HEF4528B
Dual monostable multivibrator
Rev. 7 — 22 November 2011
Product data sheet
1. General description
The HEF4528B is a dual retriggerable-resetable monostable multivibrator. Each
multivibrator has an active LOW input (nA), and active HIGH input (nB), an active LOW
clear direct input (nCD), an output (nQ) and its complement (nQ), and two external timing
component connecting pins (nCEXT, always connected to ground, and nREXT/CEXT).
An external timing capacitor (C
EXT
) must be connected between nCEXT and
nREXT/CEXT and an external resistor (R
EXT
) must be connected between nREXT/CEXT
and V
DD
. The output pulse duration is determined by the external timing components
C
EXT
and R
EXT
. A HIGH-to-LOW transition on nA when nB is LOW or a LOW-to-HIGH
transition on nB when nA is HIGH produces a positive pulse (LOW-HIGH-LOW) on nQ
and a negative pulse (HIGH-LOW-HIGH) on nQ if the nCD is HIGH. A LOW on nCD
forces nQ LOW, nQ HIGH and inhibits any further pulses until nCD is HIGH.
It operates over a recommended V
DD
power supply range of 3 V to 15 V referenced to V
SS
(usually ground). Unused inputs must be connected to V
DD
, V
SS
, or another input.
2. Features and benefits
Fully static operation
5 V, 10 V, and 15 V parametric ratings
Standardized symmetrical output characteristics
Specified from
40 C
to +85
C
Complies with JEDEC standard JESD 13-B
3. Ordering information
Table 1.
Ordering information
All types operate from
40
C to +85
C.
Type number
HEF4528BP
HEF4528BT
Package
Name
DIP16
SO16
Description
plastic dual in-line package; 16 leads (300 mil)
plastic small outline package; 16 leads; body width 3.9 mm
Version
SOT38-4
SOT109-1
NXP Semiconductors
HEF4528B
Dual monostable multivibrator
4. Functional diagram
nCEXT
2
1
1REXT/CEXT
1CEXT
nA
nREXT/
CEXT
1Q
5
4
1A
1B
1Q
6
nB
7
3
1CD
2REXT/CEXT
2CEXT
14
15
2Q
11
12
2A
2B
2Q
10
nCD
9
13
2CD
nQ
001aae727
nQ
001aae729
Fig 1.
Functional diagram
Fig 2.
Logic diagram for one monostable
multivibrator
HEF4528B
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 7 — 22 November 2011
2 of 17
NXP Semiconductors
HEF4528B
Dual monostable multivibrator
5. Pinning information
5.1 Pinning
HEF4528B
1CEXT
1REXT/CEXT
1CD
1B
1A
1Q
1Q
V
SS
1
2
3
4
5
6
7
8
001aae728
16 V
DD
15 2CEXT
14 2REXT/CEXT
13 2CD
12 2B
11 2A
10 2Q
9
2Q
Fig 3.
Pin configuration
5.2 Pin description
Table 2.
Symbol
1CEXT, 2CEXT
1REXT/CEXT, 2REXT/CEXT
1CD, 2CD
1B, 2B
1A, 2A
1Q, 2Q
1Q, 2Q
V
SS
V
DD
Pin description
Pin
1, 15
2, 14
3, 13
4, 12
5, 11
6, 10
7, 9
8
16
Description
external capacitor connection (always connected to ground)
external capacitor/resistor connection
clear direct input (active LOW)
input (LOW-to-HIGH triggered)
input (HIGH-to-LOW triggered)
output
complementary output (active LOW)
ground supply voltage
supply voltage
HEF4528B
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 7 — 22 November 2011
3 of 17
NXP Semiconductors
HEF4528B
Dual monostable multivibrator
6. Functional description
Table 3.
Inputs
A
H
X
[1]
Function table
[1]
Outputs
B
L
X
CD
H
H
L
L
H
Q
Q
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 C
EXT
and R
EXT
;
= one LOW level output pulse, with the pulse width determined by C
EXT
and R
EXT
.
7. Limiting values
Table 4.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to V
SS
= 0 V (ground).
