74HC123-Q100 [NEXPERIA]
Dual retriggerable monostable multivibrator with reset;
| 型号： | 74HC123-Q100 |
| 厂家： | 
Nexperia |
| 描述： | Dual retriggerable monostable multivibrator with reset |
| 文件： | 总23页 (文件大小：846K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
74HC123-Q100; 74HCT123-Q100
Dual retriggerable monostable multivibrator with reset
Rev. 2 — 19 January 2015
Product data sheet
1. General description
The 74HC123-Q100; 74HCT123-Q100 are high-speed Si-gate CMOS devices and are pin
compatible with Low-power Schottky TTL (LSTTL). They are specified in compliance with
JEDEC standard no. 7A.
The 74HC123-Q100; 74HCT123-Q100 are dual retriggerable monostable multivibrators
with output pulse width control by three methods:
1. The basic pulse is defined by the selection of the external resistor (REXT) and
capacitor (CEXT).
2. Once triggered, the basic output pulse width may be extended by retriggering the
gated active LOW-going edge input (nA) or the active HIGH-going edge input (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, which also inhibits the triggering.
3. An internal connection from nRD to the input gates makes it possible to trigger the
circuit by a HIGH-going signal at input nRD as shown in Table 3.
Schmitt trigger action in the nA and nB inputs, makes the circuit highly tolerant to slower
input rise and fall times.
This product has been qualified to the Automotive Electronics Council (AEC) standard
Q100 (Grade 1) and is suitable for use in automotive applications.
2. Features and benefits
Automotive product qualification in accordance with AEC-Q100 (Grade 1)
Specified from 40 C to +85 C and from 40 C to +125 C
DC triggered from active HIGH or active LOW inputs
Retriggerable for very long pulses up to 100 % duty factor
Direct reset terminates output pulse
Schmitt trigger action on all inputs except for the reset input
ESD protection:
MIL-STD-883, method 3015 exceeds 2000 V
HBM JESD22-A114F exceeds 2000 V
MM JESD22-A115-A exceeds 200 V (C = 200 pf, R = 0 )
Specified from 40 C to +85 C and from 40 C to +125 C
74HC123-Q100; 74HCT123-Q100
Nexperia
Dual retriggerable monostable multivibrator with reset
3. Ordering information
Table 1.
Ordering information
Type number
Package
Temperature range Name
Description
Version
74HC123D-Q100
74HCT123D-Q100
40 C to +125 C
SO16
plastic small outline package; 16 leads;
body width 3.9 mm
SOT109-1
74HC123PW-Q100 40 C to +125 C
TSSOP16
plastic thin shrink small outline package; 16 leads; SOT403-1
body width 4.4 mm
74HCT123PW-Q100
74HC123BQ-Q100
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
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Fig 1. Functional diagram
74HC_HCT123_Q100
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 2 — 19 January 2015
2 of 23
74HC123-Q100; 74HCT123-Q100
Nexperia
Dual retriggerable monostable multivibrator with reset
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Fig 2. Logic symbol
Fig 3. IEC logic symbol
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9
&&
Q4
Q4
Q5'
5
5
&/
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9
&&
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&&
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Q%
5
PQDꢃꢁꢄ
Fig 4. Logic diagram
74HC_HCT123_Q100
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 2 — 19 January 2015
3 of 23
74HC123-Q100; 74HCT123-Q100
Nexperia
Dual retriggerable monostable multivibrator with reset
5. Pinning information
5.1 Pinning
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&&
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ꢀꢅ ꢀ&(;7
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&&
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9
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*1'
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DDDꢅꢀꢀꢆꢀꢇꢆ
ꢆ
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DDDꢅꢀꢀꢆꢀꢇꢇ
(1) This is not a supply pin. The substrate is attached to this
pad using conductive die attach material. There is no
electrical or mechanical requirement to solder this pad.
However, if it is soldered, the solder land should remain
floating or be connected to VCC
.
Fig 5. Pin configuration for SO16 and TSSOP16
Fig 6. Pin configuration for DHVQFN16
5.2 Pin description
Table 2.
