74HCT4538-Q100
Dual retriggerable precision monostable multivibrator
Rev. 3 — 17 March 2017
1
Product data sheet
General description
The 74HCT4538-Q100 is a dual retriggerable-resettable monostable multivibrator. Each
multivibrator has two trigger/retrigger inputs (nA and nB), a direct reset input (nCD),
two complementary outputs (nQ and nQ), and two pins (nREXT/CEXT and nCEXT)
for connecting the external timing components CEXT and REXT. Typical pulse width
variation over temperature range is ± 0.2 %. The device may be triggered by either the
positive or the negative edges of the input pulse. The duration and accuracy of the output
pulse are determined by the external timing components CEXT and REXT. The output
pulse width (TW) is equal to 0.7 × REXT × CEXT. The linear design techniques guarantee
precise control of the output pulse width. A LOW level at nCD terminates the output pulse
immediately. Schmitt-trigger action in the trigger inputs makes the circuit highly tolerant
to slower rise and fall times. Inputs include clamp diodes. This enables the use of current
limiting resistors to interface inputs to voltages in excess of VCC.
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
• Tolerant of slow trigger rise and fall times
• Separate reset inputs
• Triggering from falling or rising edge
• Complies with JEDEC standard no. 7A
• TTL input levels:
• ESD protection:
– MIL-STD-883, method 3015 exceeds 2000 V
– HBM JESD22-A114F exceeds 2000 V
– MM JESD22-A115-A exceeds 200 V
• Multiple package options
74HCT4538-Q100
Nexperia
Dual retriggerable precision monostable multivibrator
3
Ordering information
Table 1. Ordering information
Type number
74HCT4538D-Q100
Package
Temperature
range
Name
Description
Version
-40 °C to +125 °C
SO16
plastic small outline package; 16 leads;
body width 3.9 mm
SOT109-1
TSSOP16 plastic thin shrink small outline package; 16 leads;
body width 4.4 mm
SOT403-1
74HCT4538PW-Q100 -40 °C to +125 °C
4
Functional diagram
2
1REXT/CEXT
1
1CEXT
5
1A
4
1B
3
1CD
14
2REXT/CEXT
15
2CEXT
11
2A
12
2B
13
2CD
1Q
6
1Q
7
2Q
10
2Q
9
001aae727
Figure 1. Functional diagram
74HCT4538_Q100
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 17 March 2017
© Nexperia B.V. 2017. All rights reserved.
2 / 20
74HCT4538-Q100
Nexperia
Dual retriggerable precision monostable multivibrator
nB
nA
VCC
nREXT/CEXT
Vref1
enable
nCEXT
GND
nCD
power-on reset
VCC
Vref2
enable
nQ
nQ
mba338
GND
Figure 2. Logic diagram (one multivibrator)
74HCT4538_Q100
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 17 March 2017
© Nexperia B.V. 2017. All rights reserved.
3 / 20
74HCT4538-Q100
Nexperia
Dual retriggerable precision monostable multivibrator
5
Pinning information
5.1 Pinning
74HCT4538-Q100
1CEXT
1
16 VCC
1REXT/CEXT
2
15 2CEXT
1CD
3
14 2REXT/CEXT
1B
4
13 2CD
1A
5
12 2B
1Q
6
11 2A
1Q
7
10 2Q
GND
8
9
74HCT4538-Q100
1CEXT
1
16 VCC
1REXT/CEXT
2
15 2CEXT
1CD
3
14 2REXT/CEXT
1B
4
13 2CD
1A
5
12 2B
1Q
6
11 2A
1Q
7
10 2Q
GND
8
2Q
aaa-026545
9
2Q
aaa-026547
Figure 3. Pin configuration for SO16
Figure 4. Pin configuration for TSSOP16
5.2 Pin description
Table 2. Pin description
Symbol
Pin
Description
1CEXT, 2CEXT
1, 15
external capacitor connection (always connected to ground)
1REXT/CEXT, 2REXT/CEXT
2, 14
external capacitor/resistor connection
1CD, 2CD
3, 13
direct reset input (active LOW)
1B, 2B
4, 12
input (LOW to HIGH triggered)
1A, 2A
5, 11
input (HIGH to LOW triggered)
1Q, 2Q
6, 10
output
1Q, 2Q
7, 9
complementary output (active LOW)
GND
8
ground (0 V)
VCC
16
supply voltage
74HCT4538_Q100
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 17 March 2017
© Nexperia B.V. 2017. All rights reserved.
