1. General description
The 74AHC14; 74AHCT14 is a high-speed Si-gate CMOS device and is pin compatible
with Low-power Schottky TTL (LSTTL). It is specified in compliance with JEDEC standard
No. 7A.
The 74AHC14; 74AHCT14 provides six inverting buffers with Schmitt-trigger action. They
are capable of transforming slowly changing input signals into sharply defined, jitter-free
output signals.
2. Features
nBalanced propagation delays
nAll inputs have Schmitt-trigger actions
nInputs accept voltages higher than VCC
nInput levels:
uFor 74AHC14: CMOS level
uFor 74AHCT14: TTL level
nESD protection:
uHBM EIA/JESD22-A114E exceeds 2000 V
uMM EIA/JESD22-A115-A exceeds 200 V
uCDM EIA/JESD22-C101C exceeds 1000 V
nMultiple package options
nSpecified from −40 °C to +85 °C and from −40 °C to +125 °C
74AHC14; 74AHCT14
Hex inverting Schmitt trigger
Rev. 05 — 4 May 2009 Product data sheet
74AHC_AHCT14_5 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 05 — 4 May 2009 2 of 16
NXP Semiconductors 74AHC14; 74AHCT14
Hex inverting Schmitt trigger
3. Ordering information
4. Functional diagram
Table 1. Ordering information
Type number Package
Temperature range Name Description Version
74AHC14
74AHC14D −40 °C to +125 °C SO14 plastic small outline package; 14 leads;
body width 3.9 mm SOT108-1
74AHC14PW −40 °C to +125 °C TSSOP14 plastic thin shrink small outline package; 14 leads;
body width 4.4 mm SOT402-1
74AHC14BQ −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
74AHCT14
74AHCT14D −40 °C to +125 °C SO14 plastic small outline package; 14 leads;
body width 3.9 mm SOT108-1
74AHCT14PW −40 °C to +125 °C TSSOP14 plastic thin shrink small outline package; 14 leads;
body width 4.4 mm SOT402-1
74AHCT14BQ −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
Fig 1. Logic symbol Fig 2. IEC logic symbol Fig 3. Logic diagram
(one Schmitt-trigger)
mna204
1A 1Y
12
2A 2Y
34
3A 3Y
56
4A 4Y
98
5A 5Y
11 10
6A 6Y
13 12
8
9
10
11
001aac497
12
13
2
1
4
3
6
5
mna025
AY
74AHC_AHCT14_5 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 05 — 4 May 2009 3 of 16
NXP Semiconductors 74AHC14; 74AHCT14
Hex inverting Schmitt trigger
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 a
supply pin or input.
Fig 4. Pin configuration SO14 and TSSOP14 Fig 5. Pin configuration DHVQFN14
14
1A VCC
1Y 6A
2A 6Y
2Y 5A
3A 5Y
3Y 4A
GND 4Y
001aac498
1
2
3
4
5
6
78
10
9
12
11
14
13
001aac499
14
GND(1)
Transparent top view
3Y 4A
3A 5Y
2Y 5A
2A 6Y
1Y 6A
GND
4Y
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 1
1Y 2 data output 1
2A 3 data input 2
2Y 4 data output 2
3A 5 data input 3
3Y 6 data output 3
GND 7 ground (0 V)
4Y 8 data output 4
4A 9 data input 4
5Y 10 data output 5
5A 11 data input 5
6Y 12 data output 6
6A 13 data input 6
VCC 14 supply voltage
74AHC_AHCT14_5 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 05 — 4 May 2009 4 of 16
NXP Semiconductors 74AHC14; 74AHCT14
Hex inverting Schmitt trigger
6. Functional description
[1] H = HIGH voltage level;
L = LOW voltage level.
7. Limiting values
[1] The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
[2] For SO14 packages: above 70 °C the value of Ptot derates linearly at 8 mW/K.
For TSSOP14 packages: above 60 °C the value of Ptot derates linearly at 5.5 mW/K.
For DHVQFN14 packages: above 60 °C the value of Ptot derates linearly at 4.5 mW/K.
8. Recommended operating conditions
Table 3. Function table[1]
Input Output
nA nY
LH
HL
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 +7.0 V
VIinput voltage −0.5 +7.0 V
IIK input clamping current VI < −0.5 V [1] −20 - mA
IOK output clamping current VO < −0.5 V or VO>V
CC + 0.5 V [1] −20 +20 mA
IOoutput current VO = −0.5 V to (VCC + 0.5 V) −25 +25 mA
ICC supply current - +75 mA
IGND ground current −75 - mA
Tstg storage temperature −65 +150 °C
Ptot total power dissipation Tamb = −40 °C to +125 °C[2] - 500 mW
Table 5. Operating conditions
Symbol Parameter Conditions Min Typ Max Unit
74AHC14
VCC supply voltage 2.0 5.0 5.5 V
VIinput voltage 0 - 5.5 V
VOoutput voltage 0 - VCC V
Tamb ambient temperature −40 +25 +125 °C
74AHCT14
VCC supply voltage 4.5 5.0 5.5 V
VIinput voltage 0 - 5.5 V
VOoutput voltage 0 - VCC V
Tamb ambient temperature −40 +25 +125 °C
74AHC_AHCT14_5 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 05 — 4 May 2009 5 of 16
NXP Semiconductors 74AHC14; 74AHCT14
Hex inverting Schmitt trigger
9. Static characteristics
Table 6. Static characteristics
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions 25 °C−40 °C to +85 °C−40 °C to +125 °C Unit
Min Typ Max Min Max Min Max
74AHC14
VOH HIGH-level
output voltage VI= VT+ or VT−
IO=−50 µA; VCC = 2.0 V 1.9 2.0 - 1.9 - 1.9 - V
IO=−50 µA; VCC = 3.0 V 2.9 3.0 - 2.9 - 2.9 - V
IO=−50 µA; VCC = 4.5 V 4.4 4.5 - 4.4 - 4.4 - V
IO=−4.0 mA; VCC = 3.0 V 2.58 - - 2.48 - 2.40 - V
IO=−8.0 mA; VCC = 4.5 V 3.94 - - 3.80 - 3.70 - V
VOL LOW-level
output voltage VI= VT+ or VT−
IO= 50 µA; VCC = 2.0 V - 0 0.1 - 0.1 - 0.1 V
IO= 50 µA; VCC = 3.0 V - 0 0.1 - 0.1 - 0.1 V
IO= 50 µA; VCC = 4.5 V - 0 0.1 - 0.1 - 0.1 V
IO= 4.0 mA; VCC = 3.0 V - - 0.36 - 0.44 - 0.55 V
IO= 8.0 mA; VCC = 4.5 V - - 0.36 - 0.44 - 0.55 V
IIinput leakage
current VI= 5.5 Vor GND;
VCC = 0 V to 5.5 V - - 0.1 - 1.0 - 2.0 µA
ICC supply current VI=V
CC or GND; IO = 0 A;
VCC = 5.5 V - - 2.0 - 20 - 40 µA
CIinput
capacitance - 3 10 - 10 - 10 pF
COoutput
capacitance -4- - - - -pF
74AHCT14
VOH HIGH-level
output voltage VI= VT+ or VT−
IO=−50 µA; VCC = 4.5 V 4.4 4.5 - 4.4 - 4.4 - V
IO=−8.0 mA; VCC = 4.5 V 3.94 - - 3.80 - 3.70 - V
VOL LOW-level
output voltage VI= VT+ or VT−
IO= 50 µA; VCC = 4.5 V - 0 0.1 - 0.1 - 0.1 V
IO= 8.0 mA; VCC = 4.5 V - - 0.36 - 0.44 - 0.55 V
IIinput leakage
current VI= 5.5 Vor GND;
VCC = 0 V to 5.5 V - - 0.1 - 1.0 - 2.0 µA
ICC supply current VI=V
CC or GND; IO = 0 A;
VCC = 5.5 V - - 2.0 - 20 - 40 µA
∆ICC additional
supply current per input pin;
VI=V
CC −2.1 V; other pins
at VCC or GND; IO=0A;
VCC = 4.5 V to 5.5 V
- - 1.35 - 1.5 - 1.5 mA
CIinput
capacitance - 3 10 - 10 - 10 pF
COoutput
capacitance -4- - - - -pF
74AHC_AHCT14_5 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 05 — 4 May 2009 6 of 16
NXP Semiconductors 74AHC14; 74AHCT14
Hex inverting Schmitt trigger
10. Dynamic characteristics
[1] Typical values are measured at nominal supply voltage (VCC = 3.3 V and VCC = 5.0 V).
[2] tpd is the same as tPLH and tPHL.
[3] CPD is used to determine the dynamic power dissipation (PD in µW).
PD=C
PD ×VCC2×fi×N+Σ(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;
Σ(CL×VCC2×fo) = sum of the outputs.
Table 7. Dynamic characteristics
Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 7.
Symbol Parameter Conditions 25 °C−40 °C to +85 °C−40 °C to +125 °C Unit
Min Typ[1] Max Min Max Min Max
74AHC14
tpd propagation
delay nA to nY; see Figure 6 [2]
VCC = 3.0 V to 3.6 V
CL= 15 pF - 4.3 12.8 1.0 15.0 1.0 16.0 ns
CL= 50 pF - 5.8 16.3 1.0 18.0 1.0 20.5 ns
VCC = 4.5 V to 5.5 V
CL= 15 pF - 3.2 8.6 1.0 10.0 1.0 11.0 ns
CL= 50 pF - 4.2 10.6 1.0 12.0 1.0 13.5 ns
CPD power
dissipation
capacitance
fi= 1 MHz; VI= GND to VCC [3] -10- - - - -pF
74AHCT14
tpd propagation
delay nA to nY; see Figure 6 [2]
VCC = 4.5 V to 5.5 V
CL= 15 pF - 4.0 7.0 1.0 8.0 1.0 9.0 ns
CL= 50 pF - 5.4 8.0 1.0 9.0 1.0 10.0 ns
CPD power
dissipation
capacitance
fi= 1 MHz; VI= GND to VCC [3] -12- - - - -pF
74AHC_AHCT14_5 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 05 — 4 May 2009 7 of 16
NXP Semiconductors 74AHC14; 74AHCT14
Hex inverting Schmitt trigger
11. Waveforms
Measurement points are given in Table 8.
VOL and VOH are typical voltage output levels that occur with the output load.
Fig 6. Input to output propagation delays
mna344
tPHL tPLH
VM
VM
VM
VM
nA input
nY output
GND
VI
VOH
VOL
Table 8. Measurement points
Type Input Output
VMVM
74AHC14 0.5 ×VCC 0.5 ×VCC
74AHCT14 1.5 V 0.5 ×VCC
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
Fig 7. Load circuitry for measuring switching times
001aah768
tW
tW
tr
tr
tf
VM
VI
negative
pulse
GND
VI
positive
pulse
GND
10 %
90 %
90 %
10 % VMVM
VM
tf
VCC
DUT
RT
VIVO
CL
G
74AHC_AHCT14_5 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 05 — 4 May 2009 8 of 16
NXP Semiconductors 74AHC14; 74AHCT14
Hex inverting Schmitt trigger
12. Transfer characteristics
13. Transfer characteristics waveforms
Table 9. Test data
Type Input Load Test
VItr, tfCL
74AHC14 VCC ≤3.0 ns 50 pF, 15 pF tPLH, tPHL
74AHCT14 3.0 V ≤3.0 ns 50 pF, 15 pF tPLH, tPHL
Table 10. Transfer characteristics
At recommended operating conditions; voltages are referenced to GND (ground = 0 V); see Figure 8 and Figure 9.
Symbol Parameter Conditions 25 °C−40 °C to +85 °C−40 °C to +125 °C Unit
Min Typ Max Min Max Min Max
74AHC14
VT+ positive-going
threshold
voltage
VCC = 3.0 V - - 2.2 - 2.2 - 2.2 V
VCC = 4.5 V - - 3.15 - 3.15 - 3.15 V
VCC = 5.5 V - - 3.85 - 3.85 - 3.85 V
VT−negative-going
threshold
voltage
VCC = 3.0 V 0.9 - - 0.9 - 0.9 - V
VCC = 4.5 V 1.35 - - 1.35 - 1.35 - V
VCC = 5.5 V 1.65 - - 1.65 - 1.65 - V
VHhysteresis
voltage VCC = 3.0 V 0.3 - 1.2 0.3 1.2 0.25 1.2 V
VCC = 4.5 V 0.4 - 1.4 0.4 1.4 0.35 1.4 V
VCC = 5.5 V 0.5 - 1.6 0.5 1.6 0.45 1.6 V
74AHCT14
VT+ positive-going
threshold
voltage
VCC = 4.5 V - - 1.9 - 1.9 - 1.9 V
VCC = 5.5 V - - 2.1 - 2.1 - 2.1 V
VT−negative-going
threshold
voltage
VCC = 4.5 V 0.5 - - 0.5 - 0.5 - V
VCC = 5.5 V 0.6 - - 0.6 - 0.6 - V
VHhysteresis
voltage VCC = 4.5 V 0.4 - 1.4 0.4 1.4 0.35 1.4 V
VCC = 5.5 V 0.4 - 1.5 0.4 1.5 0.35 1.5 V
Fig 8. Transfer characteristics Fig 9. Transfer characteristics definitions
mna207
VO
VI
VHVT+
VT−
mna208
VO
VIVH
VT+
VT−
74AHC_AHCT14_5 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 05 — 4 May 2009 9 of 16
NXP Semiconductors 74AHC14; 74AHCT14
Hex inverting Schmitt trigger
a. VCC = 3.0 V b. VCC = 4.5 V
c. VCC = 5.5 V
Fig 10. Typical 74AHC transfer characteristics
001 3
1.5
0.5
1
mna411
2VI (V)
ICC
(mA)
05
VI (V)
ICC
(mA)
5
0
1
mna412
2
3
4
1234
02 6
6
0
2
4
mna413
4VI (V)
ICC
(mA)
74AHC_AHCT14_5 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 05 — 4 May 2009 10 of 16
NXP Semiconductors 74AHC14; 74AHCT14
Hex inverting Schmitt trigger
14. Application information
a. VCC = 4.5 V b. VCC = 5.5 V
Fig 11. Typical 74AHCT transfer characteristics
05
VI (V)
ICC
(mA)
6
0
mna414
2
4
1234 02 6
8
0
2
4
6
mna415
4VI (V)
ICC
(mA)
For 74AHC14:
For 74AHCT14:
Fig 12. Relaxation oscillator
mna035
R
C
f1
T
--- 1
0.55 RC×
-------------------------
≈=
f1
T
--- 1
0.60 RC×
-------------------------
≈=
74AHC_AHCT14_5 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 05 — 4 May 2009 11 of 16
NXP Semiconductors 74AHC14; 74AHCT14
Hex inverting Schmitt trigger
15. Package outline
Fig 13. 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
74AHC_AHCT14_5 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 05 — 4 May 2009 12 of 16
NXP Semiconductors 74AHC14; 74AHCT14
Hex inverting Schmitt trigger
Fig 14. 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
74AHC_AHCT14_5 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 05 — 4 May 2009 13 of 16
NXP Semiconductors 74AHC14; 74AHCT14
Hex inverting Schmitt trigger
Fig 15. 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)
74AHC_AHCT14_5 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 05 — 4 May 2009 14 of 16
NXP Semiconductors 74AHC14; 74AHCT14
Hex inverting Schmitt trigger
16. Abbreviations
17. Revision history
Table 11. Abbreviations
Acronym Description
CDM Charged Device Model
CMOS Complementary Metal-Oxide Semiconductor
DUT Device Under Test
ESD ElectroStatic Discharge
HBM Human Body Model
LSTTL Low-power Schottky Transistor-Transistor Logic
MM Machine Model
Table 12. Revision history
Document ID Release date Data sheet status Change notice Supersedes
74AHC_AHCT14_5 20090504 Product data sheet - 74AHC_AHCT14_4
Modifications: •Table 6: the conditions for HIGH-level output voltage and LOW-level output voltage have
been changed.
74AHC_AHCT14_4 20080425 Product data sheet - 74AHC_AHCT14_3
74AHC_AHCT14_3 20030526 Product specification - 74AHC_AHCT14_2
74AHC_AHCT14_2 19990927 Product specification - 74AHC_AHCT14_N_1
74AHC_AHCT14_N_1 19990111 Preliminary specification - -
74AHC_AHCT14_5 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 05 — 4 May 2009 15 of 16
NXP Semiconductors 74AHC14; 74AHCT14
Hex inverting Schmitt trigger
18. Legal information
18.1 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.
18.2 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.
18.3 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.
Export control — This document as well as the item(s) described herein
may be subject to export control regulations. Export might require a prior
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18.4 Trademarks
Notice: All referenced brands, product names, service names and trademarks
are the property of their respective owners.
19. Contact information
For more information, please visit: http://www.nxp.com
For sales office addresses, please 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 74AHC14; 74AHCT14
Hex inverting Schmitt trigger
© NXP B.V. 2009. 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: 4 May 2009
Document identifier: 74AHC_AHCT14_5
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
20. Contents
1 General description. . . . . . . . . . . . . . . . . . . . . . 1
2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
3 Ordering information. . . . . . . . . . . . . . . . . . . . . 2
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 Transfer characteristics. . . . . . . . . . . . . . . . . . . 8
13 Transfer characteristics waveforms. . . . . . . . . 8
14 Application information. . . . . . . . . . . . . . . . . . 10
15 Package outline . . . . . . . . . . . . . . . . . . . . . . . . 11
16 Abbreviations. . . . . . . . . . . . . . . . . . . . . . . . . . 14
17 Revision history. . . . . . . . . . . . . . . . . . . . . . . . 14
18 Legal information. . . . . . . . . . . . . . . . . . . . . . . 15
18.1 Data sheet status . . . . . . . . . . . . . . . . . . . . . . 15
18.2 Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
18.3 Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . 15
18.4 Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 15
19 Contact information. . . . . . . . . . . . . . . . . . . . . 15
20 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
