74HCT27DB 查看數據表（PDF） - NXP Semiconductors.
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74HCT27DB Datasheet PDF : 16 Pages
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Nexperia
74HC27; 74HCT27
Triple 3-input NOR gate
5.2 Pin description
Table 2. Pin description
Symbol
1A, 2A, 3A
1B, 2B, 3B
1C, 2C, 3C
1Y, 2Y, 3Y
GND
VCC
Pin
1, 3, 9
2, 4, 10
13, 5, 11
12, 6, 8
7
14
6. Functional description
Description
data input
data input
data input
data output
ground (0 V)
supply voltage
Table 3. Function table[1]
Inputs
nA
nB
nC
L
L
L
X
X
H
X
H
X
H
X
X
[1] H = HIGH voltage level; L = LOW voltage level; X = don’t care.
7. Limiting values
Outputs
nY
H
L
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
IIK
IOK
IO
ICC
IGND
Tstg
Ptot
supply voltage
input clamping current
output clamping current
output current
supply current
ground current
storage temperature
total power dissipation
VI < 0.5 V or VI > VCC + 0.5 V
VO < 0.5 V or VO > VCC + 0.5 V
0.5 V < VO < VCC + 0.5 V
SO14, (T)SSOP14 and DHVQFN14
packages
0.5
[1]
-
[1]
-
-
-
50
65
[2]
-
+7 V
20 mA
20 mA
25 mA
50 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 package: Ptot derates linearly with 8 mW/K above 70 C.
For (T)SSOP14 packages: Ptot derates linearly with 5.5 mW/K above 60 C.
For DHVQFN14 packages: Ptot derates linearly with 4.5 mW/K above 60 C.
74HC_HCT27
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 5.1 — 27 November 2015
© Nexperia B.V. 2017. All rights reserved
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