74HC27; 74HCT27
Triple 3-input NOR gate
Rev. 5.1 — 27 November 2015
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
VCC.
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
Type number Package
74HC27D
Temperature range Name
Description
Version
40 C to +125 C
SO14
plastic small outline package; 14 leads; body width 3.9 mm SOT108-1
40 C to +125 C
SSOP14
plastic shrink small outline package; 14 leads; body width
5.3 mm
SOT337-1
40 C to +125 C
TSSOP14
plastic thin shrink small outline package; 14 leads; body
width 4.4 mm
SOT402-1
40 C to +125 C
DHVQFN14 plastic dual in-line compatible thermal enhanced very thin
quad flat package; no leads; 14 terminals;
body 2.5 3 0.85 mm
74HCT27D
74HC27DB
74HCT27DB
74HC27PW
74HCT27PW
74HC27BQ
74HCT27BQ
SOT762-1
74HC27; 74HCT27
NXP Semiconductors
Triple 3-input NOR gate
4. Functional diagram
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PQD
Fig 1.
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Logic symbol
Fig 2.
IEC logic symbol
PQD
Fig 3.
Logic diagram (one gate)
5. Pinning information
5.1 Pinning
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DDD
7UDQVSDUHQWWRSYLHZ
DDJ
(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 SO14, (T)SSOP14
74HC_HCT27
Product data sheet
Fig 5.
Pin configuration DHVQFN14
All information provided in this document is subject to legal disclaimers.
Rev. 5.1 — 27 November 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
2 of 16
74HC27; 74HCT27
NXP Semiconductors
Triple 3-input NOR gate
5.2 Pin description
Table 2.
Pin description
Symbol
Pin
Description
1A, 2A, 3A
1, 3, 9
data input
1B, 2B, 3B
2, 4, 10
data input
1C, 2C, 3C
13, 5, 11
data input
1Y, 2Y, 3Y
12, 6, 8
data output
GND
7
ground (0 V)
VCC
14
supply voltage
6. Functional description
Table 3.
Function table[1]
Inputs
Outputs
nA
nB
nC
nY
L
L
L
H
X
X
H
L
X
H
X
L
H
X
X
L
[1]
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
Parameter
VCC
supply voltage
Conditions
Min
Max
Unit
0.5
+7
V
-
20
mA
-
20
mA
-
25
mA
input clamping current
VI < 0.5 V or VI > VCC + 0.5 V
[1]
IOK
output clamping current
VO < 0.5 V or VO > VCC + 0.5 V
[1]
IO
output current
0.5 V < VO < VCC + 0.5 V
ICC
supply current
-
50
mA
IGND
ground current
50
-
mA
Tstg
storage temperature
65
+150
C
Ptot
total power dissipation
-
500
mW
IIK
SO14, (T)SSOP14 and DHVQFN14
packages
[2]
[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
© NXP Semiconductors N.V. 2015. All rights reserved.
3 of 16
74HC27; 74HCT27
NXP Semiconductors
Triple 3-input NOR gate
8. Recommended operating conditions
Table 5.
Recommended operating conditions
Voltages are referenced to GND (ground = 0 V)
Symbol Parameter
Conditions
74HC27
Min
Typ
74HCT27
Max
Min
Typ
Unit
Max
VCC
supply voltage
2.0
5.0
6.0
4.5
5.0
5.5
V
VI
input voltage
0
-
VCC
0
-
VCC
V
VO
output voltage
0
-
VCC
0
-
VCC
V
Tamb
ambient temperature
40
+25
+125
40
+25
+125
C
t/V
input transition rise and fall rate
VCC = 2.0 V
-
-
625
-
-
-
ns/V
VCC = 4.5 V
-
1.67
139
-
1.67
139
ns/V
VCC = 6.0 V
-
-
83
-
-
-
ns/V
9. Static characteristics
Table 6.
Static characteristics type 74HC27; 74HCT27
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter
25 C
Conditions
40 C to +85 C 40 C to +125 C Unit
Min
Typ
Max
Min
Max
Min
Max
VCC = 2.0 V
1.5
1.2
-
1.5
-
1.5
-
V
VCC = 4.5 V
3.15
2.4
-
3.15
-
3.15
-
V
VCC = 6.0 V
4.2
3.2
-
4.2
-
4.2
-
V
VCC = 2.0 V
-
0.8
0.5
-
0.5
-
0.5
V
VCC = 4.5 V
-
2.1
1.35
-
1.35
-
1.35
V
VCC = 6.0 V
-
2.8
1.8
-
1.8
-
1.8
V
HIGH-level
VI = VIH or VIL
output voltage
IO = 20 A; VCC = 2.0 V
1.9
2.0
-
1.9
-
1.9
-
V
IO = 20 A; VCC = 4.5 V
4.4
4.5
-
4.4
-
4.4
-
V
IO = 20 A; VCC = 6.0 V
5.9
6.0
-
5.9
-
5.9
-
V
IO = 4.0 mA; VCC = 4.5 V
3.98 4.32
-
3.84
-
3.7
-
V
IO = 5.2 mA; VCC = 6.0 V
5.48 5.81
-
5.34
-
5.2
-
V
74HC27
VIH
VIL
VOH
VOL
HIGH-level
input voltage
LOW-level
input voltage
LOW-level
VI = VIH or VIL
output voltage
IO = 20 A; VCC = 2.0 V
-
0
0.1
-
0.1
-
0.1
V
IO = 20 A; VCC = 4.5 V
-
0
0.1
-
0.1
-
0.1
V
IO = 20 A; VCC = 6.0 V
-
0
0.1
-
0.1
-
0.1
V
IO = 4.0 mA; VCC = 4.5 V
-
0.15
0.26
-
0.33
-
0.4
V
IO = 5.2 mA; VCC = 6.0 V
-
0.16
0.26
-
0.33
-
0.4
V
-
-
0.1
-
1.0
-
1.0
A
-
-
2.0
-
20
-
40
A
II
input leakage
current
ICC
supply current VI = VCC or GND; IO = 0 A;
VCC = 6.0 V
74HC_HCT27
Product data sheet
VI = VCC or GND;
VCC = 6.0 V
All information provided in this document is subject to legal disclaimers.
