Dual precision monostable multivibrator

HEF4538B
Dual precision monostable multivibrator
Rev. 10 — 1 April 2016
Product data sheet
1. General description
The HEF4538B is a dual retriggerable-resettable monostable multivibrator. Each
multivibrator has an active LOW trigger/retrigger input (nA), an active HIGH
trigger/retrigger input (nB), an overriding active LOW direct reset input (nCD), an output
(nQ) and its complement (nQ), and two pins (nREXT/CEXT, and nCEXT, always
connected to ground) for connecting the external timing components CEXT and REXT.
Typical pulse width variation over the specified temperature range is 0.2 %.
The multivibrator may be triggered by either the positive or the negative edges of the input
pulse and will produce an accurate output pulse with a pulse width range of 10 s to
infinity. 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 REXT  CEXT.
The linear design techniques in LOCMOS (Local Oxide CMOS) guarantee precise control
of the output pulse width. A LOW level at nCD terminates the output pulse immediately.
The trigger inputs’ Schmitt trigger action makes the circuit highly tolerant of slower rise
and fall times.
It operates over a recommended VDD power supply range of 3 V to 15 V referenced to VSS
(usually ground). Unused inputs must be connected to VDD, VSS, or another input.
2. Features and benefits






Tolerant of slow trigger rise and fall times
Fully static operation
5 V, 10 V, and 15 V parametric ratings
Standardized symmetrical output characteristics
Specified from 40 C to +85 C and 40 C to +125 C
Complies with JEDEC standard JESD 13-B
3. Ordering information
Table 1.
Ordering information
All types operate from 40 C to +125 C.
Type number
HEF4538BT
Package
Name
Description
Version
SO16
plastic small outline package; 16 leads; body width 3.9 mm
SOT109-1
HEF4538B
NXP Semiconductors
Dual precision monostable multivibrator
4. Functional diagram
5(;7&(;7
&(;7
$
%
4
4
4
&'
5(;7&(;7
&(;7
$
%
4
&'
DDH
Fig 1.
Functional diagram
HEF4538B
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 10 — 1 April 2016
© NXP Semiconductors N.V. 2016. All rights reserved.
2 of 17
HEF4538B
NXP Semiconductors
Dual precision monostable multivibrator
Q%
Q$
9''
Q5(;7&(;7
9UHI
HQDEOH
Q&(;7
Q4
966
Q&'
Q4
9UHI
HQDEOH
DDH
Fig 2.
Logic diagram (one multivibrator)
5. Pinning information
5.1 Pinning
+()%
&(;7 9''
5(;7&(;7 &(;7
&'
5(;7&(;7
%
&'
$ %
4
$
4
4
966
4
DDH
Fig 3.
Pin configuration
HEF4538B
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 10 — 1 April 2016
© NXP Semiconductors N.V. 2016. All rights reserved.
3 of 17
HEF4538B
NXP Semiconductors
Dual precision monostable multivibrator
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)
VSS
8
ground supply voltage
VDD
16
supply voltage
6. Functional description
Table 3.
Function table
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 pulse width determined by CEXT and REXT;
= one LOW level output pulse, with the pulse width determined by CEXT and REXT.
HEF4538B
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 10 — 1 April 2016
© NXP Semiconductors N.V. 2016. All rights reserved.
4 of 17
HEF4538B
NXP Semiconductors
Dual precision monostable multivibrator
Q%LQSXW
Q$LQSXW
Q&'LQSXW
Q5(;7&(;7LQSXW
9UHI
9UHI
9UHI
9UHI
Q4RXWSXW
7
7
7
DDH
(1) Positive edge triggering.
(2) Positive edge re-triggering (pulse lengthening).
(3) Negative edge triggering.
(4) Reset (pulse shortening).
(5) T = REXT  CEXT.
Fig 4.
Timing diagram
&(;7
5(;7
9''
Q5(;7&(;7
Q&(;7
7
Q4
7 5(;7î&(;7
Q$
Q%
Q4
Q&'
Fig 5.
