74HC27; 74HCT27
Triple 3-input NOR gate
Rev. 4 — 5 June 2013
Product data sheet
1. General description
The 74HC27; 74HCT27 is a triple 3-input NOR gate. Inputs include clamp diodes. This
enables the use of current limiting resistors to interface inputs to voltages in excess of
V
CC
.
2. Features and benefits
Complies with JEDEC standard no. 7A
Input levels:
For 74HC27: CMOS level
For 74HCT27: TTL level
ESD protection:
HBM JESD22-A114F exceeds 2000 V
MM JESD22-A115-A exceeds 200 V
Multiple package options
Specified from
40 C
to +85
C
and from
40 C
to +125
C
3. Ordering information
Table 1.
Ordering information
Temperature range Name
74HC27N
74HCT27N
74HC27D
74HCT27D
74HC27DB
74HCT27DB
74HC27PW
74HCT27PW
74HC27BQ
74HCT27BQ
40 C
to +125
C
40 C
to +125
C
TSSOP14
40 C
to +125
C
SSOP14
plastic shrink small outline package; 14 leads; body width
5.3 mm
plastic thin shrink small outline package; 14 leads; body
width 4.4 mm
SOT337-1
SOT402-1
SOT762-1
40 C
to +125
C
SO14
plastic small outline package; 14 leads; body width 3.9 mm SOT108-1
40 C
to +125
C
DIP14
Description
plastic dual in-line package; 14 leads (300 mil)
Version
SOT27-1
Type number Package
DHVQFN14 plastic dual in-line compatible thermal enhanced very thin
quad flat package; no leads; 14 terminals;
body 2.5
3
0.85 mm
NXP Semiconductors
74HC27; 74HCT27
Triple 3-input NOR gate
4. Functional diagram
1
2
1
2
13
3
4
5
9
10
11
1A
1B
1C
2A
2B
2C
3A
3B
3C
mna936
≥
1
12
1Y
12
13
3
4
≥
1
6
2Y
6
5
9
A
≥
1
8
B
C
Y
3Y
8
10
11
mna935
mna937
Fig 1.
Logic symbol
Fig 2.
IEC logic symbol
Fig 3.
Logic diagram (one gate)
5. Pinning information
5.1 Pinning
74HC27
74HCT27
1A
1B
2A
2B
2C
2Y
GND
1
2
3
4
5
6
7
14 V
CC
13 1C
12 1Y
11 3C
10 3B
9
8
3A
3Y
001aag759
(1) This is not a supply pin. The substrate is attached to this
pad using conductive die attach material. There is no
electrical or mechanical requirement to solder this pad.
However, if it is soldered, the solder land should remain
floating or be connected to GND.
Fig 4.
Pin configuration DIP14, SO14, (T)SSOP14
Fig 5.
Pin configuration DHVQFN14
74HC_HCT27
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2013. All rights reserved.
Product data sheet
Rev. 4 — 5 June 2013
2 of 17
NXP Semiconductors
74HC27; 74HCT27
Triple 3-input NOR gate
5.2 Pin description
Table 2.
Symbol
1A, 2A, 3A
1B, 2B, 3B
1C, 2C, 3C
1Y, 2Y, 3Y
GND
V
CC
Pin description
Pin
1, 3, 9
2, 4, 10
13, 5, 11
12, 6, 8
7
14
Description
data input
data input
data input
data output
ground (0 V)
supply voltage
6. Functional description
Table 3.
Inputs
nA
L
X
X
H
[1]
Function table
[1]
Outputs
nB
L
X
H
X
nC
L
H
X
X
nY
H
L
L
L
H = HIGH voltage level; L = LOW voltage level; X = don’t care.
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]
[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
[1]
[1]
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.
74HC_HCT27
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2013. All rights reserved.
Product data sheet
Rev. 4 — 5 June 2013
3 of 17
NXP Semiconductors
74HC27; 74HCT27
Triple 3-input NOR gate
8. Recommended operating conditions
Table 5.
Recommended operating conditions
Voltages are referenced to GND (ground = 0 V)
Symbol Parameter
V
CC
V
I
V
O
T
amb
t/V
supply voltage
input voltage
output voltage
ambient temperature
input transition rise and fall rate
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
Conditions
Min
2.0
0
0
40
-
-
-
74HC27
Typ
5.0
-
-
+25
-
1.67
-
Max
6.0
V
CC
V
CC
+125
625
139
83
Min
4.5
0
0
40
-
-
-
74HCT27
Typ
5.0
-
-
+25
-
1.67
-
Max
5.5
V
CC
V
CC
+125
-
139
-
V
V
V
C
ns/V
ns/V
ns/V
Unit
9. Static characteristics
Table 6.
