Product specification
Supersedes data of 1999 Jan 11
File under Integrated Circuits, IC06
1999 Sep 27
Page 2
Philips SemiconductorsProduct specification
Hex inverting Schmitt trigger74AHC14; 74AHCT14
FEATURES
• ESD protection:
HBM EIA/JESD22-A114-A
exceeds 2000 V
MM EIA/JESD22-A115-A
exceeds 200 V
CDM EIA/JESD22-C101
exceeds 1000 V
• Balanced propagation delays
• Inputsacceptsvoltageshigherthan
V
CC
• For AHC only:
operates with CMOS input levels
• For AHCT only:
operates with TTL input levels
• Specified from
−40 to +85 and +125 °C.
DESCRIPTION
The 74AHC/AHCT14 are high-speed
Si-gate CMOS devices and are pin
compatible with low power Schottky
TTL (LSTTL). They are specified in
compliance with JEDEC standard
No. 7A.
QUICK REFERENCE DATA
GND = 0 V; T
=25°C; tr=tf≤3.0 ns.
amb
SYMBOLPARAMETERCONDITIONS
t
PHL/tPLH
C
I
C
O
C
PD
propagation delay
nA to nY
input capacitanceVI=VCCor GND3.03.0pF
output capacitance4.04.0pF
power dissipation
capacitance
CL=15pF;
VCC=5V
CL= 50 pF;
f = 1 MHz;
notes 1 and 2
Notes
1. C
is used to determine the dynamic power dissipation (PDin µW).
PD
PD=CPD× V
2
× fi+ ∑ (CL× V
CC
2
× fo) where:
CC
fi= input frequency in MHz;
fo= output frequency in MHz;
∑ (CL× V
2
× fo) = sum of outputs;
CC
CL= output load capacitance in pF;
VCC= supply voltage in Volts.
2. The condition is VI= GND to VCC.
PINNING
TYPICAL
UNIT
AHCAHCT
3.24.0ns
1012pF
The 74AHC/AHCT14 provide six
inverting buffers with Schmitt-trigger
action. They are capable of
transforming slowly changing input
signalsinto sharply defined, jitter-free
output signals.
FUNCTION TABLE
See note 1.
INPUTSOUTPUTS
nAnY
LH
HL
Note
1. H = HIGH voltage level;
L = LOW voltage level.
PINSYMBOLDESCRIPTION
1, 3, 5, 9, 11 and 131A to 6Adata inputs
2, 4, 6, 8, 10 and 121Y to 6Ydata outputs
7GNDground (0 V)
14V
DC supply voltage2.05.05.54.55.05.5V
input voltage0−5.50−5.5V
output voltage0−V
operating ambient temperature
range
see DC and AC
characteristics per
−40+25+85−40+25+85°C
−40+25+125−40+25+125°C
0−V
CC
CC
V
device
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134); voltages are referenced to GND (ground= 0 V).
SYMBOLPARAMETERCONDITIONSMIN. MAX. UNIT
V
CC
V
I
I
IK
I
OK
I
O
I
CC
T
stg
P
D
DC supply voltage−0.5+7.0V
input voltage range−0.5+7.0V
DC input diode currentVI< −0.5 V; note 1−−20mA
DC output diode currentVO< −0.5 Vor VO>VCC+ 0.5 V; note 1−±20mA
DC output source or sink current −0.5V<VO<VCC+ 0.5 V−±25mA
DC VCC or GND current−±75mA
storage temperature range−65+150 °C
power dissipation per packagefor temperature range: −40 to +125 °C; note 2−500mW
Notes
1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. For SO packages: above 70 °C the value of P
derates linearly with 8 mW/K.
D
For TSSOP packages: above 60 °C the value of PDderates linearly with 5.5 mW/K.
1999 Sep 274
Page 5
Philips SemiconductorsProduct specification
Hex inverting Schmitt trigger74AHC14; 74AHCT14
DC CHARACTERISTICS
Type 74AHC14
Over recommended operating conditions; voltage are referenced to GND (ground = 0 V).