DDH
Connection of the external timing components REXT and CEXT
7. Limiting values
Table 4.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to VSS = 0 V (ground)
Symbol
Parameter
VDD
supply voltage
IIK
input clamping current
VI
input voltage
IOK
output clamping current
Conditions
VI < 0.5 V or VI > VDD + 0.5 V
VI < 0.5 V or VI > VDD + 0.5 V
Min
Max
Unit
0.5
+18
V
-
10
mA
0.5
VDD + 0.5
-
10
V
mA
II/O
input/output current
-
10
mA
IDD
supply current
-
50
mA
Tstg
storage temperature
HEF4538B
Product data sheet
65
All information provided in this document is subject to legal disclaimers.
Rev. 10 — 1 April 2016
+150
C
© NXP Semiconductors N.V. 2016. All rights reserved.
5 of 17
HEF4538B
NXP Semiconductors
Dual precision monostable multivibrator
Table 4.
Limiting values …continued
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to VSS = 0 V (ground)
Symbol
Parameter
Tamb
ambient temperature
Ptot
total power dissipation
Conditions
[1]
Max
Unit
40
+125
C
-
500
mW
-
100
mW
Tamb = 40 C to +125 C
[1]
SO16 package
P
Min
power dissipation
per output
For SO16 package: Ptot derates linearly with 8 mW/K above 70 C.
8. Recommended operating conditions
Table 5.
Recommended operating conditions
Symbol
Parameter
VDD
VI
Conditions
Min
Typ
Max
Unit
supply voltage
3
-
15
V
input voltage
0
-
VDD
V
Tamb
ambient temperature
in free air
40
-
+125
C
t/V
input transition rise and fall rate
VDD = 5 V
-
-
3.75
s/V
VDD = 10 V
-
-
0.5
s/V
VDD = 15 V
-
-
0.08
s/V
9. Static characteristics
Table 6.
Static characteristics
VSS = 0 V; VI = VSS or VDD unless otherwise specified.
Symbol Parameter
VIH
VIL
VOH
VOL
IOH
Conditions
HIGH-level
input voltage
IO < 1 A
LOW-level
input voltage
IO < 1 A
HIGH-level
output voltage
LOW-level
output voltage
HIGH-level
output current
HEF4538B
Product data sheet
VDD
Tamb = 40 C
Tamb = 25 C
Tamb = 85 C Tamb = 125 C Unit
Min
Max
Min
Max
Min
Max
Min
Max
5V
3.5
-
3.5
-
3.5
-
3.5
-
V
10 V
7.0
-
7.0
-
7.0
-
7.0
-
V
15 V
11.0
-
11.0
-
11.0
-
11.0
-
V
5V
-
1.5
-
1.5
-
1.5
-
1.5
V
10 V
-
3.0
-
3.0
-
3.0
-
3.0
V
15 V
-
4.0
-
4.0
-
4.0
-
4.0
V
5V
4.95
-
4.95
-
4.95
-
4.95
-
V
10 V
9.95
-
9.95
-
9.95
-
9.95
-
V
15 V
14.95
-
14.95
-
14.95
-
14.95
-
V
5V
-
0.05
-
0.05
-
0.05
-
0.05
V
10 V
-
0.05
-
0.05
-
0.05
-
0.05
V
15 V
-
0.05
-
0.05
-
0.05
-
0.05
V
VO = 2.5 V
5V
-
1.7
-
1.4
-
1.1
-
1.1
mA
VO = 4.6 V
5V
-
0.64
-
0.5
-
0.36
-
0.36 mA
IO < 1 A
IO < 1 A
VO = 9.5 V
10 V
-
1.6
-
1.3
-
0.9
-
0.9
mA
VO = 13.5 V
15 V
-
4.2
-
3.4
-
2.4
-
2.4
mA
All information provided in this document is subject to legal disclaimers.
Rev. 10 — 1 April 2016
© NXP Semiconductors N.V. 2016. All rights reserved.
6 of 17
HEF4538B
NXP Semiconductors
Dual precision monostable multivibrator
Table 6.
Static characteristics …continued
VSS = 0 V; VI = VSS or VDD unless otherwise specified.
