74F14 Hex Inverter Schmitt Trigger
March 1988
Revised November 2005
74F14
Hex Inverter Schmitt Trigger
General Description
The 74F14 contains six logic inverters which accept stan-
dard TTL input signals and provide standard TTL output
levels. They are capable of transforming slowly changing
input signals into sharply defined, jitter-free output signals.
In addition, they have a greater noise margin than conven-
tional inverters.
Each circuit contains a Schmitt trigger followed by a Dar-
lington level shifter and a phase splitter driving a TTL
totem-pole output. The Schmitt trigger uses positive feed
back to effectively speed-up slow input transition, and pro-
vide different input threshold voltages for positive and neg-
ative-going transitions. This hysteresis between the
positive-going and negative-going input thresholds (typi-
cally 800 mV) is determined internally by resistor ratios and
is essentially insensitive to temperature and supply voltage
variations.
Ordering Code:
Order Number
74F14SC
74F14SJ
74F14PC
Package Number
M14A
M14D
N14A
Package Description
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
Pb-Free 14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbol
IEEE/IEC
Connection Diagram
Unit Loading/Fan Out
U.L.
Pin Names Description
I
n
O
n
Input
Output
1.0/1.0
50/33.3
Input I
IH
/I
IL
HIGH/LOW Output I
OH
/I
OL
20
µ
A/
−
0.6 mA
Function Table
Input
A
L
H
H
=
HIGH Voltage Level
L
=
LOW Voltage Level
Output
O
H
L
−
1 mA/20 mA
© 2005 Fairchild Semiconductor Corporation
DS009461
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74F14
Absolute Maximum Ratings
(Note 1)
Storage Temperature
Ambient Temperature under Bias
Junction Temperature under Bias
V
CC
Pin Potential to Ground Pin
Input Voltage (Note 2)
Input Current (Note 2)
Voltage Applied to Output
in HIGH State (with V
CC
=
0V)
Standard Output
3-STATE Output
Current Applied to Output
in LOW State (Max)
ESD Last Passing Voltage (Min)
twice the rated I
OL
(mA)
4000V
−
65
°
C to
+
150
°
C
−
55
°
C to
+
125
°
C
−
55
°
C to
+
175
°
C
−
0.5V to
+
7.0V
−
0.5V to
+
7.0V
−
30 mA to
+
5.0 mA
Recommended Operating
Conditions
Free Air Ambient Temperature
Supply Voltage
0
°
C to
+
70
°
C
+
4.5V to
+
5.5V
−
0.5V to V
CC
−
0.5V to
+
5.5V
Note 1:
Absolute maximum ratings are values beyond which the device
may be damaged or have its useful life impaired. Functional operation
under these conditions is not implied.
Note 2:
Either voltage limit or current limit is sufficient to protect inputs.
DC Electrical Characteristics
Symbol
V
T
+
V
T
−
∆V
T
V
CD
V
OH
V
OL
I
IH
I
BVI
I
CEX
V
ID
I
OD
I
IL
I
OS
I
CCH
I
CCL
Parameter
Positive-Going Threshold
Negative-Going Threshold
Hysteresis (V
T
+
–V
T
−
)
Input Clamp Diode Voltage
Output HIGH
Voltage
Output LOW
Voltage
Input HIGH
Current
Input HIGH Current
Breakdown Test
Output HIGH
Leakage Current
Input Leakage
Test
Output Leakage
Circuit Current
Input LOW Current
Output Short-Circuit Current
Power Supply Current
Power Supply Current
−60
4.75
3.75
−0.6
−150
25
25
10% V
CC
5% V
CC
10% V
CC
2.5
2.7
0.5
5.0
7.0
50
Min
1.5
0.7
0.4
Typ
1.7
0.9
0.8
−1.2
Max
2.0
1.1
Units
V
V
V
V
V
V
µA
µA
µA
V
µA
mA
mA
mA
mA
V
CC
5.0V
5.0V
5.0V
Min
Min
Min
Max
Max
Max
Max
0.0
Max
Max
Max
Max
I
IN
= −18
mA
I
OH
= −1
mA
I
OH
= −1
mA
I
OL
=
20 mA
V
IN
=
2.7V
V
IN
=
7.0V
V
OUT
=
V
CC
I
ID
=
1.9
µA
All Other Pins Grounded
V
IOD
=
150 mV
All Other Pins Grounded
V
IN
=
0.5V
V
OUT
=
0V
V
O
=
HIGH
V
O
=
LOW
Conditions
AC Electrical Characteristics
T
A
= +25°C
Symbol
Parameter
V
CC
= +5.0V
C
L
=
50 pF
Min
t
PLH
t
PHL
Propagation Delay
I
n
→O
n
4.0
3.5
Max
10.5
8.5
T
A
= −55°C
to
+125°C
V
CC
= +5.0V
C
L
=
50 pF
Min
4.0
3.5
Max
13.0
10.0
T
A
=
0°C to
+70°C
V
CC
= +5.0V
C
L
=
50 pF
Min
4.0
3.5
Max
11.5
9.0
ns
Units
www.fairchildsemi.com
2
74F14
Physical Dimensions
inches (millimeters) unless otherwise noted
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
Package Number M14A
3
www.fairchildsemi.com
74F14
Physical Dimensions
inches (millimeters) unless otherwise noted (Continued)
Pb-Free 14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
Package Number M14D
www.fairchildsemi.com
4
74F14 Hex Inverter Schmitt Trigger
Physical Dimensions
inches (millimeters) unless otherwise noted (Continued)
14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
Package Number N14A
Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and
Fairchild reserves the right at any time without notice to change said circuitry and specifications.
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FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD
SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the
body, or (b) support or sustain life, and (c) whose failure
to perform when properly used in accordance with
instructions for use provided in the labeling, can be rea-
sonably expected to result in a significant injury to the
user.
5
2. A critical component in any component of a life support
device or system whose failure to perform can be rea-
sonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
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