DATA SH EET
Product specification
File under Integrated Circuits, IC06 September 1993
INTEGRATED CIRCUITS
74HC/HCT14
Hex inverting Schmitt trigger
For a complete data sheet, please also download:
•The IC06 74HC/HCT/HCU/HCMOS Logic Family Specifications
•The IC06 74HC/HCT/HCU/HCMOS Logic Package Information
•The IC06 74HC/HCT/HCU/HCMOS Logic Package Outlines
September 1993 2
Philips Semiconductors Product specification
Hex inverting Schmitt trigger 74HC/HCT14
FEATURES
•Output capability: standard
•ICC category: SSI
GENERAL DESCRIPTION
The 74HC/HCT14 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.
The 74HC/HCT14 provide six inverting buffers with Schmitt-trigger action. They are capable of transforming slowly
changing input signals into sharply defined, jitter-free output signals.
QUICK REFERENCE DATA
GND = 0 V; Tamb = 25 °C; tr= tf= 6 ns
Notes
1. CPD is used to determine the dynamic power dissipation (PDin µW):
PD= CPD ×VCC2×fi+∑(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
∑(CL×VCC2×fo) = sum of outputs
2. For HC the condition is VI= GND to VCC
For HCT the condition is VI= GND to VCC −1.5 V
ORDERING INFORMATION
See
“74HC/HCT/HCU/HCMOS Logic Package Information”
.
SYMBOL PARAMETER CONDITIONS TYPICAL UNIT
HC HCT
tPHL/ tPLH propagation delay nA to nY CL= 15 pF; VCC = 5 V 12 17 ns
CIinput capacitance 3.5 3.5 pF
CPD power dissipation capacitance per gate notes 1 and 2 7 8 pF
September 1993 3
Philips Semiconductors Product specification
Hex inverting Schmitt trigger 74HC/HCT14
PIN DESCRIPTION
PIN NO. SYMBOL NAME AND FUNCTION
1, 3, 5, 9, 11, 13 1A to 6A data inputs
2, 4, 6, 8, 10, 12 1Y to 6Y data outputs
7 GND ground (0 V)
14 VCC positive supply voltage
Fig.1 Pin configuration. Fig.2 Logic symbol. Fig.3 IEC logic symbol.
Fig.4 Functional diagram. Fig.5 Logic diagram
(one Schmitt trigger).
FUNCTION TABLE
Notes
1. H = HIGH voltage level
L = LOW voltage level
APPLICATIONS
•Wave and pulse shapers
•Astable multivibrators
•Monostable multivibrators
INPUT OUTPUT
nA nY
L
HH
L
September 1993 4
Philips Semiconductors Product specification
Hex inverting Schmitt trigger 74HC/HCT14
DC CHARACTERISTICS FOR 74HC
For the DC characteristics see
“74HC/HCT/HCU/HCMOS Logic Family Specifications”
. Transfer characteristics are
given below.
Output capability: standard
ICC category: SSI
Transfer characteristics for 74HC
Voltages are referenced to GND (ground = 0 V)
AC CHARACTERISTICS FOR 74HC
GND = 0 V; tf= tf= 6 ns; CL= 50 pF
SYMBOL PARAMETER
Tamb (°C)
UNIT
TEST CONDITIONS
74HC VCC
(V) WAVEFORMS+25 −40 to +85 −40 to +125
min. typ. max. min. max. min. max.