Symbol
1A
Pin description
Pin
1
Description
negative-edge triggered input 1
positive-edge triggered input 1
direct reset LOW and positive-edge triggered input 1
active LOW output 1
1B
2
1RD
3
1Q
4
2Q
5
active HIGH output 2
2CEXT
6
external capacitor connection 2
external resistor and capacitor connection 2
ground (0 V)
2REXT/CEXT
7
GND
8
2A
9
negative-edge triggered input 2
positive-edge triggered input 2
direct reset LOW and positive-edge triggered input 2
active LOW output 2
2B
10
11
12
13
14
15
16
2RD
2Q
1Q
active HIGH output 1
1CEXT
1REXT/CEXT
VCC
external capacitor connection 1
external resistor and capacitor connection 1
supply voltage
74HC_HCT123_Q100
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 2 — 19 January 2015
4 of 23
74HC123-Q100; 74HCT123-Q100
Nexperia
Dual retriggerable monostable multivibrator with reset
6. Functional description
Table 3.
Function table[1]
Input
nRD
L
Output
nA
X
nB
X
nQ
nQ
H
L
X
H
X
X
L[2]
L[2]
H[2]
H[2]
X
L
H
L
H
H
H
L
[1] 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.
[2] If the monostable was triggered before this condition was established, the pulse continues 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
VCC
IIK
Parameter
Conditions
Min
Max
+7
Unit
V
supply voltage
0.5
input clamping current
output clamping current
output current
VI < 0.5 V or VI > VCC + 0.5 V
VO < 0.5 V or VO > VCC + 0.5 V
-
-
-
20
20
25
mA
mA
mA
IOK
IO
except for pins nREXT/CEXT;
VO = 0.5 V to (VCC + 0.5 V)
ICC
supply current
-
50
mA
mA
C
IGND
Tstg
Ptot
ground current
-
50
+150
storage temperature
total power dissipation
SO16 package
65
[1]
[2]
[3]
-
-
-
500
500
500
mW
mW
mW
TSSOP16 package
DHVQFN16 package
[1] For SO16 packages: Ptot derates linearly with 8 mW/K above 70 C.
[2] For TSSOP16 packages: Ptot derates linearly with 5.5 mW/K above 60 C.
[3] For DHVQFN16 packages: Ptot derates linearly with 4.5 mW/K above 60 C.
74HC_HCT123_Q100
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 2 — 19 January 2015
5 of 23
74HC123-Q100; 74HCT123-Q100
Nexperia
Dual retriggerable monostable multivibrator with reset
8. Recommended operating conditions
Table 5.
Recommended operating conditions
Symbol Parameter
Conditions
74HC123-Q100
74HCT123-Q100
Unit
Min
Typ
Max
Min
Typ
Max
VCC
VI
supply voltage
input voltage
output voltage
2.0
0
5.0
6.0
VCC
VCC
4.5
0
5.0
5.5
VCC
VCC
V
V
V
-
-
-
-
VO
0
0
t/V
input transition rise and
fall rate
nRD input
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
-
-
625
139
83
-
-
-
ns/V
-
-
1.67
-
-
-
1.67
-
139 ns/V
ns/V
+125 C
-
Tamb
ambient temperature
40
+25
+125
40
+25
9. Static characteristics
Table 6.
