MM74HC14 — Hex Inverting Schmitt Trigger
February 2008
MM74HC14
Hex Inverting Schmitt Trigger
Features
■
Typical propagation delay: 13ns
■
Wide power supply range: 2V–6V
■
Low quiescent current: 20µA maximum (74HC Series)
■
Low input current: 1µA maximum
■
Fanout of 10 LS-TTL loads
■
Typical hysteresis voltage: 0.9V at V
CC
=
4.5V
General Description
The MM74HC14 utilizes advanced silicon-gate CMOS
technology to achieve the low power dissipation and
high noise immunity of standard CMOS, as well as the
capability to drive 10 LS-TTL loads.
The 74HC logic family is functionally and pinout compat-
ible with the standard 74LS logic family. All inputs are
protected from damage due to static discharge by inter-
nal diode clamps to V
CC
and ground.
Ordering Information
Package
Order Number Number
MM74HC14M
MM74HC14SJ
MM74HC14MTC
MM74HC14N
M14A
M14D
MTC14
N14A
Package Description
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 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
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering number.
All packages are lead free per JEDEC: J-STD-020B standard.
Connection Diagram
Pin Assignments for DIP, SOIC, SOP and TSSOP
Logic Diagram
Top View
©1983 Fairchild Semiconductor Corporation
MM74HC14 Rev. 1.4.0
www.fairchildsemi.com
MM74HC14 — Hex Inverting Schmitt Trigger
Absolute Maximum Ratings
(1)
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability.
The absolute maximum ratings are stress ratings only.
Symbol
V
CC
V
IN
V
OUT
I
IK
, I
OK
I
OUT
I
CC
T
STG
P
D
Supply Voltage
DC Input Voltage
DC Output Voltage
Clamp Diode Current
DC Output Current, per pin
Parameter
Rating
–0.5 to +7.0V
–1.5 to V
CC
+1.5V
–0.5 to V
CC
+0.5V
±20mA
±25mA
±50mA
–65°C to +150°C
600mW
500mW
260°C
DC V
CC
or GND Current, per pin
Storage Temperature Range
Power Dissipation
Note 2
S.O. Package only
Lead Temperature (Soldering 10 seconds)
T
L
Notes:
1. Unless otherwise specified all voltages are referenced to ground.
2. Power Dissipation temperature derating — plastic “N” package: –12mW/°C from 65°C to 85°C.
Recommended Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended
operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not
recommend exceeding them or designing to absolute maximum ratings.
Symbol
V
CC
V
IN
, V
OUT
T
A
Supply Voltage
DC Input or Output Voltage
Parameter
Min.
2
0
–55
Max.
6
V
CC
+125
Units
V
V
°C
Operating Temperature Range
©1983 Fairchild Semiconductor Corporation
MM74HC14 Rev. 1.4.0
www.fairchildsemi.com
2
MM74HC14 — Hex Inverting Schmitt Trigger
DC Electrical Characteristics
(3)
T
A
=
25°C
Symbol
V
T+
T
A
=
–40°C
to 85°C
1.0
2.0
3.0
1.5
3.15
4.2
0.3
0.9
1.2
1.0
2.2
3.0
0.2
0.4
0.5
1.0
1.4
1.5
1.9
4.4
5.9
3.84
5.34
0.1
0.1
0.1
0.33
0.33
±1.0
20
T
A
=
–55°C
to 125°C
Units
V
1.0
2.0
3.0
1.5
3.15
4.2
0.3
0.9
1.2
1.0
2.2
3.0
0.2
0.4
0.5
1.0
1.4
1.5
1.9
4.4
5.9
3.7
5.2
0.1
0.1
0.1
0.4
0.4
±1.0
40
µA
µA
V
V
V
V
Parameter
Positive Going
Threshold Voltage
V
CC
(V)
2.0
4.5
6.0
2.0
4.5
6.0
Conditions
Minimum
Typ.