VT+ positive-going
threshold 0.7
1.7
2.1
1.18
2.38
3.14
1.5
3.15
4.2
0.7
1.7
2.1
1.5
3.15
4.2
0.7
1.7
2.1
1.5
3.15
4.2
V 2.0
4.5
6.0
Figs 6 and 7
VT−negative-going
threshold 0.3
0.9
1.2
0.52
1.40
1.89
0.90
2.00
2.60
0.3
0.90
1.20
0.90
2.00
2.60
0.30
0.90
1.2
0.90
2.00
2.60
V 2.0
4.5
6.0
Figs 6 and 7
VHhysteresis
(VT+− VT−)0.2
0.4
0.6
0.66
0.98
1.25
1.0
1.4
1.6
0.2
0.4
0.6
1.0
1.4
1.6
0.2
0.4
0.6
1.0
1.4
1.6
V 2.0
4.5
6.0
Figs 6 and 7
SYMBOL PARAMETER
Tamb (°C)
UNIT
TEST CONDITIONS
74HC VCC
(V) WAVEFORMS+25 −40 to +85 −40 to +125
min. typ. max. min. max. min. max.
tPHL/ tPLH propagation delay
nA to nY 41
15
12
125
25
21
155
31
26
190
38
32
ns 2.0
4.5
6.0
Fig.8
tTHL/ tTLH output transition
time 19
7
6
75
15
13
95
19
15
110
22
19
ns 2.0
4.5
6.0
Fig.8
September 1993 5
Philips Semiconductors Product specification
Hex inverting Schmitt trigger 74HC/HCT14
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see
“74HC/HCT/HCU/HCMOS Logic Family Specifications”
. Transfer characteristics are
given below.
Output capability: standard
ICC category: SSI
Note to HCT types
The value of additional quiescent supply current (∆ICC) for a unit load of 1 is given in the family specifications.
To determine ∆ICC per input, multiply this value by the unit load coefficient shown in the table below.
Transfer characteristics for 74HCT
Voltages are referenced to GND (ground = 0 V)
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; tr= tf= 6 ns; CL= 50 pF
INPUT UNIT LOAD COEFFICIENT
nA 0.3
SYMBOL PARAMETER
Tamb (°C)
UNIT
TEST CONDITIONS
74HCT VCC
(V) WAVEFORMS+25 −40 to +85 −40 to +125
min. typ. max. min. max. min. max.
VT+ positive-going
threshold 1.2
1.4 1.41
1.59 1.9
2.1 1.2
1.4 1.9
2.1 1.2
1.4 1.9
2.1 V 4.5
5.5 Figs 6 and 7
VT−negative-going
threshold 0.5
0.6 0.85
0.99 1.2
1.4 0.5
0.6 1.2
1.4 0.5
0.6 1.2
1.4 V 4.5
5.5 Figs 6 and 7
VHhysteresis
(VT+−VT−)0.4
0.4 0.56
0.60 −
−0.4
0.4 −
−0.4
0.4 −
−V 4.5
5.5 Figs 6 and 7
SYMBOL PARAMETER
Tamb (°C)
UNIT
TEST CONDITIONS
74HCT VCC
(V) WAVEFORMS+25 −40 to +85 −40 to +125
min. typ. max. min. max. min. max.
tPHL/ tPLH propagation delay
nA, to nY 20 34 43 51 ns 4.5 Fig.8
tTHL/ tTLH output transition
time 7 15 19 22 ns 4.5 Fig.8
September 1993 6
Philips Semiconductors Product specification
Hex inverting Schmitt trigger 74HC/HCT14
TRANSFER CHARACTERISTIC WAVEFORMS
Fig.6 Transfer characteristic.
Fig.7 Waveforms showing the definition of VT+,
VT−and VH; where VT+ and VT−are
between limits of 20% and 70%.
Fig.8 Typical HC transfer characteristics; VCC = 2 V. Fig.9 Typical HC transfer characteristics; VCC = 4.5 V.
Fig.10 Typical HC transfer characteristics; VCC = 6 V. Fig.11 Typical HCT transfer characteristics; VCC = 4.5 V.
September 1993 7
Philips Semiconductors Product specification
Hex inverting Schmitt trigger 74HC/HCT14
AC WAVEFORMS
Fig.12 Typical HCT transfer characteristics; VCC = 5.5 V.