Static characteristics type 74HC27; 74HCT27
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter
74HC27
V
IH
HIGH-level
input voltage
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
V
IL
LOW-level
input voltage
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
V
OH
HIGH-level
V
I
= V
IH
or V
IL
output voltage
I
O
=
20 A;
V
CC
= 2.0 V
I
O
=
20 A;
V
CC
= 4.5 V
I
O
=
20 A;
V
CC
= 6.0 V
I
O
=
4.0
mA; V
CC
= 4.5 V
I
O
=
5.2
mA; V
CC
= 6.0 V
V
OL
LOW-level
V
I
= V
IH
or V
IL
output voltage
I
O
= 20
A;
V
CC
= 2.0 V
I
O
= 20
A;
V
CC
= 4.5 V
I
O
= 20
A;
V
CC
= 6.0 V
I
O
= 4.0 mA; V
CC
= 4.5 V
I
O
= 5.2 mA; V
CC
= 6.0 V
I
I
I
CC
input leakage
current
V
I
= V
CC
or GND;
V
CC
= 6.0 V
1.5
3.15
4.2
-
-
-
1.9
4.4
5.9
1.2
2.4
3.2
0.8
2.1
2.8
2.0
4.5
6.0
-
-
-
0.5
1.35
1.8
-
-
-
-
-
0.1
0.1
0.1
0.26
0.26
0.1
2.0
1.5
3.15
4.2
-
-
-
1.9
4.4
5.9
3.84
5.34
-
-
-
-
-
-
-
-
-
-
0.5
1.35
1.8
-
-
-
-
-
0.1
0.1
0.1
0.33
0.33
1.0
20
1.5
3.15
4.2
-
-
-
1.9
4.4
5.9
3.7
5.2
-
-
-
-
-
-
-
-
-
-
0.5
1.35
1.8
-
-
-
-
-
0.1
0.1
0.1
0.4
0.4
1.0
40
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
A
A
Conditions
Min
25
C
Typ
Max
40 C
to +85
C 40 C
to +125
C
Unit
Min
Max
Min
Max
3.98 4.32
5.48 5.81
-
-
-
-
-
-
-
0
0
0
0.15
0.16
-
-
supply current V
I
= V
CC
or GND; I
O
= 0 A;
V
CC
= 6.0 V
74HC_HCT27
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2013. All rights reserved.
Product data sheet
Rev. 4 — 5 June 2013
4 of 17
NXP Semiconductors
74HC27; 74HCT27
Triple 3-input NOR gate
Table 6.
Static characteristics type 74HC27; 74HCT27
…continued
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter
C
I
74HCT27
V
IH
V
IL
V
OH
HIGH-level
input voltage
LOW-level
input voltage
V
CC
= 4.5 V to 5.5 V
V
CC
= 4.5 V to 5.5 V
2.0
-
1.6
1.2
-
0.8
2.0
-
-
0.8
2.0
-
-
0.8
V
V
input
capacitance
Conditions
Min
-
25
C
Typ
3.5
Max
-
40 C
to +85
C 40 C
to +125
C
Unit
Min
-
Max
-
Min
-
Max
-
pF
HIGH-level
V
I
= V
IH
or V
IL
; V
CC
= 4.5 V
output voltage
I
O
=
20 A
I
O
=
4.0
mA
LOW-level
V
I
= V
IH
or V
IL
; V
CC
= 4.5 V
output voltage
I
O
= 20
A
I
O
= 4.0 mA
input leakage
current
V
I
= V
CC
or GND;
V
CC
= 5.5 V
4.4
4.5
-
-
0.1
0.26
0.1
2.0
4.4
3.84
-
-
-
-
-
-
0.1
0.33
1.0
20
4.4
3.7
-
-
-
-
-
-
0.1
0.4
1.0
40
V
V
V
V
A
A
3.98 4.32
-
-
-
-
0
0.16
-
-
V
OL
I
I
I
CC
I
CC
supply current V
I
= V
CC
or GND;
V
CC
= 5.5 V; I
O
= 0 A
additional
per input pin;
supply current V
I
= V
CC
2.1 V;
other inputs at V
CC
or GND;
V
CC
= 4.5 V to 5.5 V;
I
O
= 0 A
nA, nB or nC inputs
-
-
150
3.5
540
-
-
-
675
-
-
-
735
-
A
pF
C
I
input
capacitance
74HC_HCT27
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2013. All rights reserved.
Product data sheet
Rev. 4 — 5 June 2013
5 of 17
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