4 / 20
74HCT4538-Q100
Nexperia
Dual retriggerable precision monostable multivibrator
6
Functional description
Table 3. Function table
[1]
Inputs
Outputs
nA
nB
nCD
↓
L
H
H
↑
H
X
X
L
[1]
nQ
nQ
L
H
H = HIGH voltage level; L = LOW voltage level; X = don’t care;
↑ = positive-going transition; ↓ = negative-going transition;
= one HIGH level output pulse, with the pule width determined by CEXT and REXT;
= one LOW level output pulse, with the pulse width determined by CEXT and REXT.
(1)
(1)
(2)
(1)
nB input
(3)
nA input
(4)
nCD input
nREXT/CEXT input
Vref2
Vref1
Vref1
Vref2
nQ output
T
T
(5)
T
001aae737
(1) Positive edge triggering.
(2) Positive edge re-triggering (pulse lengthening).
(3) Negative edge triggering.
(4) Reset (pulse shortening).
(5) TW = 0.7 x REXT x CEXT (see also Figure 6.
Figure 5. Timing diagram
CEXT
GND
nCEXT
REXT
VCC
nREXT/CEXT
nA
nB
nQ
T
nQ
T = 0.7 × REXT × CEXT
nCD
001aak192
Figure 6. Connection of the external timing components REXT and CEXT
74HCT4538_Q100
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 17 March 2017
© Nexperia B.V. 2017. All rights reserved.
5 / 20
74HCT4538-Q100
Nexperia
Dual retriggerable precision monostable multivibrator
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
VCC
Conditions
supply voltage
IIK
input clamping current
Min
Max
Unit
-0.5
+7.0
V
VI < -0.5 V or VI > VCC + 0.5 V
[1]
-
±20
mA
[1]
-
±20
mA
-
±25
mA
IOK
output clamping current
VO < -0.5 V or VO > VCC + 0.5 V
IO
output current
VO = -0.5 V to VCC + 0.5 V
ICC
supply current
-
+50
mA
IGND
ground current
-50
-
mA
Tstg
storage temperature
-65
+150
°C
Ptot
total power dissipation
[1]
[2]
[3]
Tamb = -40 °C to +125 °C
SO16 package
[2]
-
500
mW
TSSOP16 package
[3]
-
500
mW
The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
Ptot derates linearly with 8 mW/K above 70 °C.
Ptot derates linearly with 5.5 mW/K above 60 °C.
8
Recommended operating conditions
Table 5. Recommended operating conditions
Voltages are referenced to GND (ground = 0 V)
Symbol Parameter
Conditions
Min
Typ
Max
Unit
4.5
5.0
5.5
V
VCC
supply voltage
VI
input voltage
0
-
VCC
V
VO
output voltage
0
-
VCC
V
Tamb
ambient temperature
-40
-
+125
°C
Δt/ΔV
input transition rise and fall rate
VCC = 2.0 V
-
-
-
ns/V
VCC = 4.5 V
-
1.67
139
ns/V
VCC = 6.0 V
-
-
-
ns/V
74HCT4538_Q100
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 17 March 2017
© Nexperia B.V. 2017. All rights reserved.