Fig.13 Waveforms showing the input (nA) to
output (nY) propagation delays and
output transitions times.
(1) HC : VM= 50%; VI= GND to VCC.
HCT: VM= 1.3 V; VI= GND to 3 V.
September 1993 8
Philips Semiconductors Product specification
Hex inverting Schmitt trigger 74HC/HCT14
APPLICATION INFORMATION
The slow input rise and fall times cause additional power
dissipation, this can be calculated using the following
formula:
Pad = fi×(tr×ICCa +t
f×I
CCa)×VCC.
Where:
Average ICCa differs with positive or negative input
transitions, as shown in Figs 14 and 15.
Pad = additional power dissipation (µW)
fi= input frequency (MHz)
tr= input rise time (µs); 10% −90%
tf= input fall time (µs); 10% −90%
ICCa = average additional supply current (µA)
Fig.14 Average ICC for HC Schmitt trigger devices;
linear change of Vibetween 0.1 VCC to
0.9 VCC
Fig.15 Average ICC for HCT Schmitt trigger devices;
linear change of Vibetween 0.1 VCC to
0.9 VCC.
HC/HCT14 used in a relaxation oscillator circuit, see
Fig.16.
Fig.16 Relaxation oscillator using HC/HCT14.
HC : f 1
T
--- 1
0.8 RC
-------------------
≈=
HCT : f 1
T
--- 1
0.67 RC
----------------------
≈=
Note to Application information
All values given are typical unless otherwise specified.
PACKAGE OUTLINES
See
“74HC/HCT/HCU/HCMOS Logic Package Outlines”
.
Philips Semiconductors - PIP - 74HC/HCT14; Hex inverting Schmitt trigger
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General description
The 74HC/HCT14 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.
The 74HC/HCT14 provide six inverting buffers with Schmitt-trigger action. They are capable of transforming
slowly changing input signals into sharply defined, jitter-free output signals.
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Features
● Output capability: standard
● ICC category: SSI
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Datasheet
Type number Title Publication release
date Datasheet status Page
count File
size
(kB)
Datasheet
74HC/HCT14 Hex inverting
Schmitt
trigger
9/1/1993 Product specification 8 71
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PDF
File
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Additional datasheet info
To complete the device datasheet with package and family information, also download the following PDF files.
The "Logic Package Information" document is required to determine in which package(s) this device is available.
Document Description
1
Download
PDF
File
HCT_FAMILY_SPECIFICATIONS HC/T Family Specifications, The IC06 74HC/HCT/HCMOS Logic
Family Specifications
2
Download
PDF
File
HCT_PACKAGE_INFO HC/T Package Info, The IC06 74HC/HCT/HCMOS Logic Package
Information
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Philips Semiconductors - PIP - 74HC/HCT14; Hex inverting Schmitt trigger
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HCT_PACKAGE_OUTLINES HC/T Package Outlines, The IC06 74HC/HCT/HCMOS Logic
Package Outlines
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Parametrics
Type
number Package Description Propagation
Delay(ns) Voltage No.