Symbol Parameter
IOL
LOW-level
output current
input leakage
current
II
Conditions
Tamb = 25 C
Tamb = 85 C Tamb = 125 C Unit
Min
Max
Min
Max
Min
Max
Min
Max
VO = 0.4 V
5V
0.64
-
0.5
-
0.36
-
0.36
-
mA
VO = 0.5 V
10 V
1.6
-
1.3
-
0.9
-
0.9
-
mA
VO = 1.5 V
15 V
4.2
-
3.4
-
2.4
-
2.4
-
mA
nA, nB
15 V
-
0.1
-
0.1
-
1.0
-
1.0
A
nREXT/CEXT
15 V
-
0.3
-
0.1
-
1.0
-
1.0
A
-
-
-
-
7.5
-
-
-
-
input
capacitance
CI
Tamb = 40 C
VDD
pF
Table 7.
Typical static characteristics
VSS = 0 V; VI = VSS or VDD; Tamb = +25 C.
Symbol
Parameter
Conditions
VDD
IDD
supply current
active state
5V
input capacitance
CI
[1]
nREXT/CEXT
Typ
Unit
55
A
10 V
150
A
15 V
220
A
-
15
pF
[1]
Only one monostable is switching: for the specified current during the output pulse (output nQ is HIGH).
10. Dynamic characteristics
Table 8.
Dynamic characteristics
VSS = 0 V; Tamb = 25 C; for test circuit see Figure 11.
Symbol Parameter
tPHL
tPLH
HIGH to LOW
propagation
delay
LOW to HIGH
propagation
delay
Conditions
VDD
Extrapolation formula[1]
Min
Typ
Max
Unit
nA, nB to nQ;
see Figure 6
5V
193 ns + (0.55 ns/pF) CL
-
220
440
ns
10 V
74 ns + (0.23 ns/pF) CL
-
85
190
ns
15 V
52 ns + (0.16 ns/pF) CL
-
60
120
ns
nCD to nQ; see Figure 6
5V
98 ns + (0.55 ns/pF) CL
-
125
250
ns
10 V
44 ns + (0.23 ns/pF) CL
-
55
110
ns
15 V
32 ns + (0.16 ns/pF) CL
-
40
80
ns
5V
173 ns + (0.55 ns/pF) CL
-
200
460
ns
10 V
79 ns + (0.23 ns/pF) CL
-
90
180
ns
15 V
52 ns + (0.16 ns/pF) CL
-
60
120
ns
5V
98 ns + (0.55 ns/pF) CL
-
125
250
ns
10 V
44 ns + (0.23 ns/pF) CL
-
55
110
ns
15 V
32 ns + (0.16 ns/pF) CL
-
40
80
ns
5V
10 ns + (1.00 ns/pF) CL
-
60
120
ns
10 V
9 ns + (0.42 ns/pF) CL
-
30
60
ns
15 V
6 ns + (0.28 ns/pF) CL
-
nA, nB to nQ;
see Figure 6
nCD to nQ; see Figure 6
tt
trec
transition time
recovery time
HEF4538B
Product data sheet
see Figure 6
nCD to nA, nB;
see Figure 7
40
ns
5V
-
20
40
ns
10 V
-
10
20
ns
15 V
-
5
10
ns
All information provided in this document is subject to legal disclaimers.
Rev. 10 — 1 April 2016
20
© NXP Semiconductors N.V. 2016. All rights reserved.
7 of 17
HEF4538B
NXP Semiconductors
Dual precision monostable multivibrator
Table 8.
Dynamic characteristics …continued
VSS = 0 V; Tamb = 25 C; for test circuit see Figure 11.
