PHILIPS HEF4528BN Dual monostable multivibrator Datasheet

INTEGRATED CIRCUITS
DATA SHEET
For a complete data sheet, please also download:
• 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
HEF4528B
MSI
Dual monostable multivibrator
output pulse is determined by the external timing
components Ct and Rt.
DESCRIPTION
The HEF4528B is a dual retriggerable-resettable
monostable multivibrator. Each multivibrator has an active
LOW input (I0), and active HIGH input (I1), an active LOW
clear direct input (CD), an output (O) and its complement
(O), and two pins for connecting the external timing
components (CTC(1), RCTC).
A HIGH to LOW transition on I0 when I1 is LOW or a LOW
to HIGH transition on I1 when I0 is HIGH produces a
positive pulse (LOW-HIGH-LOW) and O and a negative
pulse (HIGH-LOW-HIGH) on O if the CD is HIGH. A LOW
An external timing capacitor (Ct ) must be connected
between CTC and RCTC and an external resistor (Rt) must
be connected between RCTC and VDD. The duration of the
(1) Always connected to ground.
Fig.2 Pinning diagram.
HEF4528BP(N):
16-lead DIL; plastic (SOT38-1)
HEF4528BD(F):
16-lead DIL; ceramic (cerdip) (SOT74)
HEF4528BT(D):
16-lead SO; plastic (SOT109-1)
( ): Package Designator North America
PINNING
I0A, I0B
input (HIGH to LOW triggered)
I1A, I1B
input (LOW to HIGH triggered)
CDA, CDB
clear direct input (active LOW)
OA, OB
output
OA, OB
complementary output (active LOW)
CTC A, CTC B
external capacitor connections (1)
RCTC A,
RCTC B
FAMILY DATA, IDD LIMITS category MSI
Fig.1 Functional diagram.
See Family Specifications
on CD forces O LOW, O HIGH and inhibits any further
pulses until CD is HIGH.
January 1995
external capacitor/ resistor connections
2
Philips Semiconductors
Product specification
HEF4528B
MSI
Dual monostable multivibrator
Fig.3 Logic diagram (one monostable multivibrator).
January 1995
3
Philips Semiconductors
Product specification
HEF4528B
MSI
Dual monostable multivibrator
FUNCTION TABLE
INPUTS
I0
OUTPUTS
I1
CD
L
H
H
O
O
L
H
H
X
X
L
Notes
1. H = HIGH state (the more positive voltage)
2. L = LOW state (the less positive voltage)
3. X = state is immaterial
4.
= positive-going transition
5.
= negative-going transition
= positive or negative output pulse; width is determined by Ct and Rt
6.
AC CHARACTERISTICS
VSS = 0 V; Tamb = 25 °C; CL = 50 pF; input transition times ≤ 20 ns
VDD
V
SYMBOL
MIN.
TYP.
TYPICAL EXTRAPOLATION
FORMULA
MAX.
Propagation delays
I0, I1 → O
HIGH to LOW
140
280
ns
113 ns + (0,55 ns/pF) CL
50
100
ns
39 ns + (0,23 ns/pF) CL
35
70
ns
27 ns + (0,16 ns/pF) CL
155
305
ns
128 ns + (0,55 ns/pF) CL
60
115
ns
49 ns + (0,23 ns/pF) CL
40
80
ns
32 ns + (0,16 ns/pF) CL
105
210
ns
78 ns + (0,55 ns/pF) CL
40
85
ns
29 ns + (0,23 ns/pF) CL
15
30
60
ns
22 ns + (0,16 ns/pF) CL
5
120
240
ns
93 ns + (0,55 ns/pF) CL
5
10
tPHL
15
I0, I1 → O
LOW to HIGH
5
10
tPLH
15
CD → O
HIGH to LOW
CD → O
LOW to HIGH
Output transition
times
HIGH to LOW
LOW to HIGH
5
10
tPHL
50
105
ns
39 ns + (0,23 ns/pF) CL
15
35
70
ns
27 ns + (0,16 ns/pF) CL
5
60
120
ns
10 ns +
10
tPLH
30
60
ns
9 ns + (0,42 ns/pF) CL
15
20
40
ns
6 ns + (0,28 ns/pF) CL
5
60
120
ns
30
60
ns
9 ns + (0,42 ns/pF) CL
20
40
ns
6 ns + (0,28 ns/pF) CL
10
10
tTHL
tTLH
15
January 1995
(1,0 ns/pF) CL
4
10 ns +
(1,0 ns/pF) CL
Philips Semiconductors
Product specification
HEF4528B
MSI
Dual monostable multivibrator
AC CHARACTERISTICS
VSS = 0 V; Tamb = 25 °C; input transition times ≤ 20 ns; Rt = 5 kΩ; Ct = 15 pF
VDD
V
Dynamic power
TYPICAL FORMULA FOR P (µW)
4000 fi + ∑ (foCL) × VDD2
5
dissipation per
10
20 000 fi + ∑ (foCL) × VDD
package (P)
15
59 000 fi + ∑ (foCL) × VDD2
2
where
fi = input freq. (MHz)
fo = output freq. (MHz)
CL = load capacitance (pF)
∑ (foCL) = sum of outputs
VDD = supply voltage (V)
AC CHARACTERISTICS
VSS = 0 V; Tamb = 25 °C; CL = 50 pF; input transition times ≤ 20 ns; see also waveforms Fig.5.
