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54LS194AFMQB View Datasheet(PDF) - National ->Texas Instruments

Part NameDescriptionManufacturer
54LS194AFMQB Bidirectional Universal Shift Register National-Semiconductor
National ->Texas Instruments National-Semiconductor
54LS194AFMQB Datasheet PDF : 8 Pages
1 2 3 4 5 6 7 8
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
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
VCC
Supply Voltage
VIH
High Level Input Voltage
VIL
Low Level Input Voltage
IOH
High Level Output Current
IOL
Low Level Output Current
fCLK
Clock Frequency (Note 1)
Clock Frequency (Note 2)
tW
Pulse Width
Clock
(Note 3)
Clear
tSU
Setup Time
Mode
(Note 3)
Data
tH
Hold Time (Note 3)
tREL
Clear Release Time (Note 3)
TA
Free Air Operating Temperature
Note 1 CL e 15 pF TA e 25 C and VCC e 5V
Note 2 CL e 50 pF RL e 2 kX TA e 25 C and VCC e 5V
Note 3 TA e 25 C and VCC e 5V
Min
45
2
30
22
17
12
25
16
0
18
b55
54LS194A
Nom
5
Max
55
07
b0 4
4
0
125
DM74LS194A
Min
Nom
Max
4 75
5
5 25
2
08
b0 4
8
0
25
0
20
20
20
30
20
0
25
0
70
Units
V
V
V
mA
mA
MHz
ns
ns
ns
ns
C
Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted)
Symbol
Parameter
Conditions
Min
Typ
(Note 4)
Max
Units
VI
VOH
VOL
Input Clamp Voltage
High Level Output
Voltage
Low Level Output
Voltage
VCC e Min II e b18 mA
VCC e Min IOH e Max
54LS
25
VIL e Max VIH e Min
DM74
27
VCC e Min IOL e Max
VIL e Max VIH e Min
54LS
DM74
b1 5
V
V
34
04
0 35
05
V
IOL e 4 mA VCC e Min
II
Input Current Max
VCC e Max VI e 7V
Input Voltage
04
01
mA
IIH
High Level Input Current
VCC e Max VI e 2 7V
IIL
Low Level Input Current
VCC e Max VI e 0 4V
IOS
Short Circuit
Output Current
VCC e Max
(Note 5)
54LS
DM74
b20
b20
20
mA
b0 4
mA
b100
mA
b100
ICC
Supply Current
VCC e Max (Note 6)
15
23
mA
Note 4 All typicals are at VCC e 5V TA e 25 C
Note 5 Not more than one output should be shorted at a time and the duration should not exceed one second
Note 6 With all outputs open inputs A through D grounded and 4 5V applied to S0 S1 CLEAR and the serial inputs ICC is tested with momentary ground then
4 5V applied to CLOCK
2
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