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June 1989
9601/DM9601 Retriggerable One Shot
General Description
These retriggerable one shots provide the designer with
four inputs; two active high and two active low. This permits
a choice of either leading-edge or trailing-edge triggering,
independent of input transition times. When input conditons
for triggering are met, a new cycle starts and the external
capacitor is rapidly discharged and then allowed to charge
again. The retriggerable feature allows for output pulse
widths to be expanded. In fact a continuous true output can
be maintained by having an input cycle time which is shorter
than the
ou
tput cycle time. Retriggering may be inhibited by
tying the Q output to an active low input.
Features
Y
High speed operationÐinput repetition rate
l
10 MHz
Y
Flexibility of operationÐoptional retriggering/lock-out
capability
Y
Output pulse width rangeÐ50 ns to
%
Y
Leading or trailing edge triggering
Y
Complementary outputs/inputs
Y
Input clamping diodes
Y
DTL/TTL compatible logic levels
Y
Alternate Military/Aerospace device (9601) is available.
Contact a National Semiconductor Sales Office/Distrib-
utor for specifications.
Connection Diagram
Dual-In-Line Package
TL/F/6610±1
Order Number 9601DMQB, 9601FMQB, DM9601J, DM9601W or DM9601N
See NS Package Number J14A, N14A or W14B
Function Table
Inputs Outputs
A1 A2 B1 B2 Q Q
H
e
High Logic Level
HHXXLH
L
e
Low Logic Level
XXLXLH
X
e
Either Low or
XXXLLH
High Logic Level
LXHHLH
u
e
Low to High Level
Transition
LXH
u
Éß
Transition
XLHHLH
Ée
Positive Pulse
XL
u
H
Éß
ße
Negative Pulse
XLH
u
Éß
H
v
HH
Éß
vv
HH
Éß
v
HHH
Éß
C
1995 National Semiconductor Corporation
TL/F/6610
RRD-B30M105/Printed in U. S. A.
u
H
Éß
e
High to Low Level
LX
Absolute Maximum Ratings
(Note)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Supply Voltage
7V
Note: The ``AbsoluteMaximumRatings'' are those values
beyondwhich the safety of thedevice cannot be guaran-
teed.Thedeviceshouldnotbeoperatedattheselimits.The
parametricvaluesdefinedinthe``ElectricalCharacteristics''
tablearenotguaranteedattheabsolutemaximumratings.
The``RecommendedOperatingConditions''tablewilldefine
theconditionsforactualdeviceoperation.
Input Voltage
5.5V
Operating Free Air Temperature Range
Military
b
55
§
Cto
a
125
§
C
Commercial
0
§
to
a
70
§
C
Storage Temperature Range
b
65
§
Cto
a
150
§
C
Recommended Operating Conditions
Symbol
Parameter
Military
Commercial
Units
Min Nom Max Min Nom Max
V
CC
Supply Voltage
4.5
5
5.5
4.75
5
5.25
V
V
IH
High Level Input
T
A
eb
55
§
C
2
Voltage
T
A
e
0
§
C
1.9
T
A
e
25
§
C
1.7
1.8
V
T
A
e
75
§
C
1.6
T
A
e
125
§
C
1.5
V
IL
Low Level Input
T
A
eb
55
§
C
0.85
Voltage
T
A
e
0
§
C
0.85
T
A
e
25
§
C
0.9
0.85
V
T
A
e
75
§
C
0.85
T
A
e
125
§
C
0.85
I
OH
High Level Output Current
b
0.72
b
0.96 mA
I
OL
Low Level Output Current
10
12.8 mA
T
A
Free Air Operating Temperature
b
55
125
0
75
§
C
Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Symbol
Parameter
Conditions (Note 3)
Min
Typ
Max Units
(Note 1)
V
I
Input Clamp Voltage V
CC
e
Min, I
I
eb
12 mA
b
1.5 V
V
OH
High Level Output
V
CC
e
Min, I
OH
e
Max
2.4
V
Voltage
V
IL
e
Max, V
IH
e
Min, (Note 4)
V
OL
Low Level Output
V
CC
e
Min, I
OL
e
Max MIL
0.4
Voltage
V
IL
e
Max, V
IH
e
Min
V
(Note 4)
COM
0.45
I
IH
High Level Input
V
CC
e
Max, V
I
e
4.5V
60
m
A
Current
I
IL
Low Level Input
V
CC
e
Max
MIL V
IN
e
0.40V
b
1.6
mA
Current
COM V
IN
e
0.45V
b
1.6
I
OS
Short Circuit
V
CC
e
Max
MIL
b
10
b
40
mA
Output Current
(Notes 2 and 4)
COM
b
10
b
40
I
CC
Supply Current
V
CC
e
Max
25 mA
Note 1: All typicals are at V
CC
e
5V, T
A
e
25
§
C.