Symbol Parameter
Conditions
VDD
trtrig
nQ, nQ to nA, nB;
see Figure 7
retrigger time
pulse width
tW
tW
pulse width
variation
Extrapolation formula[1]
Min
Typ
Max
Unit
5V
0
-
-
ns
10 V
0
-
-
ns
15 V
0
-
-
ns
nA LOW; minimum width; 5 V
see Figure 7
10 V
90
45
-
ns
30
15
-
ns
15 V
24
12
-
ns
nB HIGH;
minimum width;
see Figure 7
5V
50
25
-
ns
10 V
24
12
-
ns
15 V
20
10
-
ns
nCD LOW;
minimum width;
see Figure 7
5V
55
25
-
ns
10 V
25
12
-
ns
15 V
20
10
-
ns
nQ or nQ;
REXT = 100 k;
CEXT =2.0 nF;
see Figure 7
5V
218
230
242
s
10 V
213
224
235
s
15 V
211
223
234
s
nQ or nQ ;
REXT = 100 k;
CEXT = 0.1 F;
see Figure 7
5V
10.3
10.8
11.3
ms
10 V
10.2
10.7
11.2
ms
15 V
10.1
10.6
11.1
ms
nQ or nQ;
REXT = 100 k;
CEXT = 10 F;
see Figure 7
5V
1.01
1.09
1.11
s
10 V
0.99
1.04
1.09
s
15 V
0.99
1.04
1.09
s
nQ or nQ variation over
temperature range;
see Figure 8
5V
-
0.2
-
%
10 V
-
0.2
-
%
15 V
-
0.2
-
%
-
1.5
-
%
5V
-
1
-
%
10 V
-
1
-
%
15 V
-
1
-
%
nQ or nQ variation over
VDD voltage range
5 V to 15 V; see Figure 9
nQ or nQ variation
between monostables in
the same device;
REXT = 100 k;
CEXT = 2 nF to 10 F
REXT
external timing
resistor
5
-
[2]
k
CEXT
external timing
capacitor
2000
-
no
limits
pF
[1]
The typical values of the propagation delay and transition times are calculated from the extrapolation formulas shown (CL in pF).
[2]
The maximum permissible resistance REXT, which holds the specified accuracy of tW (nQ, nQ output), depends on the leakage current
of the capacitor CEXT and the leakage of the HEF4538B.
HEF4538B
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 10 — 1 April 2016
© NXP Semiconductors N.V. 2016. All rights reserved.
8 of 17
HEF4538B
NXP Semiconductors
Dual precision monostable multivibrator
11. Waveforms
WU
9,
WI
90
Q%LQSXW
9
W:
WI
9,
WU
Q$LQSXW
9
90
W:
9,
90
Q&'LQSXW
9
W3/+
92+
Q4RXWSXW
90
92/
W3/+
90
90
W7+/
W7/+
W3+/
W3+/
92+
Q4RXWSXW
W3+/
W3/+
90
92/
90
W7+/
W7/+
DDH
Measurement points are given in Table 9.
Logic levels: VOL and VOH are typical output levels that occur with the output load.
Fig 6.
Waveforms showing propagation delays
Table 9.
Measurement points
Supply voltage
Input
Output
VDD
VM
VM
5 V to 15 V
0.5VDD
0.5VDD
HEF4538B
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 10 — 1 April 2016
© NXP Semiconductors N.V. 2016. All rights reserved.
9 of 17
HEF4538B
NXP Semiconductors
Dual precision monostable multivibrator
9,
Q&'LQSXW
90
9
W:
WUHF
W:
9,
Q$LQSXW
9
W:
9,
Q%LQSXW
9
WUHWULJ
92+
Q4RXWSXW
90
92/
W:
DDM
Measurement points are given in Table 9.
Set-up and recovery times are shown as positive values but may be specified as negative values.
Logic levels: VOL and VOH are typical output levels that occur with the output load.
Fig 7.
Waveforms showing minimum nA, nB, and nQ pulse widths and set-up, recovery and retrigger times
HEF4538B
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 10 — 1 April 2016
© NXP Semiconductors N.V. 2016. All rights reserved.
10 of 17
HEF4538B
NXP Semiconductors
Dual precision monostable multivibrator
DDH
DDH
W:
W:
7DPEƒ&
a. REXT = 100 k; CEXT = 100 nF
7DPEƒ&
b. REXT = 100 k; CEXT = 2 nF
(1) VDD = 5 V.
(2) VDD = 10 V.
(3) VDD = 15 V.
tW = 0 % at VDD = 10 V and Tamb = 25 C
Fig 8.
