SN54LV21A, SN74LV21A
DUAL 4 INPUT POSITIVE AND GATES
SCES340E − SEPTEMBER 2000 − REVISED APRIL 2005
recommended operating conditions (see Note 4)
SN54LV21A
MIN
VCC
Supply voltage
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
0
0
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
2
1.5
VCC
×
0.7
VCC
×
0.7
VCC
×
0.7
0.5
VCC
×
0.3
VCC
×
0.3
VCC
×
0.3
5.5
VCC
−50
−2
−6
−12
50
2
6
12
200
100
20
0
0
MAX
5.5
SN74LV21A
MIN
2
1.5
VCC
×
0.7
VCC
×
0.7
VCC
×
0.7
0.5
VCC
×
0.3
VCC
×
0.3
VCC
×
0.3
5.5
VCC
−50
−2
−6
−12
50
2
6
12
200
100
20
ns/V
mA
µA
mA
V
V
MAX
5.5
UNIT
V
VIH
High-level input voltage
VIL
Low-level input voltage
VI
VO
Input voltage
Output voltage
V
V
µA
IOH
High-level output current
IOL
Low-level output current
∆t/∆v
Input transition rise or fall rate
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)
SN54LV21A
PARAMETER
TEST CONDITIONS
IOH = −50
µA
IOH = −2 mA
IOH = −6 mA
IOH = −12 mA
IOL = 50
µA
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
IO = 0
VCC
2 V to 5.5 V
2.3 V
3V
4.5 V
2 V to 5.5 V
2.3 V
3V
4.5 V
0 to 5.5 V
5.5 V
0
3.3 V
1.9
MIN
VCC−0.1
2
2.48
3.8
0.1
0.4
0.44
0.55
±1
20
5
1.9
TYP
MAX
SN74LV21A
MIN
VCC−0.1
2
2.48
3.8
0.1
0.4
0.44
0.55
±1
20
5
µA
µA
µA
pF
V
V
TYP
MAX
UNIT
VOH
VOL
II
ICC
Ioff
Ci
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design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
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