidelines of Nexperia.
Legal texts have been adapted to the new company name where appropriate.
Type number 74LV123DB (SOT338-1/SSOP16) removed.
Section 1 and Section 2 updated.
Section 7: Derating values for Ptot total power dissipation have been updated.
74LV123 v.8
20160304
Modifications:
•
74LV123 v.7
20111212
Modifications:
•
74LV123 v.6
20110826
74LV123 v.5
Product data sheet
-
74LV123 v.7
Type numbers 74LV123N (SOT38-4) removed.
-
74LV123 v.6
Product data sheet
-
74LV123 v.5
20071108
Product data sheet
-
74LV123 v.4
74LV123 v.4
20070919
Product specification
-
74LV123 v.3
74LV123 v.3
20030313
Product specification
-
74LV123 v.2
74LV123 v.2
19980420
Product specification
-
74LV123 v.1
74LV123 v.1
19970204
Product specification
-
-
74LV123
Product data sheet
Product data sheet
Legal pages updated.
All information provided in this document is subject to legal disclaimers.
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17 / 19
74LV123
Nexperia
Dual retriggerable monostable multivibrator with reset
15. Legal information
injury, death or severe property or environmental damage. Nexperia and its
suppliers accept no liability for inclusion and/or use of Nexperia products in
such equipment or applications and therefore such inclusion and/or use is at
the customer’s own risk.
Data sheet status
Quick reference data — The Quick reference data is an extract of the
product data given in the Limiting values and Characteristics sections of this
document, and as such is not complete, exhaustive or legally binding.
Document status
[1][2]
Product
status [3]
Definition
Objective [short]
data sheet
Development
This document contains data from
the objective specification for
product development.
Preliminary [short]
data sheet
Qualification
This document contains data from
the preliminary specification.
Product [short]
data sheet
Production
This document contains the product
specification.
[1]
[2]
[3]
Please consult the most recently issued document before initiating or
completing a design.
The term 'short data sheet' is explained in section "Definitions".
The product status of device(s) described in this document may have
changed since this document was published and may differ in case of
multiple devices. The latest product status information is available on
the internet at https://www.nexperia.com.
Definitions
Draft — The document is a draft version only. The content is still under
internal review and subject to formal approval, which may result in
modifications or additions. Nexperia does not give any representations or
warranties as to the accuracy or completeness of information included herein
and shall have no liability for the consequences of use of such information.
Short data sheet — A short data sheet is an extract from a full data sheet
with the same product type number(s) and title. A short data sheet is
intended for quick reference only and should not be relied upon to contain
detailed and full information. For detailed and full information see the relevant
full data sheet, which is available on request via the local Nexperia sales
office. In case of any inconsistency or conflict with the short data sheet, the
full data sheet shall prevail.
Product specification — The information and data provided in a Product
data sheet shall define the specification of the product as agreed between
Nexperia and its customer, unless Nexperia and customer have explicitly
agreed otherwise in writing. In no event however, shall an agreement be
valid in which the Nexperia product is deemed to offer functions and qualities
beyond those described in the Product data sheet.
Disclaimers
Limited warranty and liability — Information in this document is believed
to be accurate and reliable. However, Nexperia does not give any
representations or warranties, expressed or implied, as to the accuracy
or completeness of such information and shall have no liability for the
consequences of use of such information. Nexperia takes no responsibility
for the content in this document if provided by an information source outside
of Nexperia.
In no event shall Nexperia be liable for any indirect, incidental, punitive,
special or consequential damages (including - without limitation - lost
profits, lost savings, business interruption, costs related to the removal
or replacement of any products or rework charges) whether or not such
damages are based on tort (including negligence), warranty, breach of
contract or any other legal theory.
Notwithstanding any damages that customer might incur for any reason
whatsoever, Nexperia’s aggregate and cumulative liability towards customer
for the products described herein shall be limited in accordance with the
Terms and conditions of commercial sale of Nexperia.
Right to make changes — Nexperia reserves the right to make changes
to information published in this document, including without limitation
specifications and product descriptions, at any time and without notice. This
document supersedes and replaces all information supplied prior to the
publication hereof.
Suitability for use — Nexperia products are not designed, authorized or
warranted to be suitable for use in life support, life-critical or safety-critical
systems or equipment, nor in applications where failure or malfunction
of an Nexperia product can reasonably be expected to result in personal
74LV123
Product data sheet
Applications — Applications that are described herein for any of these
products are for illustrative purposes only. Nexperia makes no representation
or warranty that such applications will be suitable for the specified use
without further testing or modification.
