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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 output cycle time Retriggering may be inhibited by
tying the Q output to an active low input
Features
Y High speed operation input repetition rate l 10 MHz
Y Flexibility of operation optional retriggering lock-out
capability
Y Output pulse width range 50 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
A1 A2 B1 B2
HHXX
XXLX
XXXL
L XHH
L XuH
L X Hu
X LHH
X LuH
X L Hu
HvH H
vv H H
vH H H
Outputs
QQ
LH
LH
LH
LH
LH
H e High Logic Level
L e Low Logic Level
X e Either Low or
High Logic Level
u e Low to High Level
Transition
v e High to Low Level
Transition
e Positive Pulse
e Negative Pulse
C1995 National Semiconductor Corporation TL F 6610
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
b55 C to a125 C
Commercial
0 to a70 C
Storage Temperature Range
b65 C to a150 C
Recommended Operating Conditions
Symbol
Parameter
VCC Supply Voltage
VIH
High Level Input
TA e b55 C
Voltage
TA e 0 C
TA e 25 C
TA e 75 C
TA e 125 C
VIL
Low Level Input
TA e b55 C
Voltage
TA e 0 C
TA e 25 C
TA e 75 C
TA e 125 C
IOH High Level Output Current
IOL Low Level Output Current
TA Free Air Operating Temperature
Min
45
2
17
15
b55
Note The ‘‘Absolute Maximum Ratings’’ are those values
beyond which the safety of the device cannot be guaran-
teed 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
Military
Nom
5
Max
55
Commercial
Min Nom
Max
4 75 5
5 25
Units
V
19
18 V
16
0 85
09
0 85
b0 72
10
125
0
0 85
0 85 V
0 85
b0 96
12 8
75
mA
mA
C
Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted)
Symbol
VI
VOH
VOL
Parameter
Input Clamp Voltage
High Level Output
Voltage
Low Level Output
Voltage
Conditions (Note 3)
VCC e Min II e b12 mA
VCC e Min IOH e Max
VIL e Max VIH e Min (Note 4)
VCC e Min IOL e Max
VIL e Max VIH e Min
(Note 4)
MIL
COM
Min
Typ
(Note 1)
Max
Units
b1 5
V
24 V
04
0 45 V
IIH
High Level Input
VCC e Max VI e 4 5V
Current
60
IIL
Low Level Input
VCC e Max
Current
IOS Short Circuit
Output Current
VCC e Max
(Notes 2 and 4)
MIL VIN e 0 40V
COM VIN e 0 45V
MIL
COM
b10
b10
b1 6
b1 6
b40
b40
ICC Supply Current
VCC e Max
Note 1 All typicals are at VCC e 5V TA e 25 C
Note 2 Not more than one output should be shorted at a time
Note 3 Unless otherwise noted RX e 10k between PIN 13 and VCC on all tests
Note 4 Ground PIN 11 for VOL test on PIN 6 VOH and IOS tests on PIN 8 Open PIN 11 for VOL test on PIN 8 VOH and IOS tests on PIN 6
25
mA
mA
mA
mA
2

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Switching Characteristics at VCC e 5V and TA e 25 C (See Section 1 for Test Waveforms and Output Load)
Symbol
Parameter
From (Input)
To (Output)
Conditions
Min Max Units
tPLH
Propagation Delay Time
Negative Trigger
CL e 15 pF
Low to High Level Output
Input to
CX e 0
True Output
RX e 5 kX
tPHL
Propagation Delay Time
Negative Trigger
High to Low Level Output
Input to
Complement Output
40 ns
40 ns
tPW(MIN)
Minimum True Output
Pulse Width
65 ns
tPW
CSTRAY
Pulse Width
Maximum Allowable
Wiring Capacitance
RX e 10 kX
CX e 1000 pF
3 08
3 76
Pin 13 to GND
50
ms
pF
RX External Timing Resistor
RX External Timing Resistor
DM96
DM86
25 kX
50 kX
Operating Rules
1 An external resistor RX and an external capacitor CX are
required for operation The value of RX can vary between
the limits shown in switching characteristics The value of
CX is optional and may be adjusted to achieve the re-
quired output pulse width
2 Output pulse width tPW may be calculated as follows
(tPW e K RXCX
07
1a
RX
(for CX l 103 pF)
K 0 34
RX in kX CX in pF and tPW in ns
(For CX k 103 pF see curve )
3 RX and CX must be kept as close as possible to the
circuit in order to minimize stray capacitance and noise
pickup If remote trimming is required RX may be split up
such that at least RX(MIN) must be as close as possible
to the circuit and the remote portion of the trimming re-
sistor R k RX(MAX) b RX
4 Set-up time (t1) for input trigger pulse must be l 40 ns
(See Figure 1 )
Release time (t2) for input trigger pulse must be l 40 ns
(See Figure 2 )
5 Retrigger pulse width (see Figure 3 ) is calculated as fol-
lows
(0 7
tW e tPW a tPLH e K RXCX
1a
RX
a tPLH
FIGURE 3
TL F 6610 – 4
Typical ‘‘K’’ Coefficient Variation vs Timing Capacitance
The multiplicative factor ‘‘K’’ varies as a function of the tim-
ing capacitor CX The graph below details this characteris-
tic
FIGURE 1
FIGURE 2
TL F 6610 – 2
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
3

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Typical Performance Characteristics
Output Pulse Width vs
Timing Resistance And
Capacitance For CX k 103 pF
Normalized Output
Pulse Width vs Ambient
Temperature
Normalized Output
Pulse Width vs Supply
Voltage
Normalized Output
Pulse Width vs
Operating Duty Cycle
Pulse Width vs Timing
Resistance
Output Pulse Width vs
Ambient Temperature
Schematic Diagram
TL F 6610 – 6
TL F 6610 – 7
4

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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
5