SCES340D SEPTEMBER 2000 REVISED DECEMBER 2004
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions (see Note 4)
SN54LV21A
MIN
SN74LV21A
MIN
UNIT
MAX
MAX
VCC
Supply voltage
2
5.5
2
5.5
V
VCC = 2 V
VCC = 2.3 V to 2.7 V
VCC = 3 V to 3.6 V
VCC = 4.5 V to 5.5 V
VCC = 2 V
VCC = 2.3 V to 2.7 V
VCC = 3 V to 3.6 V
VCC = 4.5 V to 5.5 V
1.5
1.5
VIH
High-level input voltage
VCC
×
0.7
VCC
×
0.7
VCC
×
0.7
VCC
×
0.7
VCC
×
0.7
VCC
×
0.7
V
0.5
0.5
VIL
Low-level input voltage
VCC
×
0.3
VCC
×
0.3
VCC
×
0.3
VCC
×
0.3
VCC
×
0.3
VCC
×
0.3
V
VI
VO
Input voltage
0
5.5
0
5.5
V
Output voltage
0
VCC
50
0
VCC
50
V
μ
A
VCC = 2 V
VCC = 2.3 V to 2.7 V
VCC = 3 V to 3.6 V
VCC = 4.5 V to 5.5 V
VCC = 2 V
VCC = 2.3 V to 2.7 V
VCC = 3 V to 3.6 V
VCC = 4.5 V to 5.5 V
VCC = 2.3 V to 2.7 V
VCC = 3 V to 3.6 V
VCC = 4.5 V to 5.5 V
IOH
High-level output current
2
2
6
6
mA
12
12
50
50
μ
A
IOL
Low-level output current
2
2
6
6
mA
12
12
200
200
t/
v
Input transition rise or fall rate
100
100
ns/V
20
20
TA
Operating free-air temperature
55
125
40
85
°
C
NOTE 4: 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.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
SN54LV21A
MIN
VCC0.1
2
SN74LV21A
MIN
VCC0.1
2
UNIT
TYP
MAX
TYP
MAX
IOH = 50
μ
A
IOH = 2 mA
IOH = 6 mA
IOH = 12 mA
IOL = 50
μ
A
IOL = 2 mA
IOL = 6 mA
IOL = 12 mA
VI = 5.5 V or GND
VI = VCC or GND,
VI or VO = 0 to 5.5 V
VI = VCC or GND
2 V to 5.5 V
VOH
2.3 V
V
3 V
2.48
2.48
4.5 V
3.8
3.8
2 V to 5.5 V
0.1
0.1
VOL
2.3 V
0.4
0.4
V
3 V
0.44
0.44
4.5 V
0.55
±
1
20
0.55
±
1
20
II
ICC
Ioff
Ci
0 to 5.5 V
μ
A
μ
A
μ
A
pF
IO = 0
5.5 V
0
5
5
3.3 V
1.9
1.9
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