SYMBOLPARAMETER
V
T+
positive going
threshold
V
T−
negative going
threshold
V
H
hysteresis
(VT+− VT−)
V
OH
HIGH-level output
voltage; all outputs
HIGH-level output
voltage
V
OL
LOW-level output
voltage; all outputs
LOW-level output
voltage
I
I
input leakage
current
I
CC
quiescent supply
current
C
I
input capacitance−310−10−10pF
TEST CONDITIONST
25−40 to +85−40 to +125
amb
(°C)
UNIT
OTHERVCC(V)
MIN. TYP. MAX. MIN. MAX. MIN. MAX.
3.0−− 2.2−2.2−2.2V
4.5−− 3.15−3.15−3.15
5.5−− 3.85−3.85−3.85
3.00.9−−0.9−0.9−V
4.51.35 −−1.35 −1.35 −
5.51.65 −−1.65 −1.65 −
3.00.3−1.20.31.20.25 1.2V
4.50.4−1.40.41.40.35 1.4
5.50.5−1.60.51.60.45 1.6
VI=VIHor VIL;
IO= −50 µA
2.01.92.0−1.9−1.9−V
3.02.93.0−2.9−2.9−
4.54.44.5−4.4−4.4−
V
I=VIH
or VIL;
3.02.58 −−2.48 −2.40 −V
IO= −4.0 mA
V
I=VIH
or VIL;
4.53.94 −−3.8−3.70 −
IO= −8.0 mA
VI=VIHor VIL;
IO=50µA
2.0−00.1−0.1−0.1V
3.0−00.1−0.1−0.1
4.5−00.1−0.1−0.1
V
I=VIH
or VIL;
3.0−− 0.36−0.44−0.55V
IO=4mA
V
I=VIH
or VIL;
4.5−− 0.36−0.44−0.55
IO=8mA
VI=VCCor GND5.5−− 0.1−1.0−2.0µA
VI=VCCor GND;
5.5−− 2.0−20−40µA
IO=0
1999 Sep 275
Page 6
Philips SemiconductorsProduct specification
Hex inverting Schmitt trigger74AHC14; 74AHCT14
Type 74AHCT14
Over recommended operating conditions; voltage are referenced to GND (ground = 0 V).
SYMBOLPARAMETER
V
T+
positive going
threshold
V
T−
negative going
threshold
V
H
hysteresis
(VT+− VT−)
V
OH
HIGH-level output
voltage; all outputs
HIGH-level output
voltage
V
OL
LOW-level output
voltage; all outputs
LOW-level output
voltage
I
I
input leakage
current
I
CC
quiescent supply
current
∆I
CC
additional
quiescent supply
current per input
pin
C
I
input capacitance−310−10−10pF
TEST CONDITIONST
25−40 to +85−40 to +125
amb
(°C)
UNIT
OTHERVCC(V)
MIN. TYP. MAX. MIN. MAX. MIN. MAX.
4.5−− 1.9−1.9−1.9V
5.5−− 2.1−2.1−2.1V
4.50.5−−0.5−0.5−V
5.50.6−−0.6−0.6−V
4.50.4−1.40.41.40.35 1.4V
5.50.4−1.50.41.50.35 1.5V
VI=VIHor VIL;
4.54.44.5−4.4−4.4−V
IO= −50 µA
V
I=VIH
or VIL;
4.53.94 −−3.8−3.7−V
IO= −8.0 mA
VI=VIHor VIL;
4.5−00.1−0.1−0.1V
IO=50µA
V
I=VIH
or VIL;
4.5−− 0.36−0.44−0.55V
IO=8mA
VI=VCCor GND5.5−− 0.1−1.0−2.0µA
VI=VCCor GND;
5.5−− 2.0−20−40µA
IO=0
VI=VCC− 2.1 V
4.5 to 5.5 −− 1.35−1.5−1.5mA
other inputs at
VCCor GND;
IO=0
1999 Sep 276
Page 7
Philips SemiconductorsProduct specification
Hex inverting Schmitt trigger74AHC14; 74AHCT14
AC CHARACTERISTICS
Type 74AHC14
GND = 0 V; tr=tf≤3.0 ns.
SYMBOLPARAMETER
VCC= 3.0 to 3.6 V; note 1
t
PHL/tPLH
propagation delay
nA to nY
propagation delay
nA to nY
V
= 4.5 to 5.5 V; note 2
CC
t
PHL/tPLH
propagation delay
nA to nY
propagation delay
nA to nY
Notes
1. Typical values at V
CC
= 3.3 V.
