74VHC14 Hex Schmitt Inverter
June 1993
Revised April 1999
74VHC14
Hex Schmitt Inverter
General Description
The VHC14 is an advanced high speed CMOS Hex
Schmitt Inverter fabricated with silicon gate CMOS technol-
ogy. It achieves the high speed operation similar to equiva-
lent Bipolar Schottky TTL while maintaining the CMOS low
power dissipation. Pin configuration and function are the
same as the VHC04 but the inputs have hysteresis
between the positive-going and negative-going input
thresholds, which are capable of transforming slowly
changing input signals into sharply defined, jitter-free out-
put signals, thus providing greater noise margin than con-
ventional inverters.
An input protection circuit ensures that 0V to 7V can be
applied to the input pins without regard to the supply volt-
age. This device can be used to interface 5V to 3V systems
and two supply systems such as battery back up. This cir-
cuit prevents device destruction due to mismatched supply
and input voltages.
Features
s
High Speed: t
PD
=
5.5 ns (typ) at V
CC
=
5V
s
Low power dissipation: I
CC
=
2
µA
(Max) at T
A
=
25°C
s
High noise immunity: V
NIH
=
V
NIL
=
28% V
CC
(Min)
s
Power down protection is provided on all inputs
s
Low noise: V
OLP
=
0.8V (Max)
s
Pin and function compatible with 74HC14
Ordering Code:
Order Number
74VHC14M
74VHC14SJ
74VHC14MTC
74VHC14N
Package Number
M14A
M14D
MTC14
N14A
Package Description
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow
14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Surface mount packages are also available on Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbol
IEEE/IEC
Connection Diagram
Pin Descriptions
Pin Names
A
n
O
n
Description
Inputs
Outputs
Truth Table
A
L
H
O
H
L
© 1999 Fairchild Semiconductor Corporation
DS011617.prf
www.fairchildsemi.com
74VHC14
Absolute Maximum Ratings
(Note 1)
Supply Voltage (V
CC
)
DC Input Voltage (V
IN
)
DC Output Voltage (V
OUT
)
Input Diode Current (I
IK
)
Output Diode Current (I
OK
)
DC Output Current (I
OUT
)
DC V
CC
/GND Current (I
CC
)
Storage Temperature (T
STG
)
Lead Temperature (T
L
)
Soldering (10 seconds)
260°C
−0.5V
to
+7.0V
−0.5V
to
+7.0V
−0.5V
to V
CC
+
0.5V
−20
mA
±20
mA
±25
mA
±50
mA
−65°C
to
+150°C
Recommended Operating
Conditions
(Note 2)
Supply Voltage (V
CC
)
Input Voltage (V
IN
)
Output Voltage (V
OUT
)
Operating Temperature (T
OPR
)
+2.0V
to
+5.5V
0V to
+5.5V
0V to V
CC
−40°C
to
+85°C
Note 1:
Absolute maximum ratings are values beyond which the device
may be damaged or have its useful life impaired. The data book specifica-
tions should be met, without exception, to ensure that the system design is
reliable over its power supply, temperature, and output/input loading vari-
ables. Fairchild does not recommend operation outside databook specifica-
tions.
Note 2:
Unused inputs must be held HIGH or LOW. They may not float.
DC Electrical Characteristics
Symbol
V
P
Parameter
Positive Threshold Voltage
V
CC
3.0
4.5
5.5
V
N
Negative Threshold Voltage
3.0
4.5
5.5
V
H
Hysteresis Voltage
3.0
4.5
5.5
V
OH
HIGH Level Output Voltage
2.0
3.0
4.5
3.0
4.5
V
OL
LOW Level Output Voltage
2.0
3.0
4.5
3.0
4.5
I
IN
I
CC
Input Leakage Current
Quiescent Supply Current
0–5.5
5.5
0.90
1.35
1.65
0.30
0.40
0.50
1.9
2.9
4.4
2.58
3.94
0.0
0.0
0.0
0.1
0.1
0.1
0.36
0.36
±0.1
2.0
2.0
3.0
4.5
1.20
1.40
1.60
T
A
=
25°C
Min
Typ
Max
2.20
3.15
3.85
0.90
1.35
1.65
0.30
0.40
0.50
1.9
2.9
4.4
2.48
3.80
0.1
0.1
0.1
0.44
0.44
±1.0
20.0
V
µA
µA
I
OL
=
4 mA
I
OL
=
8 mA
V
IN
=
5.5V or GND
V
IN
=
V
CC
or GND
V
V
V
IN
=
V
IH
I
OL
=
50
µA
I
OH
= −4
mA
I
OH
= −8
mA
V
1.20
1.40
1.60
V
IN
=V
IL
I
OH
= −50 µA
V
V
T
A
= −40°C
to
+85°C
Min
Max
2.20
3.15
3.85
V
Units
Conditions
Noise Characteristics
Symbol
V
OLP
(Note 3)
V
OLV
(Note 3)
V
IHD
(Note 3)
V
ILD
(Note 3)
Parameter
Quiet Output Maximum Dynamic V
OL
Quiet Output Minimum Dynamic V
OL
Minimum HIGH Level Dynamic Input Voltage
Maximum LOW Level Dynamic Input Voltage
V
CC
5.0
5.0
5.0
5.0
T
A
=
25°C
Typ
0.4
−0.4
Limits
0.8
−0.8
3.5
1.5
V
V
V
V
C
L
=
50 pF
C
L
=
50 pF
C
L
=
50 pF
C
L
=
50 pF
Units
Conditions
Note 3:
Parameter guaranteed by design.
www.fairchildsemi.com
2
74VHC14
Physical Dimensions
inches (millimeters) unless otherwise noted
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow
Package Number M14A
14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
Package Number M14D
www.fairchildsemi.com
4
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