Rev. 5.1 — 27 November 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
4 of 16
74HC27; 74HCT27
NXP Semiconductors
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
CI
25 C
Conditions
input
capacitance
40 C to +85 C 40 C to +125 C Unit
Min
Typ
Max
Min
Max
Min
Max
-
3.5
-
-
-
-
-
pF
74HCT27
VIH
HIGH-level
input voltage
VCC = 4.5 V to 5.5 V
2.0
1.6
-
2.0
-
2.0
-
V
VIL
LOW-level
input voltage
VCC = 4.5 V to 5.5 V
-
1.2
0.8
-
0.8
-
0.8
V
VOH
HIGH-level
VI = VIH or VIL; VCC = 4.5 V
output voltage
IO = 20 A
4.4
4.5
-
4.4
-
4.4
-
V
3.98 4.32
-
3.84
-
3.7
-
V
IO = 4.0 mA
VOL
LOW-level
VI = VIH or VIL; VCC = 4.5 V
output voltage
IO = 20 A
-
0
0.1
-
0.1
-
0.1
V
IO = 4.0 mA
-
0.16
0.26
-
0.33
-
0.4
V
VI = VCC or GND;
VCC = 5.5 V
-
-
0.1
-
1.0
-
1.0
A
-
-
2.0
-
20
-
40
A
-
150
540
-
675
-
735
A
-
3.5
-
-
-
-
-
pF
II
input leakage
current
ICC
supply current VI = VCC or GND;
VCC = 5.5 V; IO = 0 A
ICC
additional
per input pin;
supply current VI = VCC 2.1 V;
other inputs at VCC or GND;
VCC = 4.5 V to 5.5 V;
IO = 0 A
nA, nB or nC inputs
CI
input
capacitance
74HC_HCT27
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 5.1 — 27 November 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
5 of 16
74HC27; 74HCT27
NXP Semiconductors
Triple 3-input NOR gate
10. Dynamic characteristics
Table 7.
Dynamic characteristics type 74HC27; 74HCT27
GND = 0 V; for load circuit see Figure 7.
Symbol Parameter
25 C
Conditions
40 C to +125 C Unit
Min
Typ
Max
Max
(85 C)
Max
(125 C)
-
28
90
115
135
VCC = 4.5 V
-
10
18
23
27
ns
VCC = 5.0 V; CL = 15 pF
-
8
-
-
-
ns
-
8
15
20
23
ns
VCC = 2.0 V
-
19
75
95
110
ns
VCC = 4.5 V
-
7
15
19
22
ns
-
6
13
16
19
ns
-
24
-
-
-
pF
-
12
21
26
32
ns
74HC27
propagation delay nA, nB, nC to nY; see Figure 6
tpd
[1]
VCC = 2.0 V
VCC = 6.0 V
transition time
tt
[2]
see Figure 6
VCC = 6.0 V
per package; VI = GND to VCC
[3]
propagation delay nA, nB, nC to nY; see Figure 6
[1]
power dissipation
capacitance
CPD
ns
74HCT27
tpd
VCC = 4.5 V
VCC = 5.0 V; CL = 15 pF
transition time
tt
power dissipation
capacitance
CPD
-
10
-
-
-
ns
VCC = 4.5 V; see Figure 6
[2]
-
7
15
19
22
ns
per package;
VI = GND to VCC 1.5 V
[3]
-
30
-
-
-
pF
[1]
tpd is the same as tPHL and tPLH.
[2]
tt is the same as tTHL and tTLH.
[3]
CPD is used to determine the dynamic power dissipation (PD in W):
PD = CPD VCC2 fi N + (CL VCC2 fo) where:
fi = input frequency in MHz;
fo = output frequency in MHz;
CL = output load capacitance in pF;
VCC = supply voltage in V;
N = number of inputs switching;
(CL VCC2 fo) = sum of outputs.
74HC_HCT27
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 5.1 — 27 November 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
6 of 16
74HC27; 74HCT27
NXP Semiconductors
Triple 3-input NOR gate
11. Waveforms
9,
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W3/+
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