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SN54ALS244C Datasheet(PDF) 3 Page - Texas Instruments

Part No. SN54ALS244C
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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SN54ALS244C, SN54AS244A, SN74ALS244C, SN74AS244A
OCTAL BUFFERS AND LINE DRIVERS
WITH 3-STATE OUTPUTS
SDAS142C – JULY 1987 – REVISED AUGUST 1995
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions
SN54ALS244C
SN74ALS244C
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
VIL
Low-level input voltage
0.7‡
V
IOH
High-level output current
–12
–15
mA
IOL
Low level output current
12
24
mA
IOL
Low-level output current
48§
mA
TA
Operating free-air temperature
–55
125
0
70
°C
† Applies over temperature range – 55
°C to 70°C
‡ Applies over temperature range 70
°C to 125°C
§ Applies only to the -1 version and only if VCC is between 4.75 V and 5.25 V
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54ALS244C
SN74ALS244C
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP¶
MAX
MIN
TYP¶
MAX
UNIT
VIK
VCC = 4.5 V,
II = – 18 mA
– 1.5
– 1.5
V
VCC =4 5Vto5 5V
IOH = – 0.4 mA
VCC –2
VCC –2
VOH
VCC = 4.5 V to 5.5 V
IOH = – 3 mA
2.4
3.2
2.4
3.2
V
VOH
VCC =4 5V
IOH = – 12 mA
2
V
VCC = 4.5 V
IOH = – 15 mA
2
IOL = 12 mA
0.25
0.4
0.25
0.4
VOL
VCC = 4.5 V
IOL = 24 mA
0.35
0.5
V
IOL = 48 mA (-1 version)
0.35
0.5
IOZH
VCC = 5.5 V,
VO = 2.7 V
20
20
µA
IOZL
VCC = 5.5 V,
VO = 0.4 V
–20
–20
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
VCC = 5.5 V,
VI = 0.4 V
– 0.1
– 0.1
mA
IO#
VCC = 5.5 V,
VO = 2.25 V
–20
–112
–30
–112
mA
Outputs high
9
18
9
17
ICC
VCC = 5.5 V
Outputs low
15
25
15
24
mA
Outputs disabled
17
29
17
27
¶ 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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