TLF6611

June 1989

9602DM9602 Dual Retriggerable

Resettable One Shots

General Description

These dual resettable retriggerable one shots have two in-

puts per function one which is active high and one which is

active low This allows the designer to employ either lead-

ing-edge or trailing-edge triggering which is independent of

input transition times When input conditions for triggering

are met a new cycle starts and the external capacitor is

allowed to rapidly discharge and then charge again The

retriggerable feature permits output pulse widths to be ex-

tended In fact a continuous true output can be maintained

by having an input cycle time which is shorter than the out-

put cycle time The output pulse may then be terminated at

any time by applying a low logic level to the RESET pin

Retriggering may be inhibited by either connecting the Q

output to an active high input or the Q output to an active

low input

Features

Y

70 ns to % output width range

Y

Resettable and retriggerable0% to 100% duty cycle

Y

TTL input gatingleading or trailing edge triggering

Y

Complementary TTL outputs

Y

Optional retrigger lock-out capability

Y

variations

Y

Alternate MilitaryAerospace device (54xxx) is available

Contact a National Semiconductor Sales OfficeDistrib-

utor for specifications

Connection Diagram

Dual-In-Line Package

TLF6611 – 1

Order Number 9602DMQB 9602FMQB or DM9602N

See NS Package Number J16A N16E or W16A

Function Table

Pin No’s

Operation

A

B

CLR

H

L

H

Trigger

HL

H

Trigger

X

X

L

Reset

C1995 National Semiconductor Corporation

RRD-B30M105Printed in U S A