Static characteristics
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter
Conditions
25 C
40 C to +85 C 40 C to +125 C Unit
Min Typ Max
Min
Max
Min
Max
74HC123-Q100
VIH
HIGH-level
input voltage
VCC = 2.0 V
1.5
1.2
2.4
3.2
0.8
-
-
1.5
-
-
1.5
-
-
V
V
V
V
V
V
VCC = 4.5 V
3.15
3.15
3.15
VCC = 6.0 V
4.2
-
4.2
-
4.2
-
VIL
LOW-level
input voltage
VCC = 2.0 V
-
-
-
0.5
-
-
-
0.5
1.35
1.8
-
-
-
0.5
1.35
1.8
VCC = 4.5 V
2.1 1.35
VCC = 6.0 V
2.8
1.8
VOH
HIGH-level
VI = VIH or VIL
output voltage
IO = 20 A; VCC = 2.0 V
IO = 20 A; VCC = 4.5 V
IO = 20 A; VCC = 6.0 V
IO = 4 mA; VCC = 4.5 V
IO = 5.2 mA; VCC = 6.0 V
VI = VIH or VIL
1.9
4.4
5.9
2.0
4.5
6.0
-
-
-
-
-
1.9
4.4
-
-
-
-
-
1.9
4.4
5.9
3.7
5.2
-
-
-
-
-
V
V
V
V
V
5.9
3.98 4.32
5.48 5.81
3.84
5.34
VOL
LOW-level
output voltage
IO = 20 A; VCC = 2.0 V
IO = 20 A; VCC = 4.5 V
IO = 20 A; VCC = 6.0 V
IO = 4 mA; VCC = 4.5 V
IO = 5.2 mA; VCC = 6.0 V
-
-
-
-
-
-
0
0
0
0.1
0.1
0.1
-
-
-
-
-
-
0.1
0.1
-
-
-
-
-
-
0.1
0.1
0.1
0.4
0.4
1.0
V
V
0.1
V
0.15 0.26
0.16 0.26
0.33
0.33
1.0
V
V
II
input leakage VI = VCC or GND; VCC = 6.0 V
current
-
0.1
A
ICC
supply current VI = VCC or GND; IO = 0 A;
VCC = 6.0 V
-
-
8.0
-
80
-
160
A
74HC_HCT123_Q100
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 2 — 19 January 2015
6 of 23
74HC123-Q100; 74HCT123-Q100
Nexperia
Dual retriggerable monostable multivibrator with reset
Table 6.
Static characteristics …continued
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter
Conditions
25 C
40 C to +85 C 40 C to +125 C Unit
Min Typ Max
Min
Max
Min
Max
CI
input
-
3.5
-
-
-
-
-
pF
capacitance
74HCT123-Q100
VIH
HIGH-level
input voltage
VCC = 4.5 V to 5.5 V
VCC = 4.5 V to 5.5 V
2.0
-
1.6
1.2
-
2.0
-
-
2.0
-
-
V
V
VIL
LOW-level
0.8
0.8
0.8
input voltage
VOH
HIGH-level
output voltage
VI = VIH or VIL; VCC = 4.5 V
IO = 20 A
4.4
4.5
-
-
4.4
-
-
4.4
3.7
-
-
V
V
IO = 4 mA
3.98 4.32
3.84
VOL
LOW-level
output voltage
VI = VIH or VIL; VCC = 4.5 V
IO = 20 A
-
-
-
0
0.1
-
-
-
0.1
-
-
-
0.1
0.4
V
IO = 4.0 mA
0.15 0.26
0.33
1.0
V
II
input leakage VI = VCC or GND; VCC = 5.5 V
current
-
0.1
1.0
A
ICC
ICC
supply current VI = VCC or GND; IO = 0 A;
VCC = 5.5 V
-
-
8.0
-
80
-
160
A
additional
supply current VI = VCC 2.1 V;
other inputs at VCC or GND;
per input pin; IO = 0 A;
VCC = 4.5 V to 5.5 V
pins nA, nB
-
-
-
35
50
125
180
-
-
-
-
160
225
-
-
-
-
170
245
-
A
A
pF
pin nRD
CI
input
3.5
capacitance
74HC_HCT123_Q100
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 2 — 19 January 2015
7 of 23
74HC123-Q100; 74HCT123-Q100
Nexperia
Dual retriggerable monostable multivibrator with reset
10. Dynamic characteristics
Table 7.
Dynamic characteristics
Voltages are referenced to GND (ground = 0 V); CL = 50 pF unless otherwise specified; for test circuit see Figure 12.