6 / 20
74HCT4538-Q100
Nexperia
Dual retriggerable precision monostable multivibrator
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
Min Typ Max
Min
Max
Min
Max
Unit
VIH
HIGH-level
input voltage
VCC = 4.5 V to 5.5 V
2.0
1.6
-
2.0
-
2.0
-
V
VIL
LOW-level
input voltage
VCC = 4.5 V to 5.5 V
-
1.2
0.8
-
0.8
-
0.8
V
VOH
HIGH-level
output voltage
VI = VIH or VIL; VCC = 4.5 V
IO = -20 μA
4.4
4.5
-
4.4
-
4.4
-
V
IO = -4.0 mA
3.98 4.32
-
3.84
-
3.7
-
V
0.1
-
0.1
-
0.1
V
0.15 0.26
-
0.33
-
0.4
V
VOL
LOW-level
output voltage
II
input leakage
current
VI = VIH or VIL; VCC = 4.5 V
IO = 20 μA; VCC = 4.5 V
-
IO = 4.0 mA; VCC = 4.5 V
-
VI = VCC or GND;
VCC = 5.5 V
-
-
±0.1
-
±1
-
±1
μA
pin nREXT/CEXT;
VI = 2.0 V or GND;
other inputs at VCC or GND;
[1]
VCC = 5.5 V
-
-
±0.5
-
±5
-
±10
μA
-
-
8.0
-
80
-
160
μA
pin nA, nB
-
50
180
-
225
-
245
μA
pin nCD
-
65
234
-
293
-
319
μA
-
3.5
-
-
-
-
-
pF
ICC
supply current
VI = VCC or GND; IO = 0 A;
VCC = 5.5 V
ΔICC
additional
supply current
VI = VCC - 2.1 V; IO = 0 A;
other inputs at VCC or GND;
VCC = 4.5 V to 5.5 V
CI
[1]
input
capacitance
0
This measurement can only be carried out after a trigger pulse is applied.
74HCT4538_Q100
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 17 March 2017
© Nexperia B.V. 2017. All rights reserved.
7 / 20
74HCT4538-Q100
Nexperia
Dual retriggerable precision monostable multivibrator
10 Dynamic characteristics
Table 7. Dynamic characteristics
Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 9.
Symbol Parameter
Conditions
25 °C
Min Typ
tPLH
LOW to HIGH
propagation
delay
[1]
-40 °C to
+85 °C
-40 °C to
+125 °C
Max
Min
Max
Min
Max
Unit
nA, nB to nQ; see Figure 7
VCC = 4.5 V
-
35
60
-
75
-
90
ns
VCC = 5.0 V; CL = 15 pF
-
30
-
-
-
-
-
ns
-
35
60
-
75
-
90
ns
VCC = 4.5 V
-
35
60
-
75
-
90
ns
VCC = 5.0 V; CL = 15 pF
-
30
-
-
-
-
-
ns
-
35
60
-
75
-
90
ns
-
7
15
-
19
-
21
ns
20
11
-
25
-
30
-
ns
16
5
-
20
-
24
-
ns
20
11
-
25
-
30
-
ns
630
700
770
602
798
595
805
μs
7
2
-
9
-
11
-
ns
-
80+X
-
-
-
-
-
ns
2
-
1000
-
-
-
-
kΩ
nCD to nQ; see Figure 7
VCC = 4.5 V
tPHL
HIGH to LOW
propagation
delay
nA, nB to nQ; see Figure 7
nCD to nQ; see Figure 7
VCC = 4.5 V
tt
transition time
nQ and nQ; see Figure 7
VCC = 4.5 V
tW
pulse width
[2]
nA LOW; see Figure 8
VCC = 4.5 V
nB HIGH; see Figure 8
VCC = 4.5 V
nCD LOW; see Figure 8
VCC = 4.5 V
nQ and nQ HIGH or LOW;
see Figure 8
VCC = 5.0 V;
CEXT = 0.1 μF;
REXT = 10 kΩ
trec
recovery time
nCD to nA, nB; see Figure 8
VCC = 4.5 V
trtrig
retrigger time
nA, nB; see Figure 8;
X = CEXT / (4.5 x VCC)
VCC = 4.5 V
REXT
external timing VCC = 5.0 V
resistor
CEXT
external timing VCC = 5.0 V
capacitor
74HCT4538_Q100
Product data sheet
no limits
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 17 March 2017
© Nexperia B.V. 2017. All rights reserved.
