dm9601 National Semiconductor Corporation, dm9601 Datasheet - Page 3

• Manufacturer Part Number: dm9601
• Description: Retriggerable One Shot
• Manufacturer: National Semiconductor Corporation

Switching Characteristics
Operating Rules
1 An external resistor R
2 Output pulse width t
3 R
4 Set-up time (t
t
t
t
t
C
R
R
Symbol
PLH
PHL
PW(MIN)
PW
STRAY
X
X
required for operation The value of R
the limits shown in switching characteristics The value of
C
quired output pulse width
t
R
(For C
circuit in order to minimize stray capacitance and noise
pickup If remote trimming is required R
such that at least R
to the circuit and the remote portion of the trimming re-
sistor R
(See Figure 1 )
Release time (t
(See Figure 2 )
PW
X
X
X
in kX C
is optional and may be adjusted to achieve the re-
and C
e
X k
K R
k
X
X
10
R
C
X
must be kept as close as possible to the
X(MAX)
Propagation Delay Time
Low to High Level Output
Propagation Delay Time
High to Low Level Output
Minimum True Output
Pulse Width
Pulse Width
Maximum Allowable
Wiring Capacitance
External Timing Resistor
External Timing Resistor
X
3
1
in pF and t
) for input trigger pulse must be
2
pF see curve )
) for input trigger pulse must be
1
a
X(MIN)
Parameter
PW
b
0 7
R
FIGURE 1
FIGURE 2
X
X
R
and an external capacitor C
may be calculated as follows
(
PW
X
K
(for C
must be as close as possible
in ns
0 34
X l
10
X
can vary between
3
X
pF)
at V
may be split up
CC
Complement Output
TL F 6610 – 2
TL F 6610 – 3
l
Negative Trigger
Negative Trigger
l
e
From (Input)
To (Output)
True Output
40 ns
40 ns
5V and T
X
Input to
Input to
are
A
3
e
5 Retrigger pulse width (see Figure 3 ) is calculated as fol-
Typical ‘‘K’’ Coefficient Variation vs Timing Capacitance
The multiplicative factor ‘‘K’’ varies as a function of the tim-
ing capacitor C
tic
refer to the NSC one-shot application note AN-366
25 C (See Section 1 for Test Waveforms and Output Load)
For further detailed device characteristics and output performance please
lows
t
W
e
C
C
R
R
C
Pin 13 to GND
DM96
DM86
t
PW
Conditions
L
X
X
X
X
e
e
e
e
e
a
15 pF
0
1000 pF
5 kX
10 kX
X
t
PLH
The graph below details this characteris-
e
K R
FIGURE 3
X
C
X
3 08
Min
1
a
0 7
R
X
(
Max
3 76
40
40
65
50
25
50
a
t
PLH
TL F 6610 – 4
TL F 6610 – 5
Units
kX
kX
ms
pF
ns
ns
ns