Note 2: Not more than one output should be shorted at a time.
Note 3: Unless otherwise noted, R
X
e
10k between PIN 13 and V
CC
on all tests.
Note 4: Ground PIN 11 for V
OL
test on PIN 6, V
OH
and I
OS
tests on PIN 8. Open PIN 11 for V
OL
test on PIN 8, V
OH
and I
OS
tests on PIN 6.
2
Switching Characteristics
at V
CC
e
5V and T
A
e
25
§
C (See Section 1 for Test Waveforms and Output Load)
Symbol
Parameter
From (Input)
Conditions Min Max Units
To (Output)
t
PLH
Propagation Delay Time
Negative Trigger
C
L
e
15 pF
Low to High Level Output
Input to
C
X
e
0
40
ns
True Output
R
X
e
5k
X
t
PHL
Propagation Delay Time
Negative Trigger
High to Low Level Output
Input to
40
ns
Complement Output
t
PW(MIN)
Minimum True Output
Pulse Width
65
ns
t
PW
Pulse Width
R
X
e
10 k
X
3.08
3.76
m
s
C
X
e
1000 pF
C
STRAY
Maximum Allowable
Pin 13 to GND
50
pF
Wiring Capacitance
R
X
External Timing Resistor
DM96
25
k
X
R
X
External Timing Resistor
DM86
50
k
X
Operating Rules
1. An external resistor R
X
and an external capacitor C
X
are
required for operation. The value of R
X
can vary between
the limits shown in switching characteristics. The value of
C
X
is optional and may be adjusted to achieve the re-
quired output pulse width.
2. Output pulse width t
PW
may be calculated as follows:
t
PW
e
KR
X
C
X
5. Retrigger pulse width (see Figure3) is calculated as fol-
lows:
t
W
e
t
PW
a
t
PLH
e
KR
X
C
X
Ð
0.7
R
X
(
a
t
PLH
(for C
X
l
10
3
pF)
K
&
0.34
R
X
in k
X
,C
X
in pF and t
PW
in ns.
(For C
X
k
10
3
pF, see curve.)
3. R
X
and C
X
must be kept as close as possible to the
circuit in order to minimize stray capacitance and noise
pickup. If remote trimming is required, R
X
may be split up
such that at least R
X(MIN)
must be as close as possible
to the circuit and the remote portion of the trimming re-
sistor R
k
R
X(MAX)
b
R
X
.
4. Set-up time (t
1
) for input trigger pulse must be
l
40 ns.
(See Figure1).
Release time (t
2
) for input trigger pulse must be
l
40 ns.
(See Figure2).
Ð
0.7
R
X
(
TL/F/6610±4
FIGURE 3
Typical ``K'' Coefficient Variation vs Timing Capacitance
The multiplicative factor ``K'' varies as a function of the tim-
ing capacitor, C
X
. The graph below details this characteris-
tic:
TL/F/6610±2
FIGURE 1
TL/F/6610±5
*For further detailed device characteristics and output performance, please
refer to the NSC one-shot application note, AN-366.
TL/F/6610±3
FIGURE 2
3
1
a
1
a
Typical Performance Characteristics
Output Pulse Width vs
Normalized Output
Normalized Output
Timing Resistance And
Pulse Width vs Ambient
Pulse Width vs Supply
Capacitance For C
X
k
10
3
pF
Temperature
Voltage
Normalized Output
Pulse Width vs
Pulse Width vs Timing
Output Pulse Width vs
Operating Duty Cycle
Resistance
Ambient Temperature
TL/F/6610±6
Schematic Diagram
TL/F/6610±7
4
 Physical Dimensions
inches (millimeters)
14-Lead Ceramic Dual-In-Line Package (J)
Order Number 9601DMQB or DM9601J
NS Package Number J14A
14-Lead Molded Dual-In-Line Package (N)
Order Number DM9601N
NS Package Number N14A
5
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