INTEGRATED CIRCUITS
DATA SHEET
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•
The IC04 LOCMOS HE4000B Logic
Family Specifications HEF, HEC
•
The IC04 LOCMOS HE4000B Logic
Package Outlines/Information HEF, HEC
HEF4528B
MSI
Dual monostable multivibrator
Product specification
File under Integrated Circuits, IC04
January 1995
Philips Semiconductors
Product specification
Dual monostable multivibrator
DESCRIPTION
The HEF4528B is a dual retriggerable-resettable
monostable multivibrator. Each multivibrator has an active
LOW input (I
0
), and active HIGH input (I
1
), an active LOW
clear direct input (C
D
), an output (O) and its complement
(O), and two pins for connecting the external timing
components (C
TC(1)
, RC
TC
).
An external timing capacitor (C
t
) must be connected
between C
TC
and RC
TC
and an external resistor (R
t
) must
be connected between RC
TC
and V
DD
. The duration of the
(1) Always connected to ground.
HEF4528B
MSI
output pulse is determined by the external timing
components C
t
and R
t
.
A HIGH to LOW transition on I
0
when I
1
is LOW or a LOW
to HIGH transition on I
1
when I
0
is HIGH produces a
positive pulse (LOW-HIGH-LOW) and O and a negative
pulse (HIGH-LOW-HIGH) on O if the C
D
is HIGH. A LOW
Fig.2 Pinning diagram.
HEF4528BP(N):
HEF4528BD(F):
HEF4528BT(D):
16-lead DIL; plastic (SOT38-1)
16-lead DIL; ceramic (cerdip) (SOT74)
16-lead SO; plastic (SOT109-1)
( ): Package Designator North America
PINNING
I
0A,
I
0B
I
1A
, I
1B
C
DA
, C
DB
O
A
, O
B
O
A
, O
B
C
TC A
, C
TC B
RC
TC A
,
RC
TC B
input (HIGH to LOW triggered)
input (LOW to HIGH triggered)
clear direct input (active LOW)
output
complementary output (active LOW)
external capacitor connections
(1)
external capacitor/ resistor connections
Fig.1 Functional diagram.
on C
D
forces O LOW, O HIGH and inhibits any further
pulses until C
D
is HIGH.
FAMILY DATA, I
DD
LIMITS category MSI
See Family Specifications
January 1995
2
Philips Semiconductors
Product specification
Dual monostable multivibrator
FUNCTION TABLE
INPUTS
I
0
H
X
Notes
1. H = HIGH state (the more positive voltage)
2. L = LOW state (the less positive voltage)
3. X = state is immaterial
4.
5.
6.
= positive-going transition
= negative-going transition
= positive or negative output pulse; width is determined by C
t
and R
t
X
I
1
L
C
D
H
H
L
L
H
OUTPUTS
O
O
HEF4528B
MSI
AC CHARACTERISTICS
V
SS
= 0 V; T
amb
= 25
°C;
C
L
= 50 pF; input transition times
≤
20 ns
V
DD
V
Propagation delays
I
0
, I
1
→
O
HIGH to LOW
I
0
, I
1
→
O
LOW to HIGH
C
D
→
O
HIGH to LOW
C
D
→
O
LOW to HIGH
Output transition
times
HIGH to LOW
LOW to HIGH
5
10
15
5
10
15
5
10
15
5
10
15
5
10
15
5
10
15
t
TLH
t
THL
t
PLH
t
PHL
t
PLH
t
PHL
140
50
35
155
60
40
105
40
30
120
50
35
60
30
20
60
30
20
280
100
70
305
115
80
210
85
60
240
105
70
120
60
40
120
60
40
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
113 ns
+
(0,55 ns/pF) C
L
39 ns
+
(0,23 ns/pF) C
L
27 ns
+
(0,16 ns/pF) C
L
128 ns
+
(0,55 ns/pF) C
L
49 ns
+
(0,23 ns/pF) C
L
32 ns
+
(0,16 ns/pF) C
L
78 ns
+
(0,55 ns/pF) C
L
29 ns
+
(0,23 ns/pF) C
L
22 ns
+
(0,16 ns/pF) C
L
93 ns
+
(0,55 ns/pF) C
L
39 ns
+
(0,23 ns/pF) C
L
27 ns
+
(0,16 ns/pF) C
L
10 ns
+
(1,0 ns/pF) C
L
9 ns
+
(0,42 ns/pF) C
L
6 ns
+
(0,28 ns/pF) C
L
10 ns
+
(1,0 ns/pF) C
L
9 ns
+
(0,42 ns/pF) C
L
6 ns
+
(0,28 ns/pF) C
L
SYMBOL
MIN.
TYP.
MAX.
TYPICAL EXTRAPOLATION
FORMULA
January 1995
4
Philips Semiconductors
Product specification
Dual monostable multivibrator
AC CHARACTERISTICS
V
SS
= 0 V; T
amb
= 25
°C;
input transition times
≤
20 ns; R
t
= 5 kΩ; C
t
= 15 pF
V
DD
V
Dynamic power
dissipation per
package (P)
5
10
15
TYPICAL FORMULA FOR P (µW)
4000 f
i
+ ∑
(f
o
C
L
)
×
V
DD2
20 000 f
i
+ ∑
(f
o
C
L
)
×
V
DD2
59 000 f
i
+ ∑
(f
o
C
L
)
×
V
DD2
where
f
i
= input freq. (MHz)
HEF4528B
MSI
f
o
= output freq. (MHz)
C
L
= load capacitance (pF)
∑
(f
o
C
L
) = sum of outputs
V
DD
= supply voltage (V)
AC CHARACTERISTICS
V
SS
= 0 V; T
amb
= 25
°C;
C
L
= 50 pF; input transition times
≤
20 ns; see also waveforms Fig.5.
V
DD
V
Recovery time
for C
D
Minimum I
0
pulse width; LOW
Minimum I
1
pulse width; HIGH
Minimum C
D
pulse width; LOW
Set-up time
C
D
→
I
0
or I
1
Output O pulse
width; HIGH
Output O pulse
width; HIGH
Change in output O
pulse width over
temperature
Change in output O
pulse width over
V
DD
January 1995
5
10
15
5
10
15
5
10
15
5
10
15
5
10
15
5
10
15
5
10
15
5
10
15
5
10
15
∆t
WO
∆t
WO
t
WOH
t
WOH
t
su
t
WCDL
t
WI1H
t
WI0L
t
RCD
SYMBOL
MIN.
0
0
0
50
30
20
50
30
20
60
35
25
0
0
0
−
−
−
−
−
−
−
−
−
−
−
−
5
TYP.
−75
−30
−25
25
15
10
25
15
10
30
15
10
−105
−40
−25
235
155
140
5,45
4,95
4,85
±3
±2
±2
±2
±1
±1
MAX.
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs
µs
µs
%
%
%
%
%
%
V
DD
±
5%
note 3
note 2
note 1
to avoid change
in output
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