Symbol
V
DD
I
IK
V
I
I
OK
I
I/O
I
DD
T
stg
T
amb
P
tot
Parameter
supply voltage
input clamping current
input voltage
output clamping current
input/output current
supply current
storage temperature
ambient temperature
total power dissipation
T
amb
=
40 C
to +85
C
DIP16 package
SO16 package
P
[1]
[2]
[1]
[2]
Conditions
V
I
<
0.5
V or V
I
> V
DD
+ 0.5 V
V
I
<
0.5
V or V
I
> V
DD
+ 0.5 V
Min
0.5
-
0.5
-
-
-
65
40
-
-
-
Max
+18
10
V
DD
+ 0.5
10
10
50
+150
+85
750
500
100
Unit
V
mA
V
mA
mA
mA
C
C
mW
mW
mW
power dissipation
per output
For DIP16 package: P
tot
derates linearly with 12 mW/K above 70
C.
For SO16 package: P
tot
derates linearly with 8 mW/K above 70
C.
HEF4528B
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 7 — 22 November 2011
4 of 17
NXP Semiconductors
HEF4528B
Dual monostable multivibrator
8. Recommended operating conditions
Table 5.
Symbol
V
DD
V
I
T
amb
t/V
Recommended operating conditions
Parameter
supply voltage
input voltage
ambient temperature
input transition rise and fall rate
in free air
V
DD
= 5 V
V
DD
= 10 V
V
DD
= 15 V
Conditions
Min
3
0
40
-
-
-
Typ
-
-
-
-
-
-
Max
15
V
DD
+85
3.75
0.5
0.08
Unit
V
V
C
s/V
s/V
s/V
9. Static characteristics
Table 6.
Static characteristics
V
SS
= 0 V; V
I
= V
SS
or V
DD
; unless otherwise specified.
Symbol Parameter
V
IH
HIGH-level
input voltage
Conditions
I
O
< 1
A
V
DD
5V
10 V
15 V
V
IL
LOW-level
input voltage
I
O
< 1
A
5V
10 V
15 V
V
OH
HIGH-level output voltage
I
O
< 1
A
5V
10 V
15 V
V
OL
LOW-level output voltage
I
O
< 1
A
5V
10 V
15 V
I
OH
HIGH-level output current
V
O
= 2.5 V
V
O
= 4.6 V
V
O
= 9.5 V
V
O
= 13.5 V
I
OL
LOW-level output current
V
O
= 0.4 V
V
O
= 0.5 V
V
O
= 1.5 V
I
I
I
DD
input leakage current
supply current
all valid input
combinations;
I
O
= 0 A
5V
5V
10 V
15 V
5V
10 V
15 V
15 V
5V
10 V
15 V
-
T
amb
=
40 C
Min
3.5
7.0
11.0
-
-
-
4.95
9.95
14.95
-
-
-
-
-
-
-
0.52
1.3
3.6
-
-
-
-
-
Max
-
-
-
1.5
3.0
4.0
-
-
-
0.05
0.05
0.05
1.7
0.52
1.3
3.6
-
-
-
0.3
20
40
80
-
T
amb
= +25
C
Min
3.5
7.0
11.0
-
-
-
4.95
9.95
14.95
-
-
-
-
-
-
-
0.44
1.1
3.0
-
-
-
-
-
Max
-
-
-
1.5
3.0
4.0
-
-
-
0.05
0.05
0.05
1.4
0.44
1.1
3.0
-
-
-
0.3
20
40
80
7.5
T
amb
= +85
C
Unit
Min
3.5
7.0
11.0
-
-
-
4.95
9.95
14.95
-
-
-
-
-
-
-
0.36
0.9
2.4
-
-
-
-
-
Max
-
-
-
1.5
3.0
4.0
-
-
-
0.05
0.05
0.05
1.1
0.9
2.4
-
-
-
1.0
150
300
600
-
V
V
V
V
V
V
V
V
V
V
V
V
mA
mA
mA
mA
mA
mA
A
A
A
A
pF
0.36
mA
C
I
input capacitance
HEF4528B
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 7 — 22 November 2011
5 of 17
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