2. Typical values at VCC= 5.0 V.
Type 74AHCT14
GND = 0 V; tr=tf≤3.0 ns.
SYMBOLPARAMETER
TEST CONDITIONST
25−40 to +85−40 to +125
WAVEFORMSC
L
MIN.TYP.MAX. MIN. MAX. MIN.MAX.
amb
(°C)
UNIT
see Figs 4 and 5 15 pF −4.312.81.015.01.016.0ns
50 pF −5.816.31.018.01.020.5ns
see Figs 4 and 5 15 pF −3.28.61.010.01.011.0ns
50 pF −4.210.61.012.01.013.5ns
TEST CONDITIONST
25−40 to +85−40 to +125
WAVEFORMSC
L
MIN.TYP.MAX. MIN. MAX.MIN. MAX.
amb
(°C)
UNIT
VCC= 4.5 to 5.5 V; note 1
t
PHL/tPLH
propagation delay
see Figs 4 and 5 15 pF −4.07.01.08.01.09.0ns
nA to nY
propagation delay
50 pF −5.48.01.09.01.010.0ns
nA to nY
Note
1. Typical values at V
CC
= 5.0 V.
1999 Sep 277
Page 8
Philips SemiconductorsProduct specification
Hex inverting Schmitt trigger74AHC14; 74AHCT14
AC WAVEFORMS
handbook, halfpage
nA INPUT
nY OUTPUT
FAMILY
VI INPUT
REQUIREMENTS
AHCGND to V
CC
V
M
INPUT
50% V
(1)
CC
V
M
OUTPUT
50% V
AHCTGND to 3.0 V1.5 V50% V
Fig.4 The input (nA) to output (nY) propagation delays.
V
(1)
M
t
PHL
CC
CC
(1)
t
PLH
(1)
V
M
MNA209
handbook, full pagewidth
V
CC
V
I
D.U.T.
R
T
TESTS
t
PLH/tPHL
t
PLZ/tPZL
t
PHZ/tPZH
open
V
CC
GND
PULSE
GENERATOR
1
Fig.5 Load circuitry for switching times.
1999 Sep 278
S1
V
CC
open
V
O
1000 Ω
C
L
MNA219
GND
Page 9
Philips SemiconductorsProduct specification
Hex inverting Schmitt trigger74AHC14; 74AHCT14
TRANSFER CHARACTERISTICS WAVEFORMS
handbook, halfpage
1.5
handbook, halfpage
I
CC
(mA)
V
O
V
V
H
V
T+
V
T−
I
MNA207
Fig.6 Transfer characteristics.
MNA411
handbook, halfpage
V
V
O
V
I
T+
V
T−
MNA208
Fig.7Thedefinition of VT+,VT−andVH;where V
and VT− are between limits of 20% and
70%.
MNA412
I
CC
(mA)
5
4
handbook, halfpage
V
H
T+
1
0.5
0
013
2
VI (V)
Fig.8Typical AHC transfer characteristics;
VCC= 3.0 V.
1999 Sep 279
3
2
1
0
05
1234
V
(V)
I
Fig.9Typical AHC transfer characteristics;
VCC= 4.5 V.
Page 10
Philips SemiconductorsProduct specification
Hex inverting Schmitt trigger74AHC14; 74AHCT14
handbook, halfpage
6
I
CC
(mA)
4
2
0
026
4
VI (V)
Fig.10 Typical AHC transfer characteristics;
VCC= 5.5 V.
MNA413
handbook, halfpage
6
I
CC
(mA)
4
2
0
05
1234
Fig.11 Typical AHCT transfer characteristics;
VCC= 4.5 V.
MNA414
V
(V)
I
handbook, halfpage
8
I
CC
(mA)
6
4
2
0
026
4
MNA415
VI (V)
Fig.12 Typical AHCT transfer characteristics;
VCC= 5.5 V.
1999 Sep 2710
handbook, halfpage
R
C
MNA206
1
AHC: f =
AHCT: f = ≈
≈
T10.55 RC
1
T10.60 RC
Fig.13 Relaxation oscillator.
