NXP Semiconductors
74HC27; 74HCT27
Triple 3-input NOR gate
6. Functional description
Table 3.
Inputs
nA
L
X
X
H
[1]
H = HIGH voltage level;
L = LOW voltage level;
X = don’t care.
Function table
Outputs
nB
L
X
H
X
nC
L
H
X
X
nY
H
L
L
L
7. Limiting values
Table 4.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol
V
CC
I
IK
I
OK
I
O
I
CC
I
GND
T
stg
P
tot
Parameter
supply voltage
input clamping current
output clamping current
output current
supply current
ground current
storage temperature
total power dissipation
DIP14 package
SO14, (T)SSOP14 and
DHVQFN14 packages
[1]
[2]
Conditions
V
I
<
−0.5
V or V
I
> V
CC
+ 0.5 V
V
O
<
−0.5
V or V
O
> V
CC
+ 0.5 V
−0.5
V < V
O
< V
CC
+ 0.5 V
Min
−0.5
-
-
-
-
−50
−65
-
-
Max
+7
±20
±20
±25
50
-
+150
750
500
Unit
V
mA
mA
mA
mA
mA
°C
mW
mW
The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
For DIP14 package: P
tot
derates linearly with 12 mW/K above 70
°C.
For SO14 package: P
tot
derates linearly with 8 mW/K above 70
°C.
For (T)SSOP14 packages: P
tot
derates linearly with 5.5 mW/K above 60
°C.
For DHVQFN14 packages: P
tot
derates linearly with 4.5 mW/K above 60
°C.
8. Recommended operating conditions
Table 5.
Symbol
Type 74HC27
V
CC
V
I
V
O
supply voltage
input voltage
output voltage
2.0
0
0
5.0
-
-
6.0
V
CC
V
CC
V
V
V
Recommended operating conditions
Parameter
Conditions
Min
Typ
Max
Unit
74HC_HCT27_3
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 03 — 7 January 2008
4 of 16
PHILIPS [ NXP SEMICONDUCTORS ]
