NSC DM9601J Retriggerable one shot Datasheet

9601/DM9601 Retriggerable One Shot
General Description
Features
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.
Y
Y
Y
Y
Y
Y
Y
Y
High speed operationÐinput repetition rate l 10 MHz
Flexibility of operationÐoptional retriggering/lock-out
capability
Output pulse width rangeÐ50 ns to %
Leading or trailing edge triggering
Complementary outputs/inputs
Input clamping diodes
DTL/TTL compatible logic levels
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
A2
B1
B2
Q
Q
H
X
X
L
L
L
X
X
X
H
H
X
X
X
X
X
L
L
L
X
L
X
H
X
X
L
H
H
L
L
L
L
É
É
L
É
É
É
É
É
H
H
H
H
ß
ß
H
ß
ß
ß
ß
ß
v
v v
v H
C1995 National Semiconductor Corporation
TL/F/6610
Outputs
A1
u
H
H
u
H
H
H
H
u
H
H
u
H
H
H
H e
High Logic Level
L e
Low Logic Level
Xe
Either Low or
High Logic Level
u
e Low to High Level
ve
Transition
High to Low Level
Transition
É e Positive Pulse
ß e Negative Pulse
RRD-B30M105/Printed in U. S. A.
9601/DM9601 Retriggerable One Shot
June 1989
Absolute Maximum Ratings (Note)
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.
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
b 55§ C to a 125§ C
Military
Commercial
0§ to a 70§ C
Storage Temperature Range
b 65§ C to a 150§ C
Recommended Operating Conditions
Symbol
Military
Parameter
VCC
Supply Voltage
VIH
High Level Input
Voltage
TA e b55§ C
Commercial
Nom
Max
Min
Nom
Max
4.5
5
5.5
4.75
5
5.25
TA e 0§ C
1.9
1.7
1.8
TA e 75§ C
V
1.6
TA e 125§ C
Low Level Input
Voltage
V
2
TA e 25§ C
VIL
Units
Min
1.5
TA e b55§ C
0.85
TA e 0§ C
0.85
TA e 25§ C
0.9
0.85
TA e 75§ C
V
0.85
TA e 125§ C
0.85
IOH
High Level Output Current
b 0.72
b 0.96
mA
IOL
Low Level Output Current
10
12.8
mA
TA
Free Air Operating Temperature
75
§C
b 55
125
0
Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted)
Symbol
Parameter
Conditions (Note 3)
VI
Input Clamp Voltage
VCC e Min, II e b12 mA
VOH
High Level Output
Voltage
VCC e Min, IOH e Max
VIL e Max, VIH e Min, (Note 4)
VOL
Low Level Output
Voltage
VCC e Min, IOL e Max
VIL e Max, VIH e Min
(Note 4)
IIH
High Level Input
Current
VCC e Max, VI e 4.5V
IIL
Low Level Input
Current
VCC e Max
Short Circuit
Output Current
VCC e Max
(Notes 2 and 4)
Supply Current
VCC e Max
IOS
ICC
Min
Typ
(Note 1)
Max
Units
b 1.5
V
2.4
V
MIL
0.4
COM
0.45
60
MIL VIN e 0.40V
b 1.6
COM VIN e 0.45V
b 1.6
MIL
b 10
b 40
COM
b 10
b 40
25
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.
2
V
mA
mA
mA
mA
Switching Characteristics at VCC e 5V and TA e 25§ C (See Section 1 for Test Waveforms and Output Load)
Symbol
tPLH
tPHL
Parameter
From (Input)
To (Output)
Conditions
Propagation Delay Time
Low to High Level Output
Negative Trigger
Input to
True Output
Propagation Delay Time
High to Low Level Output
Negative Trigger
Input to
Complement Output
Min
Max
Units
40
ns
40
ns
65
ns
3.76
ms
50
pF
CL e 15 pF
CX e 0
RX e 5 kX
tPW(MIN)
Minimum True Output
Pulse Width
tPW
Pulse Width
RX e 10 kX
CX e 1000 pF
CSTRAY
Maximum Allowable
Wiring Capacitance
Pin 13 to GND
RX
External Timing Resistor
DM96
25
kX
RX
External Timing Resistor
DM86
50
kX
3.08
Operating Rules
5. Retrigger pulse width (see Figure 3 ) is calculated as follows:
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 required output pulse width.
2. Output pulse width tPW may be calculated as follows:
Ð
Ð
tW e tPW a tPLH e K RXCX 1 a
(
0.7
(for CX l 103 pF)
RX
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 resistor 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 ).
tPW e K RXCX 1 a
(
0.7
a tPLH
RX
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, CX. The graph below details this characteristic:
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
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
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
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
LIFE SUPPORT POLICY
NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL
SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or
systems which, (a) are intended for surgical implant
into the body, or (b) support or sustain life, and whose
failure to perform, when properly used in accordance
with instructions for use provided in the labeling, can
be reasonably expected to result in a significant injury
to the user.
National Semiconductor
Corporation
1111 West Bardin Road
Arlington, TX 76017
Tel: 1(800) 272-9959
Fax: 1(800) 737-7018
2. A critical component is any component of a life
support device or system whose failure to perform can
be reasonably expected to cause the failure of the life
support device or system, or to affect its safety or
effectiveness.
National Semiconductor
Europe
Fax: (a49) 0-180-530 85 86
Email: cnjwge @ tevm2.nsc.com
Deutsch Tel: (a49) 0-180-530 85 85
English Tel: (a49) 0-180-532 78 32
Fran3ais Tel: (a49) 0-180-532 93 58
Italiano Tel: (a49) 0-180-534 16 80
National Semiconductor
Hong Kong Ltd.
13th Floor, Straight Block,
Ocean Centre, 5 Canton Rd.
Tsimshatsui, Kowloon
Hong Kong
Tel: (852) 2737-1600
Fax: (852) 2736-9960
National Semiconductor
Japan Ltd.
Tel: 81-043-299-2309
Fax: 81-043-299-2408
National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.
Similar pages