Datasheet

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1
2 18
1Y1
1OE
1A1
4 16
1Y21A2
6 14
1Y3
1A3
8 12
1Y4
1A4
19
11 9
2Y1
2OE
2A1
13 7
2Y22A2
15 5
2Y3
2A3
17 3
2Y4
2A4
Pin numbers shown are for the DB, DGV, DW, N, NS, PW, and RGY packages.
Absolute Maximum Ratings
(1)
SN74LVC244A
OCTAL BUFFER/DRIVER
WITH 3-STATE OUTPUTS
SCAS414X – NOVEMBER 1992 – REVISED MARCH 2005
LOGIC DIAGRAM (POSITIVE LOGIC)
over operating free-air temperature range (unless otherwise noted)
MIN MAX UNIT
V
CC
Supply voltage range –0.5 6.5 V
V
I
Input voltage range
(2)
–0.5 6.5 V
V
O
Voltage range applied to any output in the high-impedance or power-off state
(2)
–0.5 6.5 V
V
O
Voltage range applied to any output in the high or low state
(2) (3)
–0.5 V
CC
+ 0.5 V
I
IK
Input clamp current V
I
< 0 –50 mA
I
OK
Output clamp current V
O
< 0 –50 mA
I
O
Continuous output current ±50 mA
Continuous current through V
CC
or GND ±100 mA
DB package
(4)
70
DGV package
(4)
92
DW package
(4)
58
GQN/ZQN package
(4)
78
θ
JA
Package thermal impedance °C/W
N package
(4)
69
NS package
(4)
60
PW package
(4)
83
RGY package
(5)
37
T
stg
Storage temperature range –65 150 °C
P
tot
Power dissipation T
A
= –40°C to 125°C
(6) (7)
500 mW
(1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating
conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) The input and output negative-voltage ratings may be exceeded if the input and output current ratings are observed.
(3) The value of V
CC
is provided in the recommended operating conditions table.
(4) The package thermal impedance is calculated in accordance with JESD 51-7.
(5) The package thermal impedance is calculated in accordance with JESD 51-5.
(6) For the DW package: above 70°C the value of P
tot
derates linearly with 8 mW/K.
(7) For the DB, DGV, N, NS, and PW packages: above 60°C the value of P
tot
derates linearly with 5.5 mW/K.
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