SN74LVC244A
OCTAL BUFFER/DRIVER
WITH 3-STATE OUTPUTS
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SCAS414X–NOVEMBER 1992–REVISED MARCH 2005
Recommended Operating Conditions(1)
TA = 25°C
MIN
–40 TO 85°C
–40 TO 125°C
UNIT
MAX
MIN
1.65
1.5
MAX
MIN
MAX
Operating
VCC Supply voltage
1.65
3.6
3.6
1.65
3.6
V
V
Data retention only
1.5
1.5
VCC = 1.65 V to 1.95 V
VCC = 2.3 V to 2.7 V
VCC = 2.7 V to 3.6 V
VCC = 1.65 V to 1.95 V
VCC = 2.3 V to 2.7 V
VCC = 2.7 V to 3.6 V
0.65 × VCC
0.65 × VCC
0.65 × VCC
High-level
input voltage
VIH
1.7
2
1.7
2
1.7
2
0.35 × VCC
0.35 × VCC
0.35 × VCC
Low-level
input voltage
VIL
VI
0.7
0.8
5.5
VCC
–4
0.7
0.8
5.5
VCC
–4
0.7
0.8
5.5
VCC
–4
V
Input voltage
0
0
0
0
0
0
V
V
VO Output voltage
VCC = 1.65 V
VCC = 2.3 V
VCC = 2.7 V
VCC = 3 V
–8
–8
–8
High-level
IOH
mA
mA
output current
–12
–24
4
–12
–24
4
–12
–24
4
VCC = 1.65 V
VCC = 2.3 V
VCC = 2.7 V
VCC = 3 V
8
8
8
Low-level
IOL
output current
12
12
12
24
24
24
(1) All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
4
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