1. General description
The 74HC27; 74HCT27 is a high-speed Si-gate CMOS device and is pin compatible with
Low-Power Schottky TTL (LSTTL).
The 74HC27; 74HCT27 provides the 3-input NOR function.
2. Features
Multiple package options
Complies with JEDEC standard no. 7A
ESD protection:
HBM JESD22-A114E exceeds 2000 V
MM JESD22-A115-A exceeds 200 V
Specified from 40 °Cto+85°C and from 40 °C to +125 °C
3. Ordering information
74HC27; 74HCT27
Triple 3-input NOR gate
Rev. 03 — 7 January 2008 Product data sheet
Table 1. Ordering information
Type number Package
Temperature range Name Description Version
74HC27N 40 °C to +125 °C DIP14 plastic dual in-line package; 14 leads (300 mil) SOT27-1
74HC27D 40 °C to +125 °C SO14 plastic small outline package; 14 leads; body width
3.9 mm SOT108-1
74HC27DB 40 °C to +125 °C SSOP14 plastic shrink small outline package; 14 leads; body width
5.3 mm SOT337-1
74HC27PW 40 °C to +125 °C TSSOP14 plastic thin shrink small outline package; 14 leads; body
width 4.4 mm SOT402-1
74HC27BQ 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
SOT762-1
74HCT27N 40 °C to +125 °C DIP14 plastic dual in-line package; 14 leads (300 mil) SOT27-1
74HCT27D 40 °C to +125 °C SO14 plastic small outline package; 14 leads; body width
3.9 mm SOT108-1
74HC_HCT27_3 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 03 — 7 January 2008 2 of 16
NXP Semiconductors 74HC27; 74HCT27
Triple 3-input NOR gate
4. Functional diagram
74HCT27DB 40 °C to +125 °C SSOP14 plastic shrink small outline package; 14 leads; body width
5.3 mm SOT337-1
74HCT27PW 40 °C to +125 °C TSSOP14 plastic thin shrink small outline package; 14 leads; body
width 4.4 mm SOT402-1
74HCT27BQ 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
SOT762-1
Table 1. Ordering information
…continued
Type number Package
Temperature range Name Description Version
Fig 1. Logic symbol Fig 2. IEC logic symbol Fig 3. Logic diagram (one gate)
mna936
1A
1B 1Y
2
112
1C
13
2A
2B 2Y
4
36
2C
5
3A
3B 3Y
10
98
3C
11
mna935
12
1
1
1
2
1
6
4
3
8
10
9
13
5
11
mna937
A
B
C
Y
74HC_HCT27_3 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 03 — 7 January 2008 3 of 16
NXP Semiconductors 74HC27; 74HCT27
Triple 3-input NOR gate
5. Pinning information
5.1 Pinning
5.2 Pin description
(1) The die substrate is attached to this pad using
conductive die attach material. It can not be used as
supply pin or input
Fig 4. Pin configuration DIP14, SO14, (T)SSOP14 Fig 5. Pin configuration DHVQFN14
74HC27
74HCT27
1A VCC
1B 1C
2A 1Y
2B 3C
2C 3B
2Y 3A
GND 3Y
001aag759
1
2
3
4
5
6
7 8
10
9
12
11
14
13
001aag760
74HC27
74HCT27
Transparent top view
2Y 3A
2C 3B
2B 3C
2A 1Y
1B 1C
GND
3Y
1A
VCC
6 9
5 10
4 11
3 12
2 13
7
8
1
14
terminal 1
index area
Table 2. Pin description
Symbol Pin Description
1A 1 data input
1B 2 data input
2A 3 data input
2B 4 data input
2C 5 data input
2Y 6 data output
GND 7 ground (0 V)
3Y 8 data output
3A 9 data input
3B 10 data input
3C 11 data input
1Y 12 data output
1C 13 data input
VCC 14 supply voltage
74HC_HCT27_3 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 03 — 7 January 2008 4 of 16
NXP Semiconductors 74HC27; 74HCT27
Triple 3-input NOR gate
6. Functional description
[1] H = HIGH voltage level;
L = LOW voltage level;
X = don’t care.
