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54LS109DMQB View Datasheet(PDF) - National ->Texas Instruments

Part NameDescriptionManufacturer
54LS109DMQB Dual Positive-Edge-Triggered J-K Flip-Flops with Preset, Clear, and Complementary Outputs National-Semiconductor
National ->Texas Instruments National-Semiconductor
54LS109DMQB Datasheet PDF : 6 Pages
1 2 3 4 5 6
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
b55 C to a125 C
DM74LS
0 C to a70 C
Storage Temperature Range
b65 C to a150 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
Min
Nom
Max
VCC
Supply Voltage
45
5
55
VIH
High Level Input Voltage
2
VIL
Low Level Input Voltage
07
IOH
High Level Output Current
b0 4
IOL
Low Level Output Current
4
fCLK
Clock Frequency (Note 2)
0
25
fCLK
Clock Frequency (Note 3)
0
20
tW
Pulse Width
Clock High
18
(Note 2)
Preset Low
15
Clear Low
15
tW
Pulse Width
Clock High
25
(Note 3)
Preset Low
20
Clear Low
20
tSU
Setup Time
Data High
30u
(Notes 1 2)
Data Low
20u
tSU
Setup Time
Data High
35u
(Notes 1 3)
Data Low
25u
tH
Hold Time (Note 4)
0u
TA
Free Air Operating Temperature
b55
u Note 1 The symbol ( ) indicates the rising edge of the clock pulse is used for reference
Note 2 CL e 15 pF RL e 2 kX TA e 25 C and VCC e 5V
Note 3 CL e 50 pF RL e 2 kX TA e 25 C and VCC e 5V
Note 4 TA e 25 C and VCC e 5V
125
DM74LS109A
Min
Nom
Max
4 75
5
5 25
2
08
b0 4
8
0
25
0
20
18
15
15
25
20
20
30u
20u
35u
25u
0u
0
70
Units
V
V
V
mA
mA
MHz
MHz
ns
ns
ns
ns
ns
C
2
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