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SN74AS194 Datasheet(PDF) 5 Page - Texas Instruments

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No. de pieza SN74AS194
Descripción Electrónicos  SN54AS181B SN74AS181A
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SN74AS194 Datasheet(HTML) 5 Page - Texas Instruments

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SN54AS194, SN74AS194
4-BIT BIDIRECTIONAL UNIVERSAL SHIFT REGISTERS
SDAS212A – DECEMBER 1983 – REVISED DECEMBER 1994
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions
SN54AS194
SN74AS194
UNIT
MIN
NOM
MAX
MIN
NOM
MAX
UNIT
VCC
Supply voltage
4.5
5
5.5
4.5
5
5.5
V
VIH
High-level input voltage
2
2
V
VIL
Low-level input voltage
0.8
0.8
V
IOH
High-level output current
–2
–2
mA
IOL
Low-level output current
20
20
mA
fclock*
Clock frequency
0
75
0
80
MHz
CLR
4
4.5
tw*
Pulse duration
CLK high
4
4
ns
CLK low
6
7
Select
9
9.5
tsu*
Setup time before CLK
Data
3.5
4
ns
Clear inactive state
6
6
th*
Hold time, data after CLK
0.5
0.5
ns
TA
Operating free-air temperature
–55
125
0
70
°C
* On products compliant to MIL-STD-883, Class B, these parameters are based on characterization data, but are not production tested.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54AS194
SN74AS194
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP†
MAX
MIN
TYP†
MAX
UNIT
VIK
VCC = 4.5 V,
II = – 18 mA
– 1.2
– 1.2
V
VOH
VCC = 4.5 V to 5.5 V,
IOH = – 2 mA
VCC –2
VCC –2
V
VOL
VCC = 4.5 V,
IOL = 20 mA
0.35
0.5
0.35
0.5
V
II
Data, CLK, CLR
VCC =5 5V
VI =7V
0.1
0.1
mA
II
Mode, SL, SR
VCC = 5.5 V,
VI = 7 V
0.2
0.2
mA
IIH
Data, CLK, CLR
VCC =5 5V
VI =2 7V
20
20
µA
IIH
Mode, SL, SR
VCC = 5.5 V,
VI = 2.7 V
40
40
µA
IIL
Data, CLK, CLR
VCC =5 5V
VI =0 4V
– 0.5
– 0.5
mA
IIL
Mode, SL, SR
VCC = 5.5 V,
VI = 0.4 V
–1
–1
mA
IO‡
VCC = 5.5 V,
VO = 2.25 V
–30
–112
–30
–112
mA
ICC
VCC =5 5V
Outputs high
30
49
30
43
mA
ICC
VCC = 5.5 V
Outputs low
38
60
38
53
mA
† All typical values are at VCC = 5 V, TA = 25°C.
‡ The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.


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