Customers are responsible for the design and operation of their applications
and products using Nexperia products, and Nexperia accepts no liability for
any assistance with applications or customer product design. It is customer’s
sole responsibility to determine whether the Nexperia product is suitable
and fit for the customer’s applications and products planned, as well as
for the planned application and use of customer’s third party customer(s).
Customers should provide appropriate design and operating safeguards to
minimize the risks associated with their applications and products.
Nexperia does not accept any liability related to any default, damage, costs
or problem which is based on any weakness or default in the customer’s
applications or products, or the application or use by customer’s third party
customer(s). Customer is responsible for doing all necessary testing for the
customer’s applications and products using Nexperia products in order to
avoid a default of the applications and the products or of the application or
use by customer’s third party customer(s). Nexperia does not accept any
liability in this respect.
Limiting values — Stress above one or more limiting values (as defined in
the Absolute Maximum Ratings System of IEC 60134) will cause permanent
damage to the device. Limiting values are stress ratings only and (proper)
operation of the device at these or any other conditions above those
given in the Recommended operating conditions section (if present) or the
Characteristics sections of this document is not warranted. Constant or
repeated exposure to limiting values will permanently and irreversibly affect
the quality and reliability of the device.
Terms and conditions of commercial sale — Nexperia products are
sold subject to the general terms and conditions of commercial sale, as
published at http://www.nexperia.com/profile/terms, unless otherwise agreed
in a valid written individual agreement. In case an individual agreement is
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apply. Nexperia hereby expressly objects to applying the customer’s general
terms and conditions with regard to the purchase of Nexperia products by
customer.
No offer to sell or license — Nothing in this document may be interpreted
or construed as an offer to sell products that is open for acceptance or the
grant, conveyance or implication of any license under any copyrights, patents
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Export control — This document as well as the item(s) described herein
may be subject to export control regulations. Export might require a prior
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Non-automotive qualified products — Unless this data sheet expressly
states that this specific Nexperia product is automotive qualified, the
product is not suitable for automotive use. It is neither qualified nor tested in
accordance with automotive testing or application requirements. Nexperia
accepts no liability for inclusion and/or use of non-automotive qualified
products in automotive equipment or applications.
In the event that customer uses the product for design-in and use in
automotive applications to automotive specifications and standards,
customer (a) shall use the product without Nexperia’s warranty of the
product for such automotive applications, use and specifications, and (b)
whenever customer uses the product for automotive applications beyond
Nexperia’s specifications such use shall be solely at customer’s own risk,
and (c) customer fully indemnifies Nexperia for any liability, damages or failed
product claims resulting from customer design and use of the product for
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Translations — A non-English (translated) version of a document is for
reference only. The English version shall prevail in case of any discrepancy
between the translated and English versions.
Trademarks
Notice: All referenced brands, product names, service names and
trademarks are the property of their respective owners.
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74LV123
Nexperia
Dual retriggerable monostable multivibrator with reset
Contents
1. General description...................................................... 1
2. Features and benefits.................................................. 1
3. Ordering information....................................................1
4. Functional diagram.......................................................2
5. Pinning information......................................................4
5.1. Pinning.........................................................................4
5.2. Pin description............................................................. 4
6. Functional description................................................. 5
7. Limiting values............................................................. 5
8. Recommended operating conditions..........................5
9. Static characteristics....................................................6
10. Dynamic characteristics............................................ 8
10.1. Waveforms and test circuit...................................... 10
11. Application information............................................11
11.1. Timing components..................................................11
11.1.1. Basic timing.......................................................... 11
11.1.2. Retrigger timing.....................................................12
11.1.3. Reset timing.......................................................... 13
11.2. Power considerations...............................................13
11.2.1. Power-up...............................................................13
11.2.2. Power-down.......................................................... 13
12. Package outline........................................................ 14
13. Abbreviations............................................................ 17
14. Revision history........................................................17
15. Legal information......................................................18
©
Nexperia B.V. 2023. All rights reserved
For more information, please visit: http://www.nexperia.com
For sales office addresses, please send an email to: salesaddresses@nexperia.com
Date of release: 14 July 202
74LV123
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 10 — 14 July 202
©
Nexperia B.V. 2023. All rights reserved
19 / 19