7. Limiting values
[1] The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
[2] For DIP14 package: Ptot derates linearly with 12 mW/K above 70 °C.
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.
8. Recommended operating conditions
Table 3. Function table[1]
Inputs Outputs
nA nB nC nY
LLLH
XXHL
XHXL
HXXL
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 supply voltage 0.5 +7 V
IIK input clamping current VI < 0.5 V or VI>V
CC + 0.5 V [1] -±20 mA
IOK output clamping current VO<0.5 V or VO>V
CC + 0.5 V [1] -±20 mA
IOoutput current 0.5 V < VO < VCC + 0.5 V - ±25 mA
ICC supply current - 50 mA
IGND ground current 50 - mA
Tstg storage temperature 65 +150 °C
Ptot total power dissipation [2]
DIP14 package - 750 mW
SO14, (T)SSOP14 and
DHVQFN14 packages - 500 mW
Table 5. Recommended operating conditions
Symbol Parameter Conditions Min Typ Max Unit
Type 74HC27
VCC supply voltage 2.0 5.0 6.0 V
VIinput voltage 0 - VCC V
VOoutput voltage 0 - VCC V
74HC_HCT27_3 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 03 — 7 January 2008 5 of 16
NXP Semiconductors 74HC27; 74HCT27
Triple 3-input NOR gate
9. Static characteristics
tr, tfinput rise and fall times VCC = 2.0 V - - 1000 ns
VCC = 4.5 V - 6.0 500 ns
VCC = 6.0 V - - 400 ns
Tamb ambient temperature 40 - +125 °C
Type 74HCT27
VCC supply voltage 4.5 5.0 5.5 V
VIinput voltage 0 - VCC V
VOoutput voltage 0 - VCC V
tr, tfinput rise and fall times VCC = 4.5 V - 6.0 500 ns
Tamb ambient temperature 40 - +125 °C
Table 5. Recommended operating conditions
…continued
Symbol Parameter Conditions Min Typ Max Unit
Table 6. Static characteristics type 74HC27; 74HCT27
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions 25 °C40 °C to +85 °C40 °C to +125 °C Unit
Min Typ Max Min Max Min Max
74HC27
VIH HIGH-level
input voltage 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
VIL LOW-level
input voltage 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
VOH HIGH-level
output voltage VI=V
IH or VIL
IO=20 µA; VCC = 2.0 V 1.9 2.0 - 1.9 - 1.9 - V
IO=20 µA; VCC = 4.5 V 4.4 4.5 - 4.4 - 4.4 - V
IO=20 µA; 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
VOL LOW-level
output voltage VI=V
IH or VIL
IO=20µA; VCC = 2.0 V - 0 0.1 - 0.1 - 0.1 V
IO=20µA; VCC = 4.5 V - 0 0.1 - 0.1 - 0.1 V
IO=20µA; 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
IIinput leakage
current VI=V
CC or GND;
VCC = 6.0 V --±0.1 - ±1.0 - ±1.0 µA
ICC supply current VI=V
CC or GND; IO=0A;
VCC = 6.0 V - - 2.0 - 20 - 40 µA
CIinput
capacitance - 3.5 - - - - - pF
74HC_HCT27_3 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 03 — 7 January 2008 6 of 16
NXP Semiconductors 74HC27; 74HCT27
Triple 3-input NOR gate
10. Dynamic characteristics
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
output voltage VI=V
IH or VIL; VCC = 4.5 V
IO=20 µA 4.4 4.5 - 4.4 - 4.4 - V
IO=4.0 mA 3.98 4.32 - 3.84 - 3.7 - V
VOL LOW-level
output voltage VI=V
IH or VIL; VCC = 4.5 V
IO=20µA - 0 0.1 - 0.1 - 0.1 V
IO= 4.0 mA - 0.16 0.26 - 0.33 - 0.4 V
IIinput leakage
current VI=V
CC or GND;
VCC = 5.5 V --±0.1 - ±1.0 - ±1.0 µA
ICC supply current VI=V
CC or GND;
VCC = 5.5 V; IO=0A - - 2.0 - 20 - 40 µA
ICC additional
supply current per input pin;
VI=V
CC 2.1 V;
other inputs at VCC or GND;
VCC = 4.5 V to 5.5 V;
IO=0A
nA, nB or nC inputs - 150 540 - 675 - 735 µA
CIinput
capacitance - 3.5 - - - - - pF
Table 6. Static characteristics type 74HC27; 74HCT27
…continued
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions 25 °C40 °C to +85 °C40 °C to +125 °C Unit
Min Typ Max Min Max Min Max
Table 7. Dynamic characteristics type 74HC27; 74HCT27
GND = 0 V; for load circuit see Figure 7.
Symbol Parameter Conditions 25 °C40 °C to +125 °C Unit
Min Typ Max Max
(85 °C) Max
(125 °C)
74HC27
tpd propagation delay nA, nB, nC to nY; see Figure 6 [1]
VCC = 2.0 V - 28 90 115 135 ns
VCC = 4.5 V - 10 18 23 27 ns
VCC = 5.0 V; CL=15pF - 8 - - - ns
VCC = 6.0 V - 8 15 20 23 ns
tttransition time see Figure 6 [2]
VCC = 2.0 V - 19 75 95 110 ns
VCC = 4.5 V - 7 15 19 22 ns
VCC = 6.0 V - 6 13 16 19 ns
74HC_HCT27_3 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 03 — 7 January 2008 7 of 16
NXP Semiconductors 74HC27; 74HCT27
Triple 3-input NOR gate
[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 µW):
PD=C
PD ×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.
11. Waveforms
CPD power dissipation
capacitance per package; VI= GND to VCC [3] -24- - -pF
74HCT27
tpd propagation delay nA, nB, nC to nY; see Figure 6 [1]
VCC = 4.5 V - 12 21 26 32 ns
VCC = 5.0 V; CL=15pF - 10 - - - ns
tttransition time VCC = 4.5 V; see Figure 6 [2] - 7 15 19 22 ns
CPD power dissipation
capacitance per package;
VI= GND to VCC 1.5 V [3] -30- - -pF
Table 7. Dynamic characteristics type 74HC27; 74HCT27
GND = 0 V; for load circuit see Figure 7.
Symbol Parameter Conditions 25 °C40 °C to +125 °C Unit
Min Typ Max Max
(85 °C) Max
(125 °C)
Measurement points are given in Table 8.
VOL and VOH are typical voltage output drop that occur with the output load.
Fig 6. Input (nA, nB, nC) to output (nY) propagation delays and output transition times
001aag761
nA, nB, nC input
VI
GND
VOH
VOL
nY output
tTHL tTLH
VM
VM
VX
VY
tPHL tPLH
Table 8. Measurement points
Type Input Output
VMVMVXVY
74HC27 0.5VCC 0.5VCC 0.1VCC 0.9VCC
74HCT27 1.3 V 1.3 V 0.1VCC 0.9VCC
74HC_HCT27_3 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 03 — 7 January 2008 8 of 16
NXP Semiconductors 74HC27; 74HCT27
Triple 3-input NOR gate
Test data is given in Table 9.
Definitions test circuit:
RT = Termination resistance should be equal to output impedance Zo of the pulse generator.
CL = Load capacitance including jig and probe capacitance.
RL = Load resistance.
S1 = Test selection switch
Fig 7. Load circuit for measuring switching times
VMVM
tW
tW
10 %
90 %
0 V
VI
VI
negative
pulse
positive
pulse
0 V
VMVM
90 %
10 %
tf
tr
tr
tf
001aad983
DUT
VCC VCC
VIVO
RT
RLS1
CL
open
PULSE
GENERATOR
Table 9. Test data
Type Input Load S1 position
VItr, tfCLRLtPHL, tPLH
74HC27 VCC 6 ns 15 pF, 50 pF 1 kopen
74HCT27 3 V 6 ns 15 pF, 50 pF 1 kopen
74HC_HCT27_3 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 03 — 7 January 2008 9 of 16
NXP Semiconductors 74HC27; 74HCT27
Triple 3-input NOR gate
12. Package outline
Fig 8. Package outline SOT27-1 (DIP14)
UNIT A
max. 1 2 (1) (1)
b1cD (1)
Z
Ee M
H
L
REFERENCES
OUTLINE
VERSION EUROPEAN
PROJECTION ISSUE DATE
IEC JEDEC JEITA
mm
inches
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
SOT27-1 99-12-27
03-02-13
A
min. A
max. bmax.
w
ME
e1
1.73
1.13 0.53
0.38 0.36
0.23 19.50
18.55 6.48
6.20 3.60
3.05 0.2542.54 7.62 8.25
7.80 10.0
8.3 2.24.2 0.51 3.2
0.068
0.044 0.021
0.015 0.77
0.73
0.014
0.009 0.26
0.24 0.14
0.12 0.010.1 0.3 0.32
0.31 0.39
0.33 0.0870.17 0.02 0.13
050G04 MO-001 SC-501-14
MH
c
(e )
1
ME
A
L
seating plane
A1
wM
b1
e
D
A2
Z
14
1
8
7
b
E
pin 1 index
0 5 10 mm
scale
Note
1. Plastic or metal protrusions of 0.25 mm (0.01 inch) maximum per side are not included.
DIP14: plastic dual in-line package; 14 leads (300 mil) SOT27-1
74HC_HCT27_3 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 03 — 7 January 2008 10 of 16
NXP Semiconductors 74HC27; 74HCT27
Triple 3-input NOR gate
Fig 9. Package outline SOT108-1 (SO14)
UNIT A
max. A1A2A3bpcD
(1) E(1) (1)
eH
ELL
pQZywv θ
REFERENCES
OUTLINE
VERSION EUROPEAN
PROJECTION ISSUE DATE
IEC JEDEC JEITA
mm
inches
1.75 0.25
0.10 1.45
1.25 0.25 0.49
0.36 0.25
0.19 8.75
8.55 4.0
3.8 1.27 6.2
5.8 0.7
0.6 0.7
0.3 8
0
o
o
0.25 0.1
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
Note
1. Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included.
1.0
0.4
SOT108-1
X
wM
θ
A
A1
A2
bp
D
HE
Lp
Q
detail X
E
Z
e
c
L
vMA
(A )
3
A
7
8
1
14
y
076E06 MS-012
pin 1 index
0.069 0.010
0.004 0.057
0.049 0.01 0.019
0.014 0.0100
0.0075 0.35
0.34 0.16
0.15 0.05
1.05
0.041
0.244
0.228 0.028
0.024 0.028
0.012
0.01
0.25
0.01 0.004
0.039
0.016
99-12-27
03-02-19
0 2.5 5 mm
scale
SO14: plastic small outline package; 14 leads; body width 3.9 mm SOT108-1
74HC_HCT27_3 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 03 — 7 January 2008 11 of 16
NXP Semiconductors 74HC27; 74HCT27
Triple 3-input NOR gate
Fig 10. Package outline SOT337-1 (SSOP14)
UNIT A1A2A3bpcD
(1) E(1) eH
ELL
pQZywv θ
REFERENCES
OUTLINE
VERSION EUROPEAN
PROJECTION ISSUE DATE
IEC JEDEC JEITA
mm 0.21
0.05 1.80
1.65 0.25 0.38
0.25 0.20
0.09 6.4
6.0 5.4
5.2 0.65 1.25 0.2
7.9
7.6 1.03
0.63 0.9
0.7 1.4
0.9 8
0
o
o
0.13 0.1
DIMENSIONS (mm are the original dimensions)
Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
SOT337-1 99-12-27
03-02-19
(1)
wM
bp
D
HE
E
Z
e
c
vMA
X
A
y
17
14 8
θ
A
A1
A2
Lp
Q
detail X
L
(A )
3
MO-150
pin 1 index
0 2.5 5 mm
scale
SSOP14: plastic shrink small outline package; 14 leads; body width 5.3 mm SOT337-1
A
max.
2
74HC_HCT27_3 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 03 — 7 January 2008 12 of 16
NXP Semiconductors 74HC27; 74HCT27
Triple 3-input NOR gate
Fig 11. Package outline SOT402-1 (TSSOP14)
UNIT A1A2A3bpcD
(1) E(2) (1)
eH
ELL
pQZywv θ
REFERENCES
OUTLINE
VERSION EUROPEAN
PROJECTION ISSUE DATE
IEC JEDEC JEITA
mm 0.15
0.05 0.95
0.80 0.30
0.19 0.2
0.1 5.1
4.9 4.5
4.3 0.65 6.6
6.2 0.4
0.3 0.72
0.38 8
0
o
o
0.13 0.10.21
DIMENSIONS (mm are the original dimensions)
Notes
1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.
2. Plastic interlead protrusions of 0.25 mm maximum per side are not included.
0.75
0.50
SOT402-1 MO-153 99-12-27
03-02-18
wM
bp
D
Z
e
0.25
17
14 8
θ
A
A1
A2
Lp
Q
detail X
L
(A )
3
HE
E
c
vMA
X
A
y
0 2.5 5 mm
scale
TSSOP14: plastic thin shrink small outline package; 14 leads; body width 4.4 mm SOT402-1
A
max.
1.1
pin 1 index
74HC_HCT27_3 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 03 — 7 January 2008 13 of 16
NXP Semiconductors 74HC27; 74HCT27
Triple 3-input NOR gate
Fig 12. Package outline SOT762-1 (DHVQFN14)
terminal 1
index area
0.51
A1Eh
b
UNIT ye
0.2
c
REFERENCES
OUTLINE
VERSION EUROPEAN
PROJECTION ISSUE DATE
IEC JEDEC JEITA
mm 3.1
2.9
Dh
1.65
1.35
y1
2.6
2.4 1.15
0.85
e1
2
0.30
0.18
0.05
0.00 0.05 0.1
DIMENSIONS (mm are the original dimensions)
SOT762-1 MO-241 - - -- - -
0.5
0.3
L
0.1
v
0.05
w
0 2.5 5 mm
scale
SOT762-1
DHVQFN14: plastic dual in-line compatible thermal enhanced very thin quad flat package; no leads;
14 terminals; body 2.5 x 3 x 0.85 mm
A(1)
max.
AA1c
detail X
y
y1C
e
L
Eh
Dh
e
e1
b
26
13 9
8
7
1
14
X
D
E
C
BA
02-10-17
03-01-27
terminal 1
index area
AC
CB
vM
wM
E(1)
Note
1. Plastic or metal protrusions of 0.075 mm maximum per side are not included.
D(1)
74HC_HCT27_3 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 03 — 7 January 2008 14 of 16
NXP Semiconductors 74HC27; 74HCT27
Triple 3-input NOR gate
13. Abbreviations
14. Revision history
Table 10. Abbreviations
Acronym Description
CMOS Complementary Metal Oxide Semiconductor
DUT Device Under Test
ESD ElectroStatic Discharge
HBM Human Body Model
MM Machine Model
TTL Transistor-Transistor Logic
Table 11. Revision history
Document ID Release date Data sheet status Change notice Supersedes
74HC_HCT27_3 20080107 Product data sheet - 74HC_HCT27_CNV_2
Modifications: The format of this data sheet has been redesigned to comply with the new identity
guidelines of NXP Semiconductors.
Legal texts have been adapted to the new company name where appropriate.
Added type number 74HC27BQ and 74HCT27BQ (DHVQFN14 package)
74HC_HCT27_CNV_2 19970828 Product specification - -
74HC_HCT27_3 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 03 — 7 January 2008 15 of 16
NXP Semiconductors 74HC27; 74HCT27
Triple 3-input NOR gate
15. Legal information
15.1 Data sheet status
[1] Please consult the most recently issued document before initiating or completing a design.
[2] The term ‘short data sheet’ is explained in section “Definitions”.
[3] The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status
information is available on the Internet at URL http://www.nxp.com.
15.2 Definitions
Draft — The document is a draft version only. The content is still under
internal review and subject to formal approval, which may result in
modifications or additions. NXP Semiconductors does not give any
representations or warranties as to the accuracy or completeness of
information included herein and shall have no liability for the consequences of
use of such information.
Short data sheet — A short data sheet is an extract from a full data sheet
with the same product type number(s) and title. A short data sheet is intended
for quick reference only and should not be relied upon to contain detailed and
full information. For detailed and full information see the relevant full data
sheet, which is available on request via the local NXP Semiconductors sales
office. In case of any inconsistency or conflict with the short data sheet, the
full data sheet shall prevail.
15.3 Disclaimers
General — Information in this document is believed to be accurate and
reliable. However, NXP Semiconductors does not give any representations or
warranties, expressed or implied, as to the accuracy or completeness of such
information and shall have no liability for the consequences of use of such
information.
Right to make changes — NXP Semiconductors reserves the right to make
changes to information published in this document, including without
limitation specifications and product descriptions, at any time and without
notice. This document supersedes and replaces all information supplied prior
to the publication hereof.
Suitability for use — NXP Semiconductors products are not designed,
authorized or warranted to be suitable for use in medical, military, aircraft,
space or life support equipment, nor in applications where failure or
malfunction of an NXP Semiconductors product can reasonably be expected
to result in personal injury, death or severe property or environmental
damage. NXP Semiconductors accepts no liability for inclusion and/or use of
NXP Semiconductors products in such equipment or applications and
therefore such inclusion and/or use is at the customer’s own risk.
Applications — Applications that are described herein for any of these
products are for illustrative purposes only. NXP Semiconductors makes no
representation or warranty that such applications will be suitable for the
specified use without further testing or modification.
Limiting values — Stress above one or more limiting values (as defined in
the Absolute Maximum Ratings System of IEC 60134) may cause permanent
damage to the device. Limiting values are stress ratings only and operation of
the device at these or any other conditions above those given in the
Characteristics sections of this document is not implied. Exposure to limiting
values for extended periods may affect device reliability.
Terms and conditions of sale — NXP Semiconductors products are sold
subject to the general terms and conditions of commercial sale, as published
at http://www.nxp.com/profile/terms, including those pertaining to warranty,
intellectual property rights infringement and limitation of liability, unless
explicitly otherwise agreed to in writing by NXP Semiconductors. In case of
any inconsistency or conflict between information in this document and such
terms and conditions, the latter will prevail.
No offer to sell or license — Nothing in this document may be interpreted
or construed as an offer to sell products that is open for acceptance or the
grant, conveyance or implication of any license under any copyrights, patents
or other industrial or intellectual property rights.
15.4 Trademarks
Notice: All referenced brands, product names, service names and trademarks
are the property of their respective owners.
16. Contact information
For additional information, please visit: http://www.nxp.com
For sales office addresses, send an email to: salesaddresses@nxp.com
Document status[1][2] Product status[3] Definition
Objective [short] data sheet Development This document contains data from the objective specification for product development.
Preliminary [short] data sheet Qualification This document contains data from the preliminary specification.
Product [short] data sheet Production This document contains the product specification.
NXP Semiconductors 74HC27; 74HCT27
Triple 3-input NOR gate
© NXP B.V. 2008. All rights reserved.
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: salesaddresses@nxp.com
Date of release: 7 January 2008
Document identifier: 74HC_HCT27_3
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
17. Contents
1 General description. . . . . . . . . . . . . . . . . . . . . . 1
2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
3 Ordering information. . . . . . . . . . . . . . . . . . . . . 1
4 Functional diagram . . . . . . . . . . . . . . . . . . . . . . 2
5 Pinning information. . . . . . . . . . . . . . . . . . . . . . 3
5.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
5.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 3
6 Functional description . . . . . . . . . . . . . . . . . . . 4
7 Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 4
8 Recommended operating conditions. . . . . . . . 4
9 Static characteristics. . . . . . . . . . . . . . . . . . . . . 5
10 Dynamic characteristics . . . . . . . . . . . . . . . . . . 6
11 Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
12 Package outline . . . . . . . . . . . . . . . . . . . . . . . . . 9
13 Abbreviations. . . . . . . . . . . . . . . . . . . . . . . . . . 14
14 Revision history. . . . . . . . . . . . . . . . . . . . . . . . 14
15 Legal information. . . . . . . . . . . . . . . . . . . . . . . 15
15.1 Data sheet status . . . . . . . . . . . . . . . . . . . . . . 15
15.2 Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
15.3 Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . 15
15.4 Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 15
16 Contact information. . . . . . . . . . . . . . . . . . . . . 15
17 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16