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DM74LS109AJ Schematic ( PDF Datasheet ) - National Semiconductor

Teilenummer DM74LS109AJ
Beschreibung Dual Positive-Edge-Triggered J-K Flip-Flops with Preset/ Clear/ and Complementary Outputs
Hersteller National Semiconductor
Logo National Semiconductor Logo 




Gesamt 6 Seiten
DM74LS109AJ Datasheet, Funktion
June 1989
54LS109 DM54LS109A DM74LS109A
Dual Positive-Edge-Triggered J-K Flip-Flops
with Preset Clear and Complementary Outputs
General Description
This device contains two independent positive-edge-trig-
gered J-K flip-flops with complementary outputs The J and
K data is accepted by the flip-flop on the rising edge of the
clock pulse The triggering occurs at a voltage level and is
not directly related to the transition time of the rising edge of
the clock The data on the J and K inputs may be changed
while the clock is high or low as long as setup and hold
times are not violated A low logic level on the preset or
clear inputs will set or reset the outputs regardless of the
logic levels of the other inputs
Features
Y Alternate Military Aerospace device (54LS109) is avail-
able Contact a National Semiconductor Sales Office
Distributor for specifications
Connection Diagram
Dual-In-Line Package
TL F 6368 – 1
Order Number 54LS109DMQB 54LS109FMQB DM54LS109AJ
DM54LS109AW DM74LS109AM or DM74LS109AN
See NS Package Number J16A M16A N16E or W16A
Function Table
Inputs
Outputs
PR CLR CLK J K
Q
Q
LH
X
XX
H
L
HL
X
XX
L
H
LL
X XX H
H
H H u LL L H
H H u HL
Toggle
uH H
L H Q0
Q0
H H u HH H L
HH
L
X X Q0
Q0
H e High Logic Level
L e Low Logic Level
X e Either Low or High Logic Level
u e Rising Edge of Pulse
e This configuration is nonstable that is it will not persist when preset
and or clear inputs return to their inactive (high) state
Q0 e The output logic level of Q before the indicated input conditions were
established
Toggle e Each output changes to the complement of its previous level on
each active transition of the clock pulse
C1995 National Semiconductor Corporation TL F 6368
RRD-B30M105 Printed in U S A






DM74LS109AJ Datasheet, Funktion
Physical Dimensions inches (millimeters) (Continued)
16-Lead Ceramic Flat Package
Order Number 54LS109FMQB or DM54LS109AW
NS Package Number W16A
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
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
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