74AHC02(2008_05) 查看數據表（PDF） - NXP Semiconductors.
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74AHC02 Datasheet PDF : 14 Pages
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NXP Semiconductors
74AHC02; 74AHCT02
Quad 2-input NOR gate
6. Functional description
Table 3. Function table[1]
Input
nA
nB
L
L
X
H
H
X
[1] H = HIGH voltage level;
L = LOW voltage level;
X = don’t care.
7. Limiting values
Output
nY
H
L
L
Table 4. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol Parameter
Conditions
Min
Max
Unit
VCC
VI
IIK
IOK
IO
ICC
IGND
Tstg
Ptot
supply voltage
input voltage
input clamping current
output clamping current
output current
supply current
ground current
storage temperature
total power dissipation
VI < −0.5 V
VO < −0.5 V or VO > VCC + 0.5 V
VO = −0.5 V to (VCC + 0.5 V)
Tamb = −40 °C to +125 °C
−0.5
−0.5
[1] −20
[1] −20
−25
-
−75
−65
[2] -
+7.0
V
+7.0
V
-
mA
+20
mA
+25
mA
+75
mA
-
mA
+150
°C
500
mW
[1] The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
[2] For SO14 packages: above 70 °C the value of Ptot derates linearly at 8 mW/K.
For TSSOP14 packages: above 60 °C the value of Ptot derates linearly at 5.5 mW/K.
For DHVQFN14 packages: above 60 °C the value of Ptot derates linearly at 4.5 mW/K.
8. Recommended operating conditions
Table 5. Operating conditions
Symbol Parameter
74AHC02
VCC
VI
VO
Tamb
∆t/∆V
supply voltage
input voltage
output voltage
ambient temperature
input transition rise and fall rate
Conditions
VCC = 3.0 V to 3.6 V
VCC = 4.5 V to 5.5 V
Min
Typ
Max
Unit
2.0
5.0
5.5
V
0
-
5.5
V
0
-
VCC
V
−40
+25
+125
°C
-
-
100
ns/V
-
-
20
ns/V
74AHC_AHCT02_4
Product data sheet
Rev. 04 — 21 May 2008
© NXP B.V. 2008. All rights reserved.
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