October 1987
Revised January 1999
MM74C14 He
x Sc
hm
i
t
t
T
r
i
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r
1999 Fairchild Semiconductor Corporation
DS005879.prf
www.fairchildsemi.com
MM74C14
Hex Schmitt Trigger
General Description
The MM74C14 Hex Schmitt Trigger is a monolithic comple-
mentary MOS (CMOS) integrated circuit constructed with
N- and P-channel enhancement transistors. The positive
and negative going threshold voltages V
T
+
and V
T
-
, show
low variation with respect to temperature (typ. 0.0005V/
C
at V
CC
=
10V), and hysteresis, V
T
+
-
V
T
-
0.2 V
CC
is guar-
anteed.
All inputs are protected from damage due to static dis-
charge by diode clamps to V
CC
and GND.
Features
s
Wide supply voltage range:
3.0V to 15V
s
High noise immunity:
0.70 V
CC
(typ.)
s
Low power:
TTL compatibility:
0.4 V
CC
(typ.)
0.2 V
CC
guaranteed
s
Hysteresis:
0.4 V
CC
(typ.):
0.2 V
CC
guaranteed
Ordering Code:
Devices also available in Tape and Reel. Specify by appending suffix letter "X" to the ordering code.
Connection Diagram
Pin Assignments for DIP and SOIC
Top View
Order Number
Package Number
Package Description
MM74C14M
M14A
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150" Narrow
MM74C14N
N14A
14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
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2
MM
74C14
Absolute Maximum Ratings
(Note 1)
Note 1: "Absolute Maximum Ratings" are those values beyond which the
safety of the device cannot be guaranteed. Except for "Operating Tempera-
ture Range" they are not meant to imply that the devices should be oper-
ated at these limits. The Electrical Characteristics tables provide conditions
for actual device operation.
DC Electrical Characteristics
Min/Max limits apply across the guaranteed temperature range unless otherwise noted
Note 2: Only one of the six inputs is at V
CC
; the others are either at V
CC
or GND.
Voltage at Any Pin
-
0.3Vto V
CC
+
0.3V
Operating Temperature Range
-
40
C to
+
85
C
Storage Temperature Range
-
65
C to
+
150
C
Power Dissipation
Dual-In-Line
700 mW
Small Outline
500mW
Operating V
CC
Range
3.0V to 15V
Absolute Maximum V
CC
18V
Lead Temperature
(Soldering, 10 seconds)
260
C
Symbol
Parameter
Conditions
Min
Typ
Max
Units
CMOS TO CMOS
V
T
+
Positive Going