VDD
V
Recovery time
for CD
Minimum I0
pulse width; LOW
Minimum I1
pulse width; HIGH
Minimum CD
pulse width; LOW
SYMBOL
MIN.
TYP.
0
−75
ns
0
−30
ns
15
0
−25
ns
5
50
25
ns
30
15
ns
15
20
10
ns
5
50
25
ns
30
15
ns
15
20
10
ns
5
60
30
ns
35
15
ns
25
10
ns
5
10
10
10
10
tRCD
tWI0L
tWI1H
tWCDL
15
Set-up time
CD → I0 or I1
5
10
tsu
15
Output O pulse
width; HIGH
5
10
tWOH
15
Output O pulse
width; HIGH
5
10
tWOH
15
Change in output O
5
pulse width over
10
temperature
15
Change in output O
5
pulse width over
10
VDD
15
January 1995
∆tWO
∆tWO
MAX.
0
−105
ns
0
−40
ns
0
−25
ns
−
235
ns
−
155
ns
−
140
ns
−
5,45
µs
−
4,95
µs
−
4,85
µs
−
±3
%
−
±2
%
−
±2
%
−
±2
%
−
±1
%
−
±1
%
5
to avoid change
in output
note 1
note 2
note 3
VDD ± 5%
Philips Semiconductors
Product specification
HEF4528B
MSI
Dual monostable multivibrator
VDD
V
External timing
resistor
SYMBOL
5
10
Rt
15
External timing
5
capacitor
10
MIN.
TYP.
MAX.
5
−
2000
kΩ
5
−
2000
kΩ
5
−
2000
kΩ
no limits
Ct
no limits
15
no limits
Notes
1. Rt = 5 kΩ; Ct = 15 pF; for other Rt, Ct combinations and Ct < 0,01 µF see graph Fig.4.
2. Rt = 10 kΩ; Ct = 1000 pF; for other Rt, Ct combinations and Ct > 0,01 µF use formula tWO = K.Rt.Ct.
where: tWO = output pulse width (s)
Rt = external timing resistor (Ω)
Ct = external timing capacitor (F)
K = 0,42 for VDD = 5 V
K = 0,32 for VDD = 10 V
K = 0,30 for VDD = 15 V
3. Tamb = −40 to +85 °C; ∆tWO is referenced to tWO at Tamb = 25 °C.
January 1995
6
Philips Semiconductors
Product specification
HEF4528B
MSI
Dual monostable multivibrator
Fig.4 Output pulse width (tWO) as a function of external timing capacitor (Ct).
January 1995
7
Philips Semiconductors
Product specification
HEF4528B
MSI
Dual monostable multivibrator
Fig.5
Waveforms showing minimum I0, I1 and O pulse widths, set-up and recovery times. Set-up and recovery
times are shown as positive values but may be specified as negative values.
APPLICATION INFORMATION
An example of an application for the HEF4528B is:
• Non-retriggerable monostable multivibrator
Fig.6
Two examples for a non-retriggerable monostable multivibrator using half of HEF4528B (LOW to HIGH
and HIGH to LOW triggered).
January 1995
8
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