Typical normalized change in output pulse width as a function of ambient temperature
DDH
ǻW:
DDH
,''
—$
9''9
į
Tamb = 25 C; tW = 0 % at VDD = 10 V; REXT = 100 k
(1) CEXT = 2 nF.
REXT = 100 k; CEXT = 100 nF; CL = 50 pF;
one monostable multivibrator switching only
(1) VDD = 15 V.
(2) CEXT = 100 nF.
(2) VDD = 10 V.
(3) VDD = 5 V.
Fig 9.
Typical normalized change in output pulse
width as a function of the supply voltage
HEF4538B
Product data sheet
Fig 10. Total supply current as a function of the
output duty factor
All information provided in this document is subject to legal disclaimers.
Rev. 10 — 1 April 2016
© NXP Semiconductors N.V. 2016. All rights reserved.
11 of 17
HEF4538B
NXP Semiconductors
Dual precision monostable multivibrator
9''
*
9,
92
'87
&/
57
DDJ
Test data is given in Table 10.
Definitions for test circuit:
CL = load capacitance including jig and probe capacitance.
RT = termination resistance should be equal to the output impedance Zo of the pulse generator.
Fig 11. Test circuit for measuring switching times
Table 10.
Test data
Supply voltage
Input
VDD
VI
tr, tf
CL
5 V to 15 V
VSS or VDD
 20 ns
50 pF
HEF4538B
Product data sheet
Load
All information provided in this document is subject to legal disclaimers.
Rev. 10 — 1 April 2016
© NXP Semiconductors N.V. 2016. All rights reserved.
12 of 17
HEF4538B
NXP Semiconductors
Dual precision monostable multivibrator
12. Package outline
62SODVWLFVPDOORXWOLQHSDFNDJHOHDGVERG\ZLGWKPP
627
'
(
$
;
F
\
+(
Y 0 $
=
4
$
$
$
$
SLQLQGH[
ș
/S
/
H
Z 0
ES
GHWDLO;
PP
VFDOH
',0(16,216LQFKGLPHQVLRQVDUHGHULYHGIURPWKHRULJLQDOPPGLPHQVLRQV
81,7
$
PD[
$
$
$
ES
F
'
(
H
+(
/
/S
4
Y
Z
\
=
PP
LQFKHV ș
R
R
1RWH
3ODVWLFRUPHWDOSURWUXVLRQVRIPPLQFKPD[LPXPSHUVLGHDUHQRWLQFOXGHG
5()(5(1&(6
287/,1(
9(56,21
,(&
-('(&
627
(
06
-(,7$
(8523($1
352-(&7,21
,668('$7(
Fig 12. Package outline SOT109-1 (SO16)
HEF4538B
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 10 — 1 April 2016
© NXP Semiconductors N.V. 2016. All rights reserved.
13 of 17
HEF4538B
NXP Semiconductors
Dual precision monostable multivibrator
13. Abbreviations
Table 11.
Abbreviations
Acronym
Description
DUT
Device Under Test
14. Revision history
Table 12.
Revision history
Document ID
Release date
Data sheet status
Change notice
Supersedes
HEF4538B v.10
20160401
Product data sheet
-
HEF4538B v.9
Modifications:
HEF4538B v.9
Modifications:
•
Type number HEF4538BP (SOT38-4) removed.
20131210
•
Product data sheet
-
HEF4538B v.8
Figure 8 and Figure 9 updated to show output pulse width over full temperature range.
HEF4538B v.8
20111116
Product data sheet
-
HEF4538B v.7
HEF4538B v.7
20110217
Product data sheet
-
HEF4538B v.6
HEF4538B v.6
20091102
Product data sheet
-
HEF4538B v.5
HEF4538B v.5
20090304
Product data sheet
-
HEF4538B v.4
HEF4538B v.4
20090206
Product data sheet
-
HEF4538B_CNV v.3
HEF4538B_CNV v.3
19950101
Product specification
-
HEF4538B_CNV v.2
HEF4538B_CNV v.2
19950101
Product specification
-
-
HEF4538B
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 10 — 1 April 2016
© NXP Semiconductors N.V. 2016. All rights reserved.