1.2
2.7
3.2
1.0
2.0
3.0
1.5
3.15
4.2
0.3
0.9
1.2
1.0
2.2
3.0
0.2
0.4
0.5
1.0
1.4
1.5
1.9
4.4
5.9
3.98
5.48
0.1
0.1
0.1
0.26
0.26
±0.1
2.0
Guaranteed Limits
Maximum
1.2
2.7
3.2
V
T–
Negative Going
Threshold Voltage
2.0
4.5
6.0
2.0
4.5
6.0
Minimum
0.7
1.8
2.2
Maximum
0.7
1.8
2.2
V
H
Hysteresis Voltage
2.0
4.5
6.0
2.0
4.5
6.0
Minimum
0.5
0.9
1.0
Maximum
0.5
0.9
1.0
V
OH
Minimum HIGH
Level Output
Voltage
2.0
4.5
6.0
4.5
6.0
V
IN
=
V
IL
,
|I
OUT
|
=
20µA
V
IN
=
V
IL
,
|I
OUT
|
=
4.0mA
V
IN
=
V
IL
,
|I
OUT
|
=
5.2mA
V
IN
=
V
IH
,
|I
OUT
|
=
20µA
V
IN
=
V
IH
,
|I
OUT
|
=
4.0mA
V
IN
=
V
IH
,
|I
OUT
|
=
5.2mA
V
IN
=
V
CC
or GND
V
IN
=
V
CC
or GND,
I
OUT
=
0µA
2.0
4.5
6.0
4.2
5.7
0
0
0
0.2
0.2
V
OL
Maximum LOW
Level Output
Voltage
2.0
4.5
6.0
4.5
6.0
I
IN
I
CC
Maximum Input
Current
Maximum
Quiescent Supply
Current
6.0
6.0
Note:
3. For a power supply of 5V ±10% the worst case output voltages (V
OH
, and V
OL
) occur for HC at 4.5V. Thus the 4.5V
values should be used when designing with this supply. Worst case V
IH
and V
IL
occur at V
CC
=
5.5V and 4.5V
respectively. (The V
IH
value at 5.5V is 3.85V.) The worst case leakage current (I
IN
, I
CC
, and I
OZ
) occur for CMOS at
the higher voltage and so the 6.0V values should be used.
©1983 Fairchild Semiconductor Corporation
MM74HC14 Rev. 1.4.0
www.fairchildsemi.com
3
MM74HC14 — Hex Inverting Schmitt Trigger
AC Electrical Characteristics
V
CC
=
5V, T
A
=
25°C, C
L
=
15pF, t
r
=
t
f
=
6ns
Symbol
t
PHL
, t
PLH
Parameter
Maximum Propagation Delay
Conditions
Typ.
12
Guaranteed
Limit
22
Units
ns
AC Electrical Characteristics
V
CC
=
2.0V to 6.0V, C
L
=
50pF, t
r
=
t
f
=
6ns (unless otherwise specified)
T
A
=
25°C
Symbol
t
PHL
, t
PLH
T
A
=
–40°C
to 85°C
156
31
26
95
19
16
T
A
=
–55°C
to 125°C
Units
ns
188
38
32
110
22
19
pF
ns
Parameter
Maximum
Propagation Delay
V
CC
(V)
2.0
4.5
6.0
2.0
4.5
6.0
Conditions
Typ.
60
13
11
30
8
7
125
25
21
75
15
13
Guaranteed Limits
t
TLH
, t
THL
Maximum Output
Rise and Fall Time
C
PD
C
IN
Power Dissipation
Capacitance
(4)
Maximum Input
Capacitance
(per gate)
27
5
10
10
10
pF
Note:
4. C
PD
determines the no load dynamic power consumption, P
D
=
C
PD
V
CC2
f + I
CC
V
CC
, and the no load dynamic
current consumption, I
S
=
C
PD
V
CC
f + I
CC
.
©1983 Fairchild Semiconductor Corporation
MM74HC14 Rev. 1.4.0
www.fairchildsemi.com
4
MM74HC14 — Hex Inverting Schmitt Trigger
Typical Performance Characteristics
Input Threshold, V
T
+, V
T
–, vs Power Supply Voltage
Propagation Delay vs. Power Supply
Typical Applications
Low Power Oscillator
Note:
The equations assume t
1
+ t
2
>>
t
pd0
+ t
pd1
©1983 Fairchild Semiconductor Corporation
MM74HC14 Rev. 1.4.0
www.fairchildsemi.com
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