of
Pins
Power
Dissipation
Considerations
Logic
Switching
Levels
Output
Drive
Capability
74HC14D SOT108-1
(SO14)
Hex Inverter
Schmitt-
Trigger 15 5 Volts
+14 Low Power or
Battery
Applications CMOS Low
74HC14DB SOT337-1
(SSOP14)
Hex Inverter
Schmitt-
Trigger 15 5 Volts
+14 Low Power or
Battery
Applications CMOS Low
74HC14N SOT27-1
(DIP14)
Hex Inverter
Schmitt-
Trigger 15 5 Volts
+14 Low Power or
Battery
Applications CMOS Low
74HC14PW SOT402-1
(TSSOP14)
Hex Inverter
Schmitt-
Trigger 15 5 Volts
+14 Low Power or
Battery
Applications CMOS Low
74HCT14D SOT108-1
(SO14)
Hex Inverter
Schmitt-
Trigger;
TTL
Enabled
15 5 Volts
+14 Low Power or
Battery
Applications TTL Low
74HCT14DB SOT337-1
(SSOP14)
Hex Inverter
Schmitt-
Trigger;
TTL
Enabled
15 5 Volts
+14 Low Power or
Battery
Applications TTL Low
74HCT14N SOT27-1
(DIP14)
Hex Inverter
Schmitt-
Trigger;
TTL
Enabled
15 5 Volts
+14 Low Power or
Battery
Applications TTL Low
74HCT14PW SOT402-1
(TSSOP14)
Hex Inverter
Schmitt-
Trigger;
TTL
Enabled
15 5 Volts
+14 Low Power or
Battery
Applications TTL Low
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Products, packages, availability and ordering
Type
number North
American
type number
Ordering code
(12NC) Marking/Packing
Download
PDF
File
Discretes
packing info
Package Device status Buy online
74HC14D 74HC14D 9337 144 00652 Standard Marking
* Bulk Pack,
CECC
SOT108-1
(SO14) Full production
-
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Philips Semiconductors - PIP - 74HC/HCT14; Hex inverting Schmitt trigger
74HC14D-T 9337 144 00653 Standard Marking
* Reel Pack,
SMD, 13", CECC
SOT108-1
(SO14) Full production
-
74HC14DB 74HC14DB 9351 744 60112 Standard Marking
* Bulk Pack SOT337-1
(SSOP14) Full production
-
74HC14DB-
T 9351 744 60118 Standard Marking
* Reel Pack,
SMD, 13"
SOT337-1
(SSOP14) Full production
-
74HC14N 74HC14N 9336 690 40652 Standard Marking
* Bulk Pack,
CECC
SOT27-1
(DIP14) Full production
-
74HC14PW 74HC14PW 9351 835 30112 Standard Marking
* Bulk Pack
SOT402-1
(TSSOP14)
Full production
-
74HC14PW-
T 9351 835 30118 Standard Marking
* Reel Pack,
SMD, 13"
SOT402-1
(TSSOP14)
Full production
-
74HCT14D 74HCT14D 9337 144 40652 Standard Marking
* Bulk Pack,
CECC
SOT108-1
(SO14) Full production
-
74HCT14D-
T 9337 144 40653 Standard Marking
* Reel Pack,
SMD, 13", CECC
SOT108-1
(SO14) Full production
-
74HCT14DB 74HCT14DB 9351 744 70112 Standard Marking
* Bulk Pack SOT337-1
(SSOP14) Full production
-
74HCT14DB-
T 9351 744 70118 Standard Marking
* Reel Pack,
SMD, 13"
SOT337-1
(SSOP14) Full production
-
74HCT14N 74HCT14N 9336 691 60652 Standard Marking
* Bulk Pack,
CECC
SOT27-1
(DIP14) Full production
-
74HCT14PW 74HCT14PW 9351 835 40112 Standard Marking
* Bulk Pack
SOT402-1
(TSSOP14)
Full production
-
74HCT14PW-
T 9351 835 40118 Standard Marking
* Reel Pack,
SMD, 13"
SOT402-1
(TSSOP14)
Full production
-
Products in the above table are all in production. Some variants are discontinued; click here for information on
these variants.
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Similar products
Products
similar
to
74HC/HCT14
74HC/HCT14 links to the similar products page containing an overview of products that are similar in
function or related to the type number(s) as listed on this page. The similar products page includes products from
the same catalog tree(s), relevant selection guides and products from the same functional category.
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Philips Semiconductors - PIP - 74HC/HCT14; Hex inverting Schmitt trigger
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Support & tools
Download
PDF
File
HC/T Family Specifications, The IC06 74HC/HCT/HCMOS Logic Family Specifications(date 01-Mar-98)
Download
PDF
File
HC/T User Guide(date 01-Nov-97)
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