DM74LS109AN [NSC]
Dual Positive-Edge-Triggered J-K Flip-Flops with Preset, Clear, and Complementary Outputs; 双上升沿触发JK触发器与预置，清晰，互补输出
| 型号： | DM74LS109AN |
| 厂家： | 
National Semiconductor |
| 描述： | Dual Positive-Edge-Triggered J-K Flip-Flops with Preset, Clear, and Complementary Outputs |
| 文件： | 总6页 (文件大小：137K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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
e
e
e
H
L
High Logic Level
Inputs
Outputs
Low Logic Level
PR
CLR
CLK
J
K
Q
Q
X
Either Low or High Logic Level
e
Rising Edge of Pulse
This configuration is nonstable; that is, it will not persist when preset
and/or clear inputs return to their inactive (high) state.
u
*
L
H
L
H
H
H
H
H
H
L
L
H
H
H
H
H
X
X
X
u
u
u
u
L
X
X
X
L
H
L
X
X
X
L
H
L
H*
L
L
H
H*
H
e
e
established.
Q
The output logic level of Q before the indicated input conditions were
0
L
Toggle
e
Toggle
each active transition of the clock pulse.
Each output changes to the complement of its previous level on
H
H
X
Q
0
H
Q
0
L
H
X
Q
Q
0
0
C
1995 National Semiconductor Corporation
TL/F/6368
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.
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.
Supply Voltage
Input Voltage
7V
7V
Operating Free Air Temperature Range
DM54LS and 54LS
DM74LS
b
b
a
a
55 C to 125 C
§
§
0 C to 70 C
§
§
a
65 C to 150 C
Storage Temperature Range
§
§
Recommended Operating Conditions
DM54LS109A
DM74LS109A
Symbol
Parameter
Units
Min
4.5
2
Nom
Max
Min
4.75
2
Nom
Max
V
V
V
Supply Voltage
5
5.5
5
5.25
V
V
CC
High Level Input Voltage
Low Level Input Voltage
High Level Output Current
Low Level Output Current
Clock Frequency (Note 2)
Clock Frequency (Note 3)
IH
0.7
0.8
V
IL
b
b
0.4
I
I
0.4
mA
mA
MHz
MHz
OH
OL
4
8
f
f
t
0
25
20
0
25
20
CLK
CLK
W
0
0
Pulse Width
(Note 2)
Clock High
18
15
15
25
20
20
18
15
15
25
20
20
Preset Low
Clear Low
Clock High
Preset Low
Clear Low
Data High
Data Low
Data High
Data Low
ns
t
Pulse Width
(Note 3)
W
ns
ns
t
t
t
Setup Time
30
30
u
u
u
u
u
SU
SU
H
(Notes 1 & 2)
20
35
25
0
20
u
Setup Time
35
u
ns
ns
(Notes 1 & 3)
25
u
Hold Time (Note 4)
0
u
u
b
T
A
Free Air Operating Temperature
55
125
0
70
C
§
Note 1: The symbol ( ) indicates the rising edge of the clock pulse is used for reference.
u
L
e
e
e
e
e
e
e
e
e
Note 2: C
Note 3: C
Note 4: T
15 pF, R
2 kX, T
2 kX, T
25 C and V
§
25 C and V
§
5V.
5V.
L
A
A
CC
CC
50 pF, R
L
L
e
CC
25 C and V
§
5V.
A
2
Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted)
Typ
Symbol
Parameter
Conditions
Min
Max
Units
(Note 1)
e
e
e b
e
b
1.5
V
V
Input Clamp Voltage
V
Min, I
Min, I
18 mA
V
V
I
CC
I
High Level Output
Voltage
V
V
Max
Min
DM54
DM74
DM54
DM74
DM74
J, K
2.5
2.7
3.4
3.4
OH
CC
OH
e
e
Max, V
IL
IH
e
e
e
V
OL
Low Level Output
Voltage
V
V
Min, I
Max
Min
0.25
0.35
0.25
0.4
CC
OL
e
Max, V
IH
IL
0.5
0.4
0.1
0.1
0.2
0.2
20
V
e
e
Min
I
4 mA, V
CC
OL
@
Input Current Max
e
CC
I
I
I
V
Max
I
e
Input Voltage
V
I
7V
Clock
Preset
Clear
J,K
mA
e
2.7V
High Level Input
Current
V
V
Max
Max
Max
IH
CC
e
I
Clock
Preset
Clear
J, K
20
mA
40
40
e
0.4V
b
Low Level Input
Current
V
V
0.4
0.4
0.8
0.8
100
100
8
IL
CC
e
I
b
b
b
Clock
Preset
Clear
DM54
DM74
mA
e
(Note 2)
b
b
b
b
I
I
Short Circuit
V
CC
20
20
OS
CC
mA
mA
Output Current
e
Supply Current
V
CC
Max (Note 3)
4
e
e
25 C (See Section 1 for Test Waveforms and Output Load)
Switching Characteristics at V
5V and T
§
CC
A
e
R
2 kX
L
From (Input)
To (Output)
e
e
L
Symbol
Parameter
C
L
15 pF
C
50 pF
Max
Units
Min
Max
Min
f
t
t
t
t
t
t
Maximum Clock
Frequency
MAX
PLH
PHL
PLH
PHL
PLH
PHL
25
20
MHz
ns
Propagation Delay Time
Low to High Level Output
Clock to
Q or Q
25
30
25
30
25
30
35
35
35
35
35
35
Propagation Delay Time
High to Low Level Output
Clock to
Q or Q
ns
Propagation Delay Time
Low to High Level Output
Clear
to Q
ns
Propagation Delay Time
High to Low Level Output
Clear
to Q
ns
Propagation Delay Time
Low to High Level Output
Preset
to Q
ns
Propagation Delay Time
High to Low Level Output
Preset
to Q
ns
e
e
25 C.
Note 1: All typicals are at V
5V, T
§
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
CC
A
e
shorting the outputs to ground may cause the outputs to change logic state an equivalent test may be performed where V
2.25V and 2.125V for DM54 and
O
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
Physical Dimensions inches (millimeters) (Continued)
16-Lead Ceramic Flat Package
Order Number 54LS109FMQB or DM54LS109AW
NS Package Number W16A
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