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SN54ALS244B Datasheet(PDF) 4 Page - Texas Instruments

Part No. SN54ALS244B
Description  OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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SN54AS244, SN74AS244
OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS
SDAS142 – D2661, DECEMBER 1982 – REVISED JULY 1987
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
4
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, VCC
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage applied to a disabled 3-state output
5.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range: SN54AS244
– 55
°C to 125°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74AS244
0
°C to 70°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range
– 65
°C to 150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
recommended operating conditions
SN54AS244
SN74AS244
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
–12
–15
mA
IOL
Low-level output current
48
64
mA
TA
Operating free-air temperature
–55
125
0
70
°C
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54AS244
SN74AS244
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP†
MAX
MIN
TYP†
MAX
UNIT
VIK
VCC = 4.5 V,
II = – 18 mA
– 1.2
– 1.2
V
VCC = 4.5 V to 5.5 V,
IOH = – 2 mA
VCC –2
VCC –2
V
VCC = 4.5 V,
IOH = – 3 mA
2.4
3.4
2.4
3.4
V
VOH
VCC = 4.5 V,
IOH = – 12 mA
2.4
V
VCC = 4.5 V,
IOH = – 15 mA
2.4
VOL
VCC = 4.5 V,
IOL = 48 mA
0.55
V
VOL
VCC = 4.5 V,
IOL = 64 mA
0.55
V
IOZH
VCC = 5.5 V,
VO = 2.7 V
50
50
µA
IOZL
VCC = 5.5 V,
VO = 0.4 V
–50
–50
µA
II
VCC = 5.5 V,
VI = 7 V
0.1
0.1
mA
IIH
VCC = 5.5 V,
VI = 2.7 V
20
20
µA
IIL
G
VCC =5 5V
VI =0 4V
– 0.5
– 0.5
mA
IIL
A
VCC = 5.5 V,
VI = 0.4 V
–1
–1
mA
IO‡
VCC = 5.5 V,
VO = 2.25 V
–50
– 150
50
– 150
mA
Outputs high
22
34
22
34
ICC
VCC = 5.5 V
Outputs low
60
90
60
90
mA
Outputs disabled
34
54
34
54
¶ 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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