1
Data sheet acquired from Harris Semiconductor
SCHS129A
Features
Unlimited Input Rise and Fall Times
Exceptionally High Noise Immunity
Fanout (Over Temperature Range)
- Standard Outputs. . . . . . . . . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
Wide Operating T emperature Range . . . -55oC to 125oC
Balanced Propagation Delay and Transition Times
Significant Power Reduction Compared to LSTTL
Logic ICs
HC Types
- 2V to 6V Operation
- High Noise Immunity: NIL = 30%, NIH = 30% of VCC
at VCC = 5V
HCT Types
- 4.5V to 5.5V Operation
- Direct LSTTL Input Logic Compatibility,
VIL= 0.8V (Max), VIH = 2V (Min)
- CMOS Input Compatibility, Il1µA at VOL, VOH
Description
The ’HC14 and ’HCT14 each contain 6 inverting Schmitt
Triggers in one package.
Pinout
CD54HC14, CD54HCT14
(CERDIP)
CD74HC14, CD74HCT14
(PDIP, SOIC)
TOP VIEW
Ordering Information
PART NUMBER TEMP. RANGE
(oC) PACKAGE
CD54HC14F -55 to 125 14 Ld CERDIP
CD54HC14F3A -55 to 125 14 Ld CERDIP
CD74HC14E -55 to 125 14 Ld PDIP
CD74HC14M -55 to 125 14 Ld SOIC
CD54HCT14F -55 to 125 14 Ld CERDIP
CD54HCT14F3A -55 to 125 14 Ld CERDIP
CD74HCT14E -55 to 125 14 Ld PDIP
CD74HCT14M -55 to 125 14 Ld SOIC
NOTES:
1. When ordering, use the entire part number. Add the suffix 96 to
obtain the variant in the tape and reel.
2. Die is available which meets all electrical specifications. Please
contact your local TI sales office or customer service for ordering
information.
1A
1Y
2A
2Y
3A
3Y
GND
VCC
6A
6Y
5A
5Y
4A
4Y
1
2
3
4
5
6
7
14
13
12
11
10
9
8
January 1998 - Revised May 2000
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright © 2000, Texas Instruments Incorporated
CD54/74HC14,
CD54/74HCT14
High Speed CMOS Logic
Hex Inverting Schmitt Trigger
[ /Title
(CD74H
C14,
CD74H
CT14)
/
Subject
(High
Speed
CMOS
Logic
Hex
Invert-
2
Functional Diagram
Logic Diagram
TRUTH TABLE
INPUT (A) OUTPUT (Y)
LH
HL
NOTE:
H= High Level
L= Low Level
1A
2A
4A
5A
6A
1
3
5
9
11
13
2
4
6
8
1Y
4Y
5Y
3Y
2Y
10
12 6Y
3A
GND = 7
VCC = 14
nA nY
CD54/74HC14, CD54/74HCT14
3
FIGURE 1. HYSTERESIS DEFINITION, CHARACTERISTIC, AND TEST SETUP
VOVH
VT-V
T+
VI
VH = VT+ - VT-
VCC
VI
GND
VCC
VO
GND
VT+V
T-
VH
CD54/74HC14, CD54/74HCT14
4
Absolute Maximum Ratings Thermal Information
DC Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 7V
DC Input Diode Current, IIK
For VI < -0.5V or VI > VCC + 0.5V. . . . . . . . . . . . . . . . . . . . . .±20mA
DC Output Diode Current, IOK
For VO < -0.5V or VO > VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±20mA
DC Drain Current, per Output, IO
For -0.5V < VO < VCC +0.5V . . . . . . . . . . . . . . . . . . . . . . . . . .±25mA
DC Output Source or Sink Current per Output Pin, IO
For VO > -0.5V or VO < VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±25mA
DC VCC or Ground Current, ICC . . . . . . . . . . . . . . . . . . . . . . . . .±50mA
Operating Conditions
Temperature Range, TA . . . . . . . . . . . . . . . . . . . . . . -55oC to 125oC
Supply Voltage Range, VCC
HC Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2V to 6V
HCT Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.5V to 5.5V
DC Input or Output Voltage, VI, VO . . . . . . . . . . . . . . . . . 0V to VCC
Input Rise and Fall Time, tr, tf
2V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100ms (Max)
4.5V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100ms (Max)
6V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100ms (Max)
Thermal Resistance (Typical, Note 3) θJA (oC/W) θJC (oC/W)
PDIP Package . . . . . . . . . . . . . . . . . . . 90 -
CERDIP Package . . . . . . . . . . . . . . . . 130 55
SOIC Package. . . . . . . . . . . . . . . . . . . 120 -
Maximum Junction Temperature (Hermetic P ac kage or Die) . . . 175oC
Maximum Junction Temperature (Plastic Package) . . . . . . . . 150oC
Maximum Storage Temperature Range . . . . . . . . . .-65oC to 150oC
Maximum Lead Temperature (Soldering 10s). . . . . . . . . . . . . 300oC
(SOIC - Lead Tips Only)
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTE:
3. θJA is measured with the component mounted on an evaluation PC board in free air.