Symbol Parameter Conditions
74HC123-Q100
25 C
40 C to +85 C 40 C to +125 C Unit
Min Typ Max
Min
Max
Min
Max
[1]
tpd
propagation nRD, nA, nB to nQ or nQ;
delay
CEXT = 0 pF; REXT = 5 k;
see Figure 9
VCC = 2.0 V
-
-
-
-
83
30
26
24
255
51
-
-
-
-
-
320
64
-
-
-
-
-
385
77
-
ns
ns
ns
ns
VCC = 4.5 V
VCC = 5 V; CL = 15 pF
VCC = 6.0 V
43
54
65
nRD (reset) to nQ or nQ;
CEXT = 0 pF; REXT = 5 k;
see Figure 9
VCC = 2.0 V
VCC = 4.5 V
-
-
-
-
66
24
20
19
215
43
-
-
-
-
-
270
54
-
-
-
-
-
325
65
-
ns
ns
ns
ns
VCC = 5 V; CL = 15 pF
VCC = 6.0 V
37
46
55
[1]
tt
transition
time
see Figure 9
VCC = 2.0 V
-
-
-
19
7
75
15
13
-
-
-
95
19
16
-
-
-
110
22
ns
ns
ns
VCC = 4.5 V
VCC = 6.0 V
6
19
tW
pulse width nA LOW; see Figure 10
VCC = 2.0 V
100
20
8
3
2
-
-
-
125
25
-
-
-
150
30
-
-
-
ns
ns
ns
VCC = 4.5 V
VCC = 6.0 V
17
21
26
nB HIGH; see Figure 10
VCC = 2.0 V
100
20
17
6
-
-
-
125
25
-
-
-
150
30
-
-
-
ns
ns
ns
VCC = 4.5 V
VCC = 6.0 V
17
5
21
26
nRD LOW; see Figure 11
VCC = 2.0 V
100
20
14
5
-
-
-
125
25
-
-
-
150
30
-
-
-
ns
ns
ns
VCC = 4.5 V
VCC = 6.0 V
17
4
21
26
[2]
nQ HIGH and nQ LOW;
VCC = 5.0 V;
see Figure 10 and Figure 11
CEXT = 100 nF; REXT = 10
k
-
-
450
75
-
-
-
-
-
-
-
-
-
-
s
CEXT = 0 pF; REXT = 5 k
ns
74HC_HCT123_Q100
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 2 — 19 January 2015
8 of 23
74HC123-Q100; 74HCT123-Q100
Nexperia
Dual retriggerable monostable multivibrator with reset
Table 7.
Dynamic characteristics …continued
Voltages are referenced to GND (ground = 0 V); CL = 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
[3][4]
trtrig
retrigger
time
nA, nB; CEXT = 0 pF; REXT
5 k; VCC = 5.0 V;
see Figure 10
=
-
110
-
-
-
-
-
ns
REXT
external
see Figure 7
resistance
VCC = 2.0 V
10
2
-
-
-
1000
1000
-
-
-
-
-
-
-
-
-
-
-
-
-
k
k
pF
VCC = 5.0 V
[4]
[5]
CEXT
CPD
external
capacitance
VCC = 5.0 V; see Figure 7
-
power
per monostable; VI = GND
-
54
-
-
-
-
-
pF
dissipation to VCC
capacitance
74HCT123-Q100
tPHL
HIGH to
LOW
nRD, nA, nB to nQ or nQ;
CEXT = 0 pF; REXT = 5 k;
propagation see Figure 9
delay
VCC = 4.5 V
-
-
30
26
51
-
-
-
64
-
-
-
77
-
ns
ns
VCC = 5 V; CL = 15 pF
nRD (reset) to nQ or nQ;
CEXT = 0 pF; REXT = 5 k;
see Figure 9
VCC = 4.5 V
-
-
27
23
46
-
-
-
58
-
-
-
69
-
ns
ns
VCC = 5 V; CL = 15 pF
tPLH
LOW to
HIGH
nRD, nA, nB to nQ or nQ;
CEXT = 0 pF; REXT = 5 k;
propagation see Figure 9
delay
VCC = 4.5 V
-
-
28
26
51
-
-
-
64
-
-
-
77
-
ns
ns
VCC = 5 V; CL = 15 pF
nRD (reset) to nQ or nQ;
CEXT = 0 pF; REXT = 5 k;
see Figure 9
VCC = 4.5 V
-
-
-
23
23
7
46
-
-
-
-
58
-
-
-
-
69
-
ns
ns
ns
VCC = 5 V; CL = 15 pF
VCC = 4.5 V; see Figure 9
[1]
tt
transition
time
15
19
22
tW
pulse width VCC = 4.5 V
nA LOW; see Figure 10
20
20
20
3
5
7
-
-
-
25
25
25
-
-
-
30
30
30
-
-
-
ns
ns
ns
nB HIGH; see Figure 10
nRD LOW; see Figure 11
nQ HIGH and nQ LOW;
[2]
VCC = 5.0 V; see Figure 10
and Figure 11
CEXT = 100 nF; REXT = 10
k
-
-
450
75
-
-
-
-
-
-
-
-
-
s
CEXT = 0 pF; REXT = 5 k
-
ns
74HC_HCT123_Q100
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 2 — 19 January 2015
9 of 23
74HC123-Q100; 74HCT123-Q100
Nexperia
Dual retriggerable monostable multivibrator with reset
Table 7.
