TL/F/6610
9
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 operationDinput repetition rate
l
10 MHz
Y
Flexibility of operationDoptional retriggering/lock-out
capability
Y
Output pulse width rangeD50 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
L
e
X
e
High Logic Level
H
X
X
L
L
L
X
X
X
v v
v
H
X
X
X
X
X
L
L
L
v
X
L
X
H
u
H
H
u
H
H
H
H
X
X
L
H
H
u
H
H
u
H
H
H
L
L
L
L
H
H
H
H
Low Logic Level
Either Low or
High Logic Level
u
e
Low to High Level
Transition
v
e
High to Low Level
Transition
é
é
L
é
é
é
é
é
H
é
e
Positive Pulse
e
Negative Pulse
H
C
1995 National Semiconductor Corporation
RRD-B30M105/Printed in U. S. A.