8 / 20
74HCT4538-Q100
Nexperia
Dual retriggerable precision monostable multivibrator
Symbol Parameter
Conditions
25 °C
Min Typ
CPD
[1]
[2]
[3]
power
dissipation
capacitance
per multivibrator;
VI = GND to VCC - 1.5 V
[3]
-
[1]
-40 °C to
+85 °C
-40 °C to
+125 °C
Max
Min
Max
Min
Max
-
-
-
-
-
138
Unit
pF
Typical values are measured at nominal supply voltage (VCC = 3.3 V and VCC = 5.0 V).
tt is the same as tTHL and tTLH.
CPD is used to determine the dynamic power dissipation (PD in μW).
2
2
2
PD = CPD × VCC × fi + Σ(CL × VCC × fo) + 0.48 × CEXT × VCC × fo + D × 0.8 × VCC where:
fi = input frequency in MHz;
fo = output frequency in MHz;
2
Σ(CL × VCC × fo) = sum of the outputs;
CL = output load capacitance in pF;
VCC = supply voltage in V;
D = duty cycle factor in %;
CEXT = external timing capacitance in pF.
10.1 Waveforms and test circuit
VI
nB input
GND
VI
VM
tW
nA input
VM
GND
tW
VI
nCD input
GND
VOH
nQ output
VM
tPLH
VM
VOL
tPHL
tPLH
VY
VX
tTHL
tPHL
VM
tPHL
tTLH
VOH
nQ output
VOL
VM
tPLH
VY
VX
001aak194
Measurement points are given in Table 8.
Logic levels: VOL and VOH are typical output levels that occur with the output load.
Figure 7. Waveforms showing propagation delays and transition times
74HCT4538_Q100
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 17 March 2017
© Nexperia B.V. 2017. All rights reserved.
9 / 20
74HCT4538-Q100
Nexperia
Dual retriggerable precision monostable multivibrator
VI
nCD input
VM
GND
tW
trec
tW
VI
nA input
VM
GND
tW
VI
nB input
VM
GND
trtrig
VOH
nQ, nQ output
VM
VOL
tW
001aak195
Measurement points are given in Table 8.
Logic levels: VOL and VOH are typical output levels that occur with the output load.
Figure 8. Waveforms showing nA, nB, nQ, nQ pulse widths, recovery and retrigger times
Table 8. Measurement points
Input
Output
VM
VM
VX
VY
1.3 V
1.3 V
0.1VCC
0.9VCC
74HCT4538_Q100
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 17 March 2017
© Nexperia B.V. 2017. All rights reserved.
10 / 20
74HCT4538-Q100
Nexperia
Dual retriggerable precision monostable multivibrator
VI
negative
pulse
tW
90 %
VM
VM
10 %
0V
tf
tr
VI
positive
pulse
0V
tr
tf
90 %
VM
VM
10 %
tW
VCC
G
VI
DUT
VCC
VO
RT
RL
S1
open
CL
001aad983
Test data is given in Table 9 .
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
Figure 9. Test circuit for measuring switching times
Table 9. Test data
Input
S1 position
Load
VI
tr, tf
CL
RL
tPHL, tPLH
3V
6 ns
15 pF, 50 pF
1 kΩ
open
74HCT4538_Q100
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 17 March 2017
© Nexperia B.V. 2017. All rights reserved.