Dynamic characteristics …continued
Voltages are referenced to GND (ground = 0 V); CL = 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
[3][4]
trtrig
retrigger
time
nA, nB; CEXT = 0 pF; REXT
5 k; VCC = 5.0 V;
see Figure 10
=
-
2
-
110
-
-
-
-
-
ns
REXT
CEXT
CPD
external
timing
resistor
VCC = 5.0 V; see Figure 7
VCC = 5.0 V; see Figure 7
per monostable;
-
1000
-
-
-
-
-
-
-
-
-
-
-
-
k
pF
pF
[4]
[5]
external
timing
capacitor
-
-
-
power
-
56
dissipation VI = GND to VCC 1.5 V
capacitance
[1] tpd is the same as tPHL and tPLH; tt is the same as tTHL and tTLH
[2] For other REXT and CEXT combinations, see Figure 7. If CEXT > 10 nF, the following formula is valid.
tW = K REXT CEXT, where:
tW = typical output pulse width in ns;
REXT = external resistor in k;
CEXT = external capacitor in pF;
K = constant = 0.45 for VCC = 5.0 V and 0.55 for VCC = 2.0 V.
The inherent test jig and pin capacitance at pins 15 and 7 (nREXT/CEXT) is approximately 7 pF.
[3] The time to retrigger the monostable multivibrator depends on the values of REXT and CEXT. The output pulse width is only extended
when the time between the active-going edges of the trigger input pulses meets the minimum retrigger time. If CEXT >10 pF, the next
formula (at VCC = 5.0 V) for the setup time of a retrigger pulse is valid:
trtrig = 30 + 0.19 REXT CEXT0.9 + 13 REXT1.05, where:
trtrig = retrigger time in ns;
CEXT = external capacitor in pF; REXT = external resistor in k.
The inherent test jig and pin capacitance at pins 15 and 7 (nREXT/CEXT) is 7 pF.
[4] When the device is powered-up, initiate the device via a reset pulse, when CEXT < 50 pF.
[5] CPD is used to determine the dynamic power dissipation (PD in W).
PD = CPD VCC2 fi + (CL VCC2 fo) + 0.75 CEXT VCC2 fo + D 16 VCC where:
fi = input frequency in MHz;
fo = output frequency in MHz;
D = duty factor in %;
CL = output load capacitance in pF;
VCC = supply voltage in V;
CEXT = timing capacitance in pF;
(CL VCC2 fo) sum of outputs.
74HC_HCT123_Q100
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 2 — 19 January 2015
10 of 23
74HC123-Q100; 74HCT123-Q100
Nexperia
Dual retriggerable monostable multivibrator with reset
ꢀꢀꢁDDDꢂꢁꢁ
ꢀꢀꢁDDDꢂꢁꢈ
ꢉ
ꢀꢇ
ꢇꢏꢋ
W
:ꢌ
ꢍQVꢎ
ꢐ.ꢐꢌIDFWRU
ꢍꢀꢎ
ꢍꢁꢎ
ꢄ
ꢅ
ꢂ
ꢁ
ꢀꢇ
ꢇꢏꢉ
ꢇꢏꢅ
ꢇꢏꢁ
ꢇ
ꢍꢂꢎ
ꢍꢅꢎ
ꢀꢇ
ꢀꢇ
ꢀꢇ
ꢀꢇ
ꢁ
ꢂ
ꢅ
ꢀ
ꢀꢇ
ꢀꢇ
ꢀꢇ
ꢀꢇ
ꢌꢍS)ꢎ
ꢇ
ꢁ
ꢅ
ꢉ
ꢋ
&
(;7
9
ꢌꢍ9ꢎ
&&
VCC = 5.0 V; Tamb = 25 C.
