TL F 6368
54LS109DM54LS109ADM74LS109A
Dual
Positive-Edge-Triggered
J-K
Flip-Flops
with
Preset
Clear
and
Complementary
Outputs
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
L
H
X
X
X
H
L
H
L
X
X
X
L
H
L
L
X
X
X
H
H
H
H
u
L
L
L
H
H
H
u
H
L
Toggle
H
H
u
L
H
Q
0
Q
0
H
H
u
H
H
H
L
H
H
L
X
X
Q
0
Q
0
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
Q
0
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
RRD-B30M105 Printed in U S A
Absolute Maximum Ratings
(Note)
If Military Aerospace specified devices are required
please contact the National Semiconductor Sales
Office Distributors for availability and specifications
Supply Voltage
7V
Input Voltage
7V
Operating Free Air Temperature Range
DM54LS and 54LS
b
55 C to
a
125 C
DM74LS
0 C to
a
70 C
Storage Temperature Range
b
65 C to
a
150 C
Note
The ``Absolute Maximum Ratings'' are those values
beyond which the safety of the device cannot be guaran-
teed 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
Recommended Operating Conditions
Symbol
Parameter
DM54LS109A
DM74LS109A
Units
Min
Nom
Max
Min
Nom
Max
V
CC
Supply Voltage
4 5
5
5 5
4 75
5
5 25
V
V
IH
High Level Input Voltage
2
2
V
V
IL
Low Level Input Voltage
0 7
0 8
V
I
OH
High Level Output Current
b
0 4
b
0 4
mA
I
OL
Low Level Output Current
4
8
mA
f
CLK
Clock Frequency (Note 2)
0
25
0
25
MHz
f
CLK
Clock Frequency (Note 3)
0
20
0
20
MHz
t
W
Pulse Width
Clock High
18
18
(Note 2)
Preset Low
15
15
ns
Clear Low
15
15
t
W
Pulse Width
Clock High
25
25
(Note 3)
Preset Low
20
20
ns
Clear Low
20
20
t
SU
Setup Time
Data High
30
u
30
u
ns
(Notes 1
2)
Data Low
20
u
20
u
t
SU
Setup Time
Data High
35
u
35
u
ns
(Notes 1
3)
Data Low
25
u
25
u
t
H
Hold Time (Note 4)
0
u
0
u
ns
T
A
Free Air Operating Temperature
b
55
125
0
70
C
Note 1
The symbol (
u
) indicates the rising edge of the clock pulse is used for reference
Note 2
C
L
e
15 pF R
L
e
2 kX T
A
e
25 C and V
CC
e
5V
Note 3
C
L
e
50 pF R
L
e
2 kX T
A
e
25 C and V
CC
e
5V
Note 4
T
A
e
25 C and V
CC
e
5V
2
Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
(Note 1)
V
I
Input Clamp Voltage
V
CC
e
Min I
I
e b
18 mA
b
1 5
V
V
OH
High Level Output
V
CC
e
Min I
OH
e
Max
DM54
2 5
3 4
V
Voltage
V
IL
e
Max V
IH
e
Min
DM74
2 7
3 4
V
OL
Low Level Output
V
CC
e
Min I
OL
e
Max
DM54
0 25
0 4
Voltage
V
IL
e
Max V
IH
e
Min
DM74
0 35
0 5
V
I
OL
e
4 mA V
CC
e
Min
DM74
0 25
0 4
I
I
Input Current
Max
V
CC
e
Max
J K
0 1
Input Voltage
V
I
e
7V
Clock
0 1
mA
Preset
0 2
Clear
0 2
I
IH
High Level Input
V
CC
e
Max
J K
20
Current
V
I
e
2 7V
Clock
20
m
A
Preset
40
Clear
40
I
IL
Low Level Input
V
CC
e
Max
J K
b
0 4
Current
V
I
e
0 4V
Clock
b
0 4
mA
Preset
b
0 8
Clear
b
0 8
I
OS
Short Circuit
V
CC
e
Max
DM54
b
20
b
100
mA
Output Current
(Note 2)
DM74
b
20
b
100
I
CC
Supply Current
V
CC
e
Max (Note 3)
4
8
mA
Switching Characteristics
at V
CC
e
5V and T
A
e
25 C (See Section 1 for Test Waveforms and Output Load)
From (Input)
R
L
e
2 kX
Symbol
Parameter
To (Output)
C
L
e
15 pF
C
L
e
50 pF
Units
Min
Max
Min
Max
f
MAX
Maximum Clock
25
20
MHz
Frequency
t
PLH
Propagation Delay Time
Clock to
25
35
ns
Low to High Level Output
Q or Q
t
PHL
Propagation Delay Time
Clock to
30
35
ns
High to Low Level Output
Q or Q
t
PLH
Propagation Delay Time
Clear
25
35
ns
Low to High Level Output
to Q
t
PHL
Propagation Delay Time
Clear
30
35
ns
High to Low Level Output
to Q
t
PLH
Propagation Delay Time
Preset
25
35
ns
Low to High Level Output
to Q
t
PHL
Propagation Delay Time
Preset
30
35
ns
High to Low Level Output
to Q
Note 1
All typicals are at V
CC
e
5V T
A
e
25 C
Note 2
Not more than one output should be shorted at a time and the duration should not exceed one second For devices with feedback from the outputs where
shorting the outputs to ground may cause the outputs to change logic state an equivalent test may be performed where V
O
e
2 25V and 2 125V for DM54 and
DM74 series respectively with the minimum and maximum limits reduced by one half from their stated values This is very useful when using automatic test
equipment
Note 3
I
CC
is measured with all outputs open with CLOCK grounded after setting the Q and Q outputs high in turn
3
Physical Dimensions
inches (millimeters)
16-Lead Ceramic Dual-In-Line Package (J)
Order Number 54LS109DMQB or DM54LS109AJ
NS Package Number J16A
4
Physical Dimensions
inches (millimeters) (Continued)
16-Lead Small Outline Molded Package (M)
Order Number DM74LS109AM
NS Package Number M16A
16-Lead Molded Dual-In-Line Package (N)
Order Number DM74LS109AN
NS Package Number N16E
5
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