1/10
September 2001
s
RETRIGGERABLE/RESETTABLE
CAPABILITY
s
TRIGGER AND RESET PROPAGATION
DELAYS INDEPENDENT OF R
X
, C
X
s
TRIGGERING FROM LEADING OR
TRAILING EDGE
s
Q AND Q BUFFERED OUTPUT AVAILABLE
s
SEPARATE RESETS
s
WIDE RANGE OF OUTPUT PULSE WIDTHS
s
QUIESCENT CURRENT SPECIFIED UP TO
20V
s
5V, 10V AND 15V PARAMETRIC RATINGS
s
INPUT LEAKAGE CURRENT
I
I
= 100nA (MAX) AT V
DD
= 18V T
A
= 25C
s
100% TESTED FOR QUIESCENT CURRENT
s
MEETS ALL REQUIREMENTS OF JEDEC
JESD13B " STANDARD SPECIFICATIONS
FOR DESCRIPTION OF B SERIES CMOS
DEVICES"
DESCRIPTION
The HCF4098B is a monolithic integrated circuit
fabricated in Metal Oxide Semiconductor
technology available in DIP and SOP packages.
The HCF4098B dual precision monostable
multivibrator provides stable retriggerable/
resettable one-shot operation for any fixed voltage
timing application. An external resistor (R
X
) and
an external capacitor (C
X
) control the timing for
the circuit. Adjustment of R
X
and C
X
provides a
wide range of output pulse widths from the Q and
Q terminals. The time delay from trigger input to
output transition (trigger propagation delay) and
the time delay from reset input to output transition
(reset propagation delay) and the time delay from
reset input to output transition (reset propagation
delay) are independent of R
X
and C
X
. Leading
edge triggering (+TR) and trailing edge triggering
(-TR) inputs are provided for triggering from either
edge of an input pulse. An unused +TR input
should be tied to V
SS
. An unused -TR input should
be tied to V
DD
. A RESET (on low level) is provided
for immediate termination of the output pulse or to
prevent output pulses when power is turned on.
HCF4098B
DUAL MONOSTABLE MULTIVIBRATOR
PIN CONNECTION
ORDER CODES
PACKAGE
TUBE
T & R
DIP
HCF4098BEY
SOP
HCF4098BM1
HCF4098M013TR
DIP
SOP
HCF4098B
2/10
An unused RESET input should be tied to V
DD
.
However, if an entire section of the HCF4098B is
not used, its reset should be tied to V
SS
(see table
1). In normal operation the circuit triggers (extends
the output pulse one period) on the application of
each new trigger pulse. For operation in the
non-retiggerable mode, Q is connected to -TR
when leading edge triggering (+TR) is used or Q is
connected to +TR when trailing edge triggering
(-TR) is used. The time period (T) for this
multivibrator can be calculated by : T = 1/2 R
X
C
X
for C
X
> 0.01
F. The min. value of external
resistance, R
X
, is 5K
.
The max. values of
external capacitance, C
X
, is 100
F. The output
pulse width has variations of
2.5% typically, over
the temperature range of -55
C to 125
C for
C
X
=1000pF and R
X
= 100K
. For power supply
variation of
5% typically , for V
DD
= 10V and 15V
and
1% typically for V
DD
= 5V at C
X
= 1000pF
and R
X
= 5K
.
IINPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
FUNCTIONAL DIAGRAM
PIN No
SYMBOL
NAME AND FUNCTION
4, 12
+TR
Leading Trigger Inputs
5, 11
-TR
Trailing Trigger Inputs
3, 13
RESET
Reset Inputs
1, 15
C
X
1, C
X
2
External Capacitors
2, 14
R
X
C
X
1
R
X
C
X
2
External resistors to Vdd
6, 7
Q1, Q1
Ouputs Mono 1
10, 9
Q2, Q2
Outputs Mono 2
8
V
SS
Negative Supply Voltage
16
V
DD
Positive Supply Voltage
HCF4098B
3/10
TABLE 1 : Functional Terminal Connections
A Retriggerable one-shot multivibrator has an output pulse width which is extended on full time period (T) after application of the last trigger
pulse.
A Non-Retriggerable one-shot multivibrator has a time period (T) referenced from the application of the firs trigger pulse.
LOGIC DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied.
All voltage values are referred to V
SS
pin voltage.