11 / 20
74HCT4538-Q100
Nexperia
Dual retriggerable precision monostable multivibrator
11 Application information
11.1 Power-down considerations
A large capacitor (CEXT) may cause problems when powering-down the monostable due
to energy stored in this capacitor. When a system containing this device is powereddown or 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,
use a damping diode (DEXT) preferably a germanium or Schottky type diode able to
withstand large current surges and connect as shown in Figure 10
DEXT
CEXT
REXT
GND
nCEXT
VCC
nREXT/CEXT
001aak193
Figure 10. Power-down protection circuit
11.2 Graphs
001aak196
1.6
1 kΩ
2 kΩ
5.6 kΩ
51 kΩ
1 MΩ
normalized
K factor
(K)
1.2
1.12
REXT ×
CEXT
(tW)
0.84
1.0
0.70
0.8
0.56
0.6
10- 10
10- 9
10- 8
10- 7
10- 6
10- 5
CEXT (F)
0.42
10- 4
VCC = 4.5 V; Tamb = 25 °C.
Figure 11. Typical pulse width accuracy versus external capacitance
74HCT4538_Q100
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 17 March 2017
© Nexperia B.V. 2017. All rights reserved.
12 / 20
74HCT4538-Q100
Nexperia
Dual retriggerable precision monostable multivibrator
001aak197
1.6
normalized
K factor
(K)
1.12
REXT ×
CEXT
(tW)
1.2
0.84
1 nF
1.0
0.70
> 100 nF
0.8
0.56
0.6
103
104
105
REXT (Ω)
0.42
106
VCC = 4.5 V; Tamb = 25 °C.
Figure 12. Typical pulse width accuracy versus external resistance
001aak198
1.6
normalized
K factor
(K)
1.12
REXT ×
CEXT
(tW)
1.2
0.84
+10 %
REXT
1.0
0.70
- 10 %
0.8
0.56
0.6
10- 10
10- 9
10- 8
10- 7
10- 6
10- 5
CEXT (F)
0.42
10- 4
VCC = 4.5 V; REXT = 10 kΩ; Tamb = 25 °C.
Figure 13. Typical pulse width accuracy versus external capacitance
001aak199
1.7
normalized
K factor
(K)
2 kΩ
1 kΩ
REXT ×
CEXT
(tW)
5.6 kΩ
1.3
0.91
10 kΩ
1.1
0.77
1 MΩ
0.9
0.7
1.19
1
2
0.63
3
4
5
VCC (V)
6
0.49
CEXT = 1 nF; Tamb = 25 °C.
Figure 14. Typical pulse width accuracy versus power supply
74HCT4538_Q100
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 17 March 2017
© Nexperia B.V. 2017. All rights reserved.
13 / 20
74HCT4538-Q100
Nexperia
Dual retriggerable precision monostable multivibrator
001aak200
1.7
normalized
K factor
(K)
1.3
0.9
0.7
REXT ×
CEXT
(tW)
1 kΩ
0.91
2 kΩ
5.6 kΩ
1 MΩ
1.1
1
1.19
0.77
0.63
2
3
4
5
6
VCC (V)
0.49
CEXT = 100 nF; Tamb = 25 °C.
Figure 15. Typical pulse width accuracy versus power supply
001aak201
1.7
1 kΩ
normalized
K factor
(K)
REXT ×
CEXT
(tW)
2 kΩ
1.3
1.19
0.91
5.6 kΩ
1.1
1 MΩ
0.77
0.9
0.7
- 50
0.63
0
50
100
Tamb (°C)
0.49
150
VCC = 4.5 V; CEXT = 1 nF; Tamb = 25 °C.
Figure 16. Typical pulse width accuracy versus temperature
001aak202
1.7
normalized
K factor
(K)
1.19
REXT ×
CEXT
(tW)
1.3
0.91
1.1
0.77
1 kΩ
2 kΩ
5.6 kΩ
1 MΩ
0.9
0.7
- 50
0
50
100
Tamb (°C)
0.63
0.49
150
VCC = 4.5 V; CEXT = 1 μF; Tamb = 25 °C.