14 of 17
HEF4538B
NXP Semiconductors
Dual 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]
Please consult the most recently issued document before initiating or completing a design.
[2]
The term ‘short data sheet’ is explained in section “Definitions”.
[3]
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.nxp.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. NXP Semiconductors 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 NXP Semiconductors 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
NXP Semiconductors and its customer, unless NXP Semiconductors and
customer have explicitly agreed otherwise in writing. In no event however,
shall an agreement be valid in which the NXP Semiconductors 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, NXP Semiconductors 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. NXP Semiconductors takes no
responsibility for the content in this document if provided by an information
source outside of NXP Semiconductors.
In no event shall NXP Semiconductors 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, NXP Semiconductors’ 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 NXP Semiconductors.
Right to make changes — NXP Semiconductors 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.
HEF4538B
Product data sheet
Suitability for use — NXP Semiconductors 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 NXP Semiconductors product can reasonably be expected
to result in personal injury, death or severe property or environmental
damage. NXP Semiconductors and its suppliers accept no liability for
inclusion and/or use of NXP Semiconductors 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. NXP Semiconductors 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 NXP Semiconductors products, and NXP Semiconductors
accepts no liability for any assistance with applications or customer product
design. It is customer’s sole responsibility to determine whether the NXP
Semiconductors 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.
NXP Semiconductors 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 NXP
Semiconductors 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). NXP 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 — NXP Semiconductors
products are sold subject to the general terms and conditions of commercial
sale, as published at http://www.nxp.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. NXP Semiconductors hereby expressly objects to
applying the customer’s general terms and conditions with regard to the
purchase of NXP Semiconductors 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.
All information provided in this document is subject to legal disclaimers.
Rev. 10 — 1 April 2016
© NXP Semiconductors N.V. 2016. All rights reserved.
15 of 17
HEF4538B
NXP Semiconductors
Dual 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.
Non-automotive qualified products — Unless this data sheet expressly
states that this specific NXP Semiconductors 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. NXP
Semiconductors 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 NXP Semiconductors’ warranty of the
product for such automotive applications, use and specifications, and (b)
whenever customer uses the product for automotive applications beyond
NXP Semiconductors’ specifications such use shall be solely at customer’s
own risk, and (c) customer fully indemnifies NXP Semiconductors for any
liability, damages or failed product claims resulting from customer design and
use of the product for automotive applications beyond NXP Semiconductors’
standard warranty and NXP Semiconductors’ product specifications.
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.
15.4 Trademarks
Notice: All referenced brands, product names, service names and trademarks
are the property of their respective owners.
16. Contact information
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: salesaddresses@nxp.com
HEF4538B
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 10 — 1 April 2016
© NXP Semiconductors N.V. 2016. All rights reserved.
16 of 17
HEF4538B
NXP Semiconductors
Dual precision monostable multivibrator
17. Contents
1
2
3
4
5
5.1
5.2
6
7
8
9
10
11
12
13
14
15
15.1
15.2
15.3
15.4
16
17
General description . . . . . . . . . . . . . . . . . . . . . . 1
Features and benefits . . . . . . . . . . . . . . . . . . . . 1
Ordering information . . . . . . . . . . . . . . . . . . . . . 1
Functional diagram . . . . . . . . . . . . . . . . . . . . . . 2
Pinning information . . . . . . . . . . . . . . . . . . . . . . 3
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4
Functional description . . . . . . . . . . . . . . . . . . . 4
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 5
Recommended operating conditions. . . . . . . . 6
Static characteristics. . . . . . . . . . . . . . . . . . . . . 6
Dynamic characteristics . . . . . . . . . . . . . . . . . . 7
Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 13
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Revision history . . . . . . . . . . . . . . . . . . . . . . . . 14
Legal information. . . . . . . . . . . . . . . . . . . . . . . 15
Data sheet status . . . . . . . . . . . . . . . . . . . . . . 15
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Contact information. . . . . . . . . . . . . . . . . . . . . 16
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
© NXP Semiconductors N.V. 2016.
All rights reserved.
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: salesaddresses@nxp.com
Date of release: 1 April 2016
Document identifier: HEF4538B