FUNCTION
V
DD
to Term. N
V
SS
to Term. N
Input Pulse to
Term. N
Other Connections
Mono (1) Mono (2) Mono (1) Mono (2) Mono (1) Mono (2) Mono (1) Mono (2)
Leading Edge Trigger/
Retriggerable
3, 5
11, 13
4
12
Leading Edge Trigger/Non
Retriggerable
3
13
4
12
5, 7
11, 9
Trailing Edge Trigger/
Retriggerable
3
13
4
12
5
11
Trailing Edge Trigger/Non
Retriggerable
3
13
5
11
4, 6
12, 10
Unused Section
5
11
3, 4
12, 13
Symbol
Parameter
Value
Unit
V
DD
Supply Voltage
-0.5 to +22
V
V
I
DC Input Voltage
-0.5 to V
DD
+ 0.5
V
I
I
DC Input Current
10
mA
P
D
Power Dissipation per Package
200
mW
Power Dissipation per Output Transistor
100
mW
T
op
Operating Temperature
-55 to +125
C
T
stg
Storage Temperature
-65 to +150
C
HCF4098B
4/10
RECOMMENDED OPERATING CONDITIONS
DC SPECIFICATIONS
The Noise Margin for both "1" and "0" level is: 1V min. with V
DD
=5V, 2V min. with V
DD
=10V, 2.5V min. with V
DD
=15V
Symbol
Parameter
Value
Unit
V
DD
Supply Voltage
3 to 20
V
V
I
Input Voltage
0 to V
DD
V
T
op
Operating Temperature
-55 to 125
C
Symbol
Parameter
Test Condition
Value
Unit
V
I
(V)
V
O
(V)
|I
O
|
(
A)
V
DD
(V)
T
A
= 25C
-40 to 85C
-55 to 125C
Min.
Typ.
Max.
Min.
Max.
Min.
Max.
I
L
Quiescent Current
0/5
5
0.02
1
30
30
A
0/10
10
0.02
2
60
60
0/15
15
0.02
4
120
120
0/20
20
0.04
20
600
600
V
OH
High Level Output
Voltage
0/5
<1
5
4.95
4.95
4.95
V
0/10
<1
10
9.95
9.95
9.95
0/15
<1
15
14.95
14.95
14.95
V
OL
Low Level Output
Voltage
5/0
<1
5
0.05
0.05
0.05
V
10/0
<1
10
0.05
0.05
0.05
15/0
<1
15
0.05
0.05
0.05
V
IH
High Level Input
Voltage
0.5/4.5
<1
5
3.5
3.5
3.5
V
1/9
<1
10
7
7
7
1.5/13.5
<1
15
11
11
11
V
IL
Low Level Input
Voltage
4.5/0.5
<1
5
1.5
1.5
1.5
V
9/1
<1
10
3
3
3
13.5/1.5
<1
15
4
4
4
I
OH
Output Drive
Current
0/5
2.5
<1
5
-1.6
-3.2
-1.3
-1.3
mA
0/5
4.6
<1
5
-0.51
-1
-0.42
-0.42
0/10
9.5
<1
10
-1.3
-2.6
-1.1
-1.1
0/15
13.5
<1
15
-3.4
-6.8
-2.8
-2.8
I
OL
Output Sink
Current
0/5
0.4
<1
5
-0.51
1
-0.42
-0.42
mA
0/10
0.5
<1
10
-1.3
2.6
-1.1
-1.1
0/15
1.5
<1
15
-3.4
6.8
-2.8
-2.8
I
I
Input Leakage
Current
0/18
Any Input
18
10
-5
0.1
1
1
A
C
I
Input Capacitance
Any Input
5
7.5
pF
HCF4098B
5/10
DYNAMIC ELECTRICAL CHARACTERISTICS (T
amb
= 25C, C
L
= 50pF, R
L
= 200K
, t
r
= t
f
= 20 ns)
(*) Typical temperature coefficient for all V
DD
value is 0.3 %/C.
Symbol
Parameter
Test Condition
Value (*)
Unit
R
X
(K
)
C
X
(pF)
V
DD
(V)
Min.
Typ.
Max.
t
PLH
t
PHL
Propagation Delay Time
+TR or -TR to Q or Q
5 to 10000
>15
5
250
500
ns
10
125
250
15
100
200
t
WH
t
WL
Trigger Pulse Width
5 to 10000
>15
5
140
70
ns
10
60
30
15
40
20
t
TLH
Transition Time
5 to 10000
>15
5
100
200
ns
10
50
100
15
40
80
t
THL
Transition Time
5 to 10000
15 to 10000
5
100
200
ns
10
50
100
15
40
80
5 to 10000
0.01
F
to 0.1
F
5
150
300
10
75
150
15
65
130
5 to 10000
0.1
F
to 1
F
5
250
500
10
150
300
15
80
160
t
PLH
t
PHL
Propagation Delay Time
(Reset)
5 to 10000
>15
5
225
450
ns
10
125
250
15
75
150
t
WR
Pulse Width (reset)
100
15
5
200
100
ns
10
80
40
15
60
30
1000
5
1200
600
10
600
300
15
500
250
0.1
F
5
50
250
s
10
30
15
15
20
10
t
r,
t
f
(TR)
Rise or Fall Time (trigger)
5 to 15
100
s
Pulse Width Match Between
Circuits in Same Package
10
10000
5
5
10
%
10
7.5
15
15
7.5
15
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