Figure 17. Typical pulse width accuracy versus temperature
74HCT4538_Q100
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 17 March 2017
© Nexperia B.V. 2017. All rights reserved.
14 / 20
74HCT4538-Q100
Nexperia
Dual retriggerable precision monostable multivibrator
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
Figure 18. Package outline SOT109-1 (SO16)
74HCT4538_Q100
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 17 March 2017
© Nexperia B.V. 2017. All rights reserved.
15 / 20
74HCT4538-Q100
Nexperia
Dual retriggerable precision monostable multivibrator
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
Figure 19. Package outline SOT403-1 (TSSOP16)
74HCT4538_Q100
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 17 March 2017
© Nexperia B.V. 2017. All rights reserved.
16 / 20
74HCT4538-Q100
Nexperia
Dual retriggerable precision monostable multivibrator
13 Abbreviations
Table 10. Abbreviations
Acronym
Description
CMOS
Complementary Metal-Oxide Semiconductor
DUT
Device Under Test
ESD
ElectroStatic Discharge
HBM
Human Body Model
MM
Machine Model
TTL
Transistor-Transistor Logic
MIL
Military
14 Revision history
Table 11. Revision history
Document ID
Release date
Data sheet status
Change
notice
Supersedes
74HCT4538-Q100 v.3
20170317
Product data sheet
-
74HC_HCT4538-Q100 v.2
Modifications:
• Type numbers 74HC4538D-Q100 and 74HC4538PW-Q100 removed.
74HC_HCT4538-Q100 v.2 20151223
Modifications:
Product data sheet
-
74HC_HCT4538-Q100 v.1
-
-
• CPD formula corrected (errata).
74HC_HCT4538-Q100 v.1 20120802
74HCT4538_Q100
Product data sheet
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 17 March 2017
© Nexperia B.V. 2017. All rights reserved.
17 / 20
74HCT4538-Q100
Nexperia
Dual retriggerable precision monostable multivibrator
15 Legal information
15.1 Data sheet status
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 URL http://www.nexperia.com.
15.2 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.
15.3 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.
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
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.
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.
Suitability for use in automotive applications — This Nexperia product
has been qualified for use in automotive 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 an 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.
Applications — Applications that are described herein for any of these
products are for illustrative purposes only. Nexperia makes no representation
74HCT4538_Q100
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 17 March 2017
© Nexperia B.V. 2017. All rights reserved.
18 / 20
74HCT4538-Q100
Nexperia
Dual retriggerable precision monostable multivibrator
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.
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.
74HCT4538_Q100
Product data sheet
15.4 Trademarks
Notice: All referenced brands, product names, service names and
trademarks are the property of their respective owners.
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 17 March 2017
© Nexperia B.V. 2017. All rights reserved.
19 / 20
74HCT4538-Q100
Nexperia
Dual retriggerable precision monostable multivibrator
Contents
1
2
3
4
5
5.1
5.2
6
7
8
9
10
10.1
11
11.1
11.2
12
13
14
15
General description ............................................ 1
Features and benefits .........................................1
Ordering information .......................................... 2
Functional diagram ............................................. 2
Pinning information ............................................ 4
Pinning ............................................................... 4
Pin description ................................................... 4
Functional description ........................................5
Limiting values .................................................... 6
Recommended operating conditions ................ 6
Static characteristics .......................................... 7
Dynamic characteristics .....................................8
Waveforms and test circuit ................................ 9
Application information .................................... 12
Power-down considerations .............................12
Graphs ............................................................. 12
Package outline .................................................15
Abbreviations .................................................... 17
Revision history ................................................ 17
Legal information .............................................. 18
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section 'Legal information'.
© 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: 17 March 2017
Document identifier: 74HCT4538_Q100
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Nexperia:
74HCT4538PW-Q100,1 74HC4538D-Q100,118 74HC4538PW-Q100,11 74HCT4538D-Q100,11
工商网监
湘ICP备2023018690号