DC Electrical Specifications
PARAMETER SYMBOL
TEST
CONDITIONS
VCC (V)
25oC -40oC TO 85oC -55oC TO 125oC
UNITSVI(V) IO(mA) MIN MAX MIN MAX MIN MAX
HC TYPES
Input Switch Points VT+ - - 2 0.7 1.5 0.7 1.5 0.7 1.5 V
4.5 1.7 3.15 1.7 3.15 1.7 3.15 V
6 2.1 4.2 2.1 4.2 2.1 4.2 V
VT- - - 2 0.3 1.0 0.3 1.0 0.3 1.0 V
4.5 0.9 2.2 0.9 2.2 0.9 2.2 V
6 1.2 3.0 1.2 3.0 1.2 3.0 V
VH- - 2 0.2 1.0 0.2 1.0 0.2 1.0 V
4.5 0.4 1.4 0.4 1.4 0.4 1.4 V
6 0.6 1.6 0.6 1.6 0.6 1.6 V
High Level Output
Voltage CMOS Loads VOH VT- or
VT+-0.02 2 1.9 - 1.9 - 1.9 - V
-0.02 4.5 4.4 - 4.4 - 4.4 - V
-0.02 6 5.9 - 5.9 - 5.9 - V
High Level Output
Voltage TTL Loads --------V
-4 4.5 3.98 - 3.84 - 3.7 - V
-5.2 6 5.48 - 5.34 - 5.2 - V
CD54/74HC14, CD54/74HCT14
5
LowLevelOutputVoltage
CMOS Loads VOL VIH or
VIL 0.02 2 - 0.1 - 0.1 - 0.1 V
0.02 4.5 - 0.1 - 0.1 - 0.1 V
0.02 6 - 0.1 - 0.1 - 0.1 V
LowLevel OutputVoltage
TTL Loads --------V
4 4.5 - 0.26 - 0.33 - 0.4 V
5.2 6 - 0.26 - 0.33 - 0.4 V
Input Leakage Current IIVCC or
GND -6-±0.1 - ±1-±1µA
Quiescent Device
Current ICC VCC or
GND 06-2-20-40µA
HCT TYPES
Input Switch Points VT+ - - 4.5 1.2 1.9 1.2 1.9 1.2 1.9 V
5.5 1.4 2.1 1.4 2.1 1.4 2.1 V
VT- 4.5 0.5 1.2 0.5 1.2 0.5 1.2 V
5.5 0.6 1.4 0.6 1.4 0.6 1.4 V
VH4.5 0.4 1.4 0.4 1.4 0.4 1.4 V
5.5 0.4 1.5 0.4 1.5 0.4 1.5 V
High Level Output
Voltage CMOS Loads VOH VIH or
VIL -0.02 4.5 4.4 - 4.4 - 4.4 - V
High Level Output
Voltage TTL Loads -4 4.5 3.98 - 3.84 - 3.7 - V
LowLevelOutputVoltage
CMOS Loads VOL VIH or
VIL 0.02 4.5 - 0.1 - 0.1 - 0.1 V
LowLevel OutputVoltage
TTL Loads 4 4.5 - 0.26 - 0.33 - 0.4 V
Input Leakage Current IIVCC
and
GND
- 5.5 - ±0.1 - ±1-±1µA
Quiescent Device
Current ICC VCC or
GND 0 5.5 - 2 - 20 - 40 µA
Additional Quiescent
Device Current Per Input
Pin: 1 Unit Load
ICC
(Note 4) VCC
- 2.1 - 4.5 to
5.5 - 360 - 450 - 490 µA
NOTE:
4. For dual-supply systems theoretical worst case (VI = 2.4V, VCC = 5.5V) specification is 1.8mA.
DC Electrical Specifications (Continued)
PARAMETER SYMBOL
TEST
CONDITIONS
VCC (V)
25oC -40oC TO 85oC -55oC TO 125oC
UNITSVI(V) IO(mA) MIN MAX MIN MAX MIN MAX
HCT Input Loading Table
INPUT UNIT LOADS
nA 0.6
NOTE: Unit Load is ICC limit specified in DC Electrical Specifica-
tions table, e.g., 360µA max at 25oC.
CD54/74HC14, CD54/74HCT14
6
Switching Specifications Input tr, tf = 6ns
PARAMETER SYMBOL TEST
CONDITIONS VCC
(V)
25oC -40oC TO 85oC -55oC TO 125oC
UNITSMIN TYP MAX MIN MAX MIN MAX
HC TYPES
Propagation Delay,
A to Y tPLH, tPHL CL= 50pF 2 - - 135 - 170 - 205 ns
CL= 50pF 4.5 - - 27 - 34 - 41 ns
CL= 15pF 5 - 11 - ----ns
CL= 50pF 6 - - 23 - 29 - 35 ns
Output Transition Times tTLH, tTHL CL= 50pF 2 - - 75 - 95 18 110 ns
4.5 - - 15 - 19 - 22 ns
6 - - 13 - 16 - 19 ns
Input Capacitance CI- - - - 10 - 10 - 10 pF
Power Dissipation Capacitance
(Notes 5, 6) CPD - 5-20-----pF
HCT TYPES
Propagation Delay,
A to Y tPLH, tPHL CL= 50pF 4.5 - - 38 - 48 - 57 ns
CL= 15pF 5 - 16 - ----ns
Output Transition Times tTLH, tTHL CL= 50pF 4.5 - - 15 - 19 - 22 ns
Input Capacitance CI- - - - 10 - 10 - 10 pF
Power Dissipation Capacitance
(Notes 5, 6) CPD - 5-20-----pF
NOTES:
5. CPD is used to determine the dynamic power consumption, per inverter.
6. PD = VCC2 fi (CPD + CL) where fi = input frequency, CL = output load capacitance, VCC = supply voltage.
Test Circuits and Waveforms
FIGURE 2. HC TRANSITION TIMES AND PROPAGATION
DELAY TIMES, COMBINATION LOGIC FIGURE 3. HCT TRANSITION TIMES AND PROPAGATION
DELAY TIMES, COMBINATION LOGIC
tPHL tPLH
tTHL tTLH
90%
50%
10%
50%
10%
INVERTING
OUTPUT
INPUT
GND
VCC
tr = 6ns tf = 6ns
90%
tPHL tPLH
tTHL tTLH
2.7V
1.3V
0.3V
1.3V
10%
INVERTING
OUTPUT
INPUT
GND
3V
tr = 6ns tf = 6ns
90%
CD54/74HC14, CD54/74HCT14
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pertaining to warranty, patent infringement, and limitation of liability.
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accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
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performed, except those mandated by government requirements.
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Copyright 2000, Texas Instruments Incorporated