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TL/F/6610
9601/DM9601 Retriggerable One Shot
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 output cycle time. Retriggering may be inhibited by
tying the Q
output to an active low input.
Features
Y
High speed operationÐinput repetition ratel10 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/Distributor 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
HeHigh Logic Level
HHXX L H
LeLow Logic Level
XXLX L H
XeEither Low or
XXXL L H
High Logic Level
LXHH L H
u
e
Low to High Level
Transition
LX
u
HÉß
v
e
High to Low Level
LXH
u
Éß
Transition
XLHH L H
ÉePositive Pulse
XL
u
HÉß
ßeNegative Pulse
XLH
u
Éß
H
v
HHÉß
vv
HHÉß
v
HHHÉß
C
1995 National Semiconductor Corporation RRD-B30M105/Printed in U. S. A.
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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
Input Voltage 5.5V
Operating Free Air Temperature Range
Military
b
55§Ctoa125§C
Commercial 0
§
toa70§C
Storage Temperature Range
b
65§Ctoa150§C
Note:
The ‘‘Absolute Maximum Ratings’’ are those values
beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The
parametric values defined in the ‘‘Electrical Characteristics’’
table are not guaranteed at the absolute maximum ratings.
The ‘‘Recommended Operating Conditions’’ table will define
the conditions for actual device operation.
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§C2
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
COM 0.45
V
(Note 4)
I
IH
High Level Input V
CC
e
Max, V
I
e
4.5V
60 mA
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 VCCon all tests.
Note 4: Ground PIN 11 for V
OL
test on PIN 6, VOHand IOStests on PIN 8. Open PIN 11 for VOLtest on PIN 8, VOHand IOStests on PIN 6.
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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
040ns
True Output R
X
e
5kX
t
PHL
Propagation Delay Time Negative Trigger
High to Low Level Output Input to 40 ns
Complement Output
t
PW(MIN)
Minimum True Output
65 ns
Pulse Width
t
PW
Pulse Width R
X
e
10 kX
3.08 3.76 ms
C
X
e
1000 pF
C
STRAY
Maximum Allowable Pin 13 to GND
50 pF
Wiring Capacitance
R
X
External Timing Resistor DM96 25 kX
R
X
External Timing Resistor DM86 50 kX
Operating Rules
1. An external resistor RXand an external capacitor CXare
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
KRXC
X
Ð
1
a
0.7
R
X
(
(for C
X
l
103pF)
K&0.34
R
X
in kX,CXin pF and tPWin ns.
(For C
X
k
103pF, see curve.)
3. RXand CXmust 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 resistor R
k
R
X(MAX)
b
RX.
4. Set-up time (t1) for input trigger pulse must bel40 ns.
(See
Figure 1
).
Release time (t2) for input trigger pulse must bel40 ns.
(See
Figure 2
).
TL/F/6610– 2
FIGURE 1
TL/F/6610– 3
FIGURE 2
5. Retrigger pulse width (see
Figure 3
) is calculated as fol-
lows:
t
W
e
t
PW
a
t
PLH
e
KRXC
X
Ð
1
a
0.7
R
X
(
a
t
PLH
TL/F/6610– 4
FIGURE 3
Typical ‘‘K’’ Coefficient Variation vs Timing Capacitance
The multiplicative factor ‘‘K’’ varies as a function of the timing capacitor, C
X
. The graph below details this characteris-
tic:
TL/F/6610– 5
*For further detailed device characteristics and output performance, please
refer to the NSC one-shot application note, AN-366.
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Typical Performance Characteristics
Capacitance For C
X
k
103pF
Timing Resistance And
Output Pulse Width vs
Temperature
Pulse Width vs Ambient
Normalized Output
Voltage
Pulse Width vs Supply
Normalized Output
Operating Duty Cycle
Pulse Width vs
Normalized Output
Resistance
Pulse Width vs Timing
Ambient Temperature
Output Pulse Width vs
TL/F/6610– 6
Schematic Diagram
TL/F/6610– 7
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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
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9601/DM9601 Retriggerable One Shot
Physical Dimensions inches (millimeters) (Continued)
14-Lead Ceramic Flat Package (W)
Order Number 9601FMQB or DM9601W
NS Package Number W14B
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into the body, or (b) support or sustain life, and whose be reasonably expected to cause the failure of the life
failure to perform, when properly used in accordance support device or system, or to affect its safety or
with instructions for use provided in the labeling, can effectiveness.
be reasonably expected to result in a significant injury
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