EXT = 100 k
C
EXT = 10 nF; REXT = 10 k to 100 k.
(1)
R
Tamb = 25 C.
(2) REXT = 50 k
(3) REXT = 10 k
(4) REXT = 2 k
Fig 7. Typical output pulse width as a function of the
external capacitor value
Fig 8. 74HC123-Q100 typical ‘K’ factor as function of
VCC
74HC_HCT123_Q100
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©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 2 — 19 January 2015
11 of 23
74HC123-Q100; 74HCT123-Q100
Nexperia
Dual retriggerable monostable multivibrator with reset
11. Waveforms
9
,
9
Q%ꢌLQSXW
*1'
0
W
:
9
,
9
0
Q$ꢌLQSXW
*1'
W
:
9
,
9
Q5'ꢌLQSXW
*1'
0
W
W
W
:
3/+
3/+
9
2+
9
<
Q4ꢌRXWSXW
9
0
9
;
9
2/
W
W
W
W
7+/
3+/
3/+
3+/
W
ꢍUHVHWꢎ
:
W
:
9
2+
9
<
Q4ꢌRXWSXW
9
0
9
;
9
2/
W
W
W
3/+
ꢍUHVHWꢎ
W
3+/
3+/
7/+
ꢀꢀꢁDDDꢉꢉꢁ
Measurement points are given in Table 8.
OL and VOH are typical voltage output levels that occur with the output load.
V
Fig 9. Propagation delays from inputs (nA, nB, nRD) to outputs (nQ, nQ) and output transition times
74HC_HCT123_Q100
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 2 — 19 January 2015
12 of 23
74HC123-Q100; 74HCT123-Q100
Nexperia
Dual retriggerable monostable multivibrator with reset
Q%ꢌLQSXW
Q$ꢌLQSXW
W
:
W
W
:
UWULJꢌ
Q4ꢌRXWSXW
W
W
:
:
W
PQDꢃꢈꢁ
:
nRD = HIGH
Fig 10. Output pulse control using retrigger pulse
Q%ꢌLQSXW
Q5'ꢌLQSXW
W
:
Q4ꢌRXWSXW
W
W
:
:
PQDꢃꢈꢈ
nA = LOW
Fig 11. Output pulse control using reset input nRD
74HC_HCT123_Q100
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 2 — 19 January 2015
13 of 23
74HC123-Q100; 74HCT123-Q100
Nexperia
Dual retriggerable monostable multivibrator with reset
W
:
9
,
ꢆꢇꢌꢑ
QHJDWLYHꢌ
SXOVH
9
9
9
0
0
0
ꢀꢇꢌꢑ
ꢇꢌ9
W
W
U
I
W
W
U
I
9
,
ꢆꢇꢌꢑ
SRVLWLYHꢌ
SXOVH
9
0
ꢀꢇꢌꢑ
ꢇꢌ9
W
:
9
9
&&
&&
9
,
9
2
ꢌ
5
/
6ꢀ
*
RSHQ
'87
5
7
&
/
ꢀꢀꢁDDGꢊꢄꢇ
Test data is given in Table 8.
Definitions test circuit:
RT = Termination resistance should be equal to output impedance Zo of the pulse generator.
CL = Load capacitance including jig and probe capacitance.
RL = Load resistance.
S1 = Test selection switch.
Fig 12. Test circuit for measuring switching times
Table 8.
Type
Test data
Input
VI
Load
S1 position
tPHL, tPLH
open
tr, tf
6 ns
6 ns
CL
RL
74HC123-Q100
74HCT123-Q100
VCC
3 V
15 pF, 50 pF
15 pF, 50 pF
1 k
1 k
open
74HC_HCT123_Q100
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 2 — 19 January 2015
14 of 23
74HC123-Q100; 74HCT123-Q100
Nexperia
Dual retriggerable monostable multivibrator with reset
12. Application information
12.1 Timing component connections
The basic output pulse width is defined by the values of the external timing components
EXT and CEXT
R
.
&
(;7
5
(;7
ꢍꢀꢎ
9
&&
*1'
ꢋ
Q&(;7 Q5(;7ꢃ&(;7
ꢀꢅꢌꢍꢉꢎ ꢀꢄꢌꢍꢈꢎ
ꢀꢂꢌꢍꢄꢎ
ꢂꢃꢄ
Q4
Q4
ꢀꢌꢍꢆꢎ
Q$
Q%
ꢁꢌꢍꢀꢇꢎ
ꢅꢌꢍꢀꢁꢎ
ꢂꢌꢍꢀꢀꢎ
Q5'
ꢀꢀꢁDDDꢄꢃꢆ
(1) For minimum noise generation, ground pins 6 (2CEXT) and 14 (1CEXT) externally to pin 8 (GND).
Fig 13. Timing component connections
12.2 Power-up considerations
When the monostable 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
circuit shown in Figure 14.
&
(;7
5
(;7
9
&&
*1'
ꢋ
Q&(;7
ꢀꢅꢌꢍꢉꢎ
Q5(;7ꢃ&(;7
ꢀꢄꢌꢍꢈꢎ
ꢀꢂꢌꢍꢄꢎ
ꢂꢃꢄ
Q4
ꢀꢌꢍꢆꢎ
Q$
Q%
ꢁꢌꢍꢀꢇꢎ
ꢅꢌꢍꢀꢁꢎ
Q4
ꢂꢌꢍꢀꢀꢎ
Q5'
9
5(6(7
&&
ꢀꢀꢁDDDꢂꢁꢇ
Fig 14. Power-up output pulse elimination circuit
74HC_HCT123_Q100
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 2 — 19 January 2015
15 of 23
74HC123-Q100; 74HCT123-Q100
Nexperia
Dual retriggerable monostable multivibrator with reset
12.3 Power-down considerations
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. The damage is due to the capacitor discharging through the input protection
diodes. To avoid this possibility, use a damping diode (DEXT) and connect as shown in
Figure 15. DEXT is preferably a germanium or Schottky type diode able to withstand large
current surges.
'
(;7
(;7
&
(;7
5
9
&&
*1'
ꢋ
Q&(;7
ꢀꢅꢌꢍꢉꢎ
Q5(;7ꢃ&(;7
ꢀꢄꢌꢍꢈꢎ
ꢀꢂꢌꢍꢄꢎ
ꢂꢃꢄ
Q4
ꢀꢌꢍꢆꢎ
Q$
Q%
ꢁꢌꢍꢀꢇꢎ
ꢅꢌꢍꢀꢁꢎ
Q4
ꢂꢌꢍꢀꢀꢎ
ꢀꢀꢁDDDꢂꢁꢆ
Q5'
Fig 15. Power-down protection circuit
74HC_HCT123_Q100
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 2 — 19 January 2015
16 of 23
74HC123-Q100; 74HCT123-Q100
Nexperia
Dual retriggerable monostable multivibrator with reset
13. Package outline
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Fig 16. Package outline SOT109-1 (SO16)
74HC_HCT123_Q100
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 2 — 19 January 2015
17 of 23
74HC123-Q100; 74HCT123-Q100
Nexperia
Dual retriggerable monostable multivibrator with reset
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Fig 17. Package outline SOT403-1 (TSSOP16)
74HC_HCT123_Q100
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 2 — 19 January 2015
18 of 23
74HC123-Q100; 74HCT123-Q100
Nexperia
Dual retriggerable monostable multivibrator with reset
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Fig 18. Package outline SOT763-1 (DHVQFN16)
74HC_HCT123_Q100
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 2 — 19 January 2015
19 of 23
74HC123-Q100; 74HCT123-Q100
Nexperia
Dual retriggerable monostable multivibrator with reset
14. Abbreviations
Table 9.
Acronym
CMOS
DUT
Abbreviations
Abbreviation
Complementary Metal Oxide Semiconductor
Device Under Test
ESD
ElectroStatic Discharge
Human Body Model
HBM
LSTTL
MM
Low-power Schottky Transistor-Transistor Logic
Machine Model
MIL
Military
15. Revision history
Table 10. Revision history
Document ID
Release date
Data sheet status
Change notice
Supersedes
74HC_HCT123_Q100 v.2 20150119
Product data sheet
-
74HC_HCT123_Q100 v.1
Modifications:
• Table 7: Power dissipation capacitance condition for 74HCT123-Q100 is corrected.
74HC_HCT123_Q100 v.1 20120801
Product data sheet
-
-
74HC_HCT123_Q100
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 2 — 19 January 2015
20 of 23
74HC123-Q100; 74HCT123-Q100
Nexperia
Dual retriggerable monostable multivibrator with reset
16. Legal information
16.1 Data sheet status
Document status[1][2]
Product status[3]
Development
Definition
Objective [short] data sheet
This document contains data from the objective specification for product development.
This document contains data from the preliminary specification.
This document contains the product specification.
Preliminary [short] data sheet Qualification
Product [short] data sheet Production
[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 URL http://www.nexperia.com.
Suitability for use in automotive applications — This Nexperia
product has been qualified for use in automotive
16.2 Definitions
applications. Unless otherwise agreed in writing, the product is 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 a Nexperia product can reasonably be expected
to result in personal 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.
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.
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
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.
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,
16.3 Disclaimers
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
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.
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.
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.
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 concluded only the terms and conditions of the respective
agreement shall apply. Nexperia hereby expressly objects to
applying the customer’s general terms and conditions with regard to the
purchase of Nexperia products by customer.
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.
74HC_HCT123_Q100
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 2 — 19 January 2015
21 of 23
74HC123-Q100; 74HCT123-Q100
Nexperia
Dual retriggerable monostable multivibrator with reset
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 or
other industrial or intellectual property rights.
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.
Export control — This document as well as the item(s) described herein
may be subject to export control regulations. Export might require a prior
authorization from competent authorities.
16.4 Trademarks
Notice: All referenced brands, product names, service names and trademarks
are the property of their respective owners.
17. Contact information
For more information, please visit: http://www.nexperia.com
For sales office addresses, please send an email to: salesaddresses@nexperia.com
74HC_HCT123_Q100
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 2 — 19 January 2015
22 of 23
74HC123-Q100; 74HCT123-Q100
Nexperia
Dual retriggerable monostable multivibrator with reset
18. Contents
1
2
3
4
General description. . . . . . . . . . . . . . . . . . . . . . 1
Features and benefits . . . . . . . . . . . . . . . . . . . . 1
Ordering information. . . . . . . . . . . . . . . . . . . . . 2
Functional diagram . . . . . . . . . . . . . . . . . . . . . . 2
5
5.1
5.2
Pinning information. . . . . . . . . . . . . . . . . . . . . . 4
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4
6
Functional description . . . . . . . . . . . . . . . . . . . 5
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 5
Recommended operating conditions. . . . . . . . 6
Static characteristics. . . . . . . . . . . . . . . . . . . . . 6
Dynamic characteristics . . . . . . . . . . . . . . . . . . 8
Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7
8
9
10
11
12
Application information. . . . . . . . . . . . . . . . . . 15
Timing component connections . . . . . . . . . . . 15
Power-up considerations . . . . . . . . . . . . . . . . 15
Power-down considerations . . . . . . . . . . . . . . 16
12.1
12.2
12.3
13
14
15
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 17
Abbreviations. . . . . . . . . . . . . . . . . . . . . . . . . . 20
Revision history. . . . . . . . . . . . . . . . . . . . . . . . 20
16
Legal information. . . . . . . . . . . . . . . . . . . . . . . 21
Data sheet status . . . . . . . . . . . . . . . . . . . . . . 21
Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 22
16.1
16.2
16.3
16.4
17
18
Contact information. . . . . . . . . . . . . . . . . . . . . 22
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
© Nexperia B.V. 2017. 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: 19 January 2015
相关型号：
74HC123BQ-Q100
HC/UH SERIES, DUAL MONOSTABLE MULTIVIBRATOR, PQCC16, 2.50 X 3.50 MM, 0.85 MM HEIGHT, PLASTIC, MO-241, SOT763-1, DHVQFN-16
NXP
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