Page 11
Philips SemiconductorsProduct specification
Hex inverting Schmitt trigger74AHC14; 74AHCT14
PACKAGE OUTLINES
SO14: plastic small outline package; 14 leads; body width 3.9 mm
D
c
y
Z
14
pin 1 index
1
e
8
A
2
7
w M
b
p
SOT108-1
E
H
E
A
1
L
detail X
A
X
v M
A
Q
(A )
L
p
A
3
θ
02.55 mm
scale
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
UNIT
mm
inches
Note
1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.
A
max.
1.75
0.069
OUTLINE
VERSION
SOT108-1
A
A
1
0.25
0.10
0.010
0.004
A
2
3
1.45
0.25
1.25
0.057
0.01
0.049
IEC JEDEC EIAJ
076E06S MS-012AB
b
0.49
0.36
0.019
0.014
p
0.25
0.19
0.0100
0.0075
(1)E(1)
cD
8.75
8.55
0.35
0.34
REFERENCES
4.0
3.8
0.16
0.15
1.27
0.050
1999 Sep 2711
eHELLpQZywv θ
1.05
0.041
1.0
0.4
0.039
0.016
0.7
0.25
0.6
0.028
0.010.004
0.024
EUROPEAN
PROJECTION
0.250.1
0.01
6.2
5.8
0.244
0.228
(1)
0.7
0.3
0.028
0.012
ISSUE DATE
95-01-23
97-05-22
o
8
o
0
Page 12
Philips SemiconductorsProduct specification
Hex inverting Schmitt trigger74AHC14; 74AHCT14
TSSOP14: plastic thin shrink small outline package; 14 leads; body width 4.4 mm
D
c
y
Z
14
pin 1 index
8
17
w M
b
e
p
A
2
A
1
E
H
E
L
detail X
SOT402-1
A
X
v M
A
Q
(A )
3
A
θ
L
p
02.55 mm
scale
DIMENSIONS (mm are the original dimensions)
UNITA1A2A
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.
A
max.
0.15
mm
1.10
OUTLINE
VERSION
SOT402-1 MO-153
0.05
0.95
0.80
IEC JEDEC EIAJ
0.25
b
3
p
0.30
0.19
(1)E(2)(1)
cD
0.2
5.1
4.5
0.1
REFERENCES
4.9
4.3
0.65
1999 Sep 2712
eHELLpQZywv θ
6.6
6.2
0.75
0.50
0.4
0.3
EUROPEAN
PROJECTION
0.130.10.21.0
0.72
0.38
ISSUE DATE
94-07-12
95-04-04
o
8
o
0
Page 13
Philips SemiconductorsProduct specification
Hex inverting Schmitt trigger74AHC14; 74AHCT14
SOLDERING
Introduction to soldering surface mount packages
Thistext gives a verybriefinsight to a complextechnology.
A more in-depth account of soldering ICs can be found in
our
“Data Handbook IC26; Integrated Circuit Packages”
(document order number 9398 652 90011).
There is no soldering method that is ideal for all surface
mount IC packages.Wave soldering isnot alwayssuitable
for surface mount ICs, or for printed-circuit boards with
high population densities. In these situations reflow
soldering is often used.
Reflow soldering
Reflow soldering requires solder paste (a suspension of
fine solder particles, flux and binding agent) to be applied
tothe printed-circuit boardbyscreen printing, stencillingor
pressure-syringe dispensing before package placement.
Several methods exist for reflowing; for example,
infrared/convection heating in a conveyor type oven.
Throughput times (preheating,soldering andcooling) vary
between 100 and 200 seconds depending on heating
method.
Typical reflow peak temperatures range from
215 to 250 °C. The top-surface temperature of the
packages should preferable be kept below 230 °C.
• Use a double-wave soldering method comprising a
turbulent wave with high upward pressure followed by a
smooth laminar wave.
• For packages with leads on two sides and a pitch (e):
– larger than or equal to 1.27 mm, the footprint
longitudinal axis is preferred to be parallel to the
transport direction of the printed-circuit board;
– smaller than 1.27 mm, the footprint longitudinal axis
must be parallel to the transport direction of the
printed-circuit board.
The footprint must incorporate solder thieves at the
downstream end.
• Forpackageswith leads onfoursides,the footprint must
be placed at a 45° angle to the transport direction of the
printed-circuit board. The footprint must incorporate
solder thieves downstream and at the side corners.
During placement andbefore soldering,the package must
be fixed with a droplet of adhesive. The adhesive can be
applied by screen printing, pin transfer or syringe
dispensing. The package can be soldered after the
adhesive is cured.
Typical dwell time is 4 seconds at 250 °C.
A mildly-activated flux will eliminate the need for removal
of corrosive residues in most applications.
Manual soldering
Wave soldering
Conventional single wave soldering is not recommended
forsurfacemount devices (SMDs)orprinted-circuitboards
with a high component density, as solder bridging and
non-wetting can present major problems.
To overcome these problems the double-wave soldering
method was specifically developed.
If wave soldering is used the following conditions must be
observed for optimal results:
Fix the component by first soldering two
diagonally-opposite end leads. Use a low voltage (24 V or
less) soldering iron applied to the flat part of the lead.
Contact time must be limited to 10 seconds at up to
300 °C.
When using a dedicated tool, all other leads can be
soldered in one operation within 2 to 5 seconds between
270 and 320 °C.
1999 Sep 2713
Page 14
Philips SemiconductorsProduct specification
Hex inverting Schmitt trigger74AHC14; 74AHCT14
Suitability of surface mount IC packages for wave and reflow soldering methods
1. All surface mount (SMD) packages are moisture sensitive. Depending upon the moisture content, the maximum
temperature (with respect to time) and body size of the package, there is a risk that internal or external package
cracks may occur due to vaporization of the moisture in them (the so called popcorn effect). For details, refer to the
Drypack information in the
2. These packages are not suitable for wave soldering as a solder joint between the printed-circuit board and heatsink
(at bottom version) can not be achieved, and as solder may stick to the heatsink (on top version).
3. If wave soldering is considered, then the package must be placed at a 45° angle to the solder wave direction.
The package footprint must incorporate solder thieves downstream and at the side corners.
4. Wave soldering is only suitable for LQFP, TQFP and QFP packages with a pitch (e) equal to or larger than 0.8 mm;
it is definitely not suitable for packages with a pitch (e) equal to or smaller than 0.65 mm.
5. Wave soldering is only suitable forSSOP andTSSOP packages with a pitch (e) equal to or larger than0.65 mm; it is
definitely not suitable for packages with a pitch (e) equal to or smaller than 0.5 mm.
DEFINITIONS
Data sheet status
Objective specificationThis data sheet contains target or goal specifications for product development.
Preliminary specificationThis data sheet contains preliminary data; supplementary data may be published later.
Product specificationThis data sheet contains final product specifications.
Limiting values
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation
of the device at these or at any other conditions above those given in the Characteristics sections of the specification
is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information
Where application information is given, it is advisory and does not form part of the specification.
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.
1999 Sep 2714
Page 15
Philips SemiconductorsProduct specification
Hex inverting Schmitt trigger74AHC14; 74AHCT14
NOTES
1999 Sep 2715
Page 16
Philips Semiconductors – a w orldwide compan y
Argentina: see South America
Australia: 3 Figtree Drive, HOMEBUSH, NSW 2140,
Indonesia: PT Philips Development Corporation,SemiconductorsDivision,
Gedung Philips, Jl. Buncit Raya Kav.99-100, JAKARTA 12510,
Tel. +62 21 794 0040 ext. 2501, Fax. +62 21 794 0080
United States: 811 East Arques Avenue, SUNNYVALE, CA 94088-3409,
Tel. +1 800 234 7381, Fax. +1 800 943 0087
Uruguay: see South America
Vietnam: see Singapore
Yugoslavia: PHILIPS, Trg N. Pasica 5/v, 11000 BEOGRAD,
Tel. +381 11 62 5344, Fax.+381 11 63 5777
For all other countries apply to: Philips Semiconductors,
International Marketing & Sales Communications, Building BE-p, P.O. Box 218,
5600 MD EINDHOVEN, The Netherlands, Fax. +31 40 27 24825
The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed
without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license
under patent- or other industrial or intellectual property rights.
1999
Internet: http://www.semiconductors.philips.com
68
Printed in The Netherlands245002/02/pp16 Date of release: 1999 Sep 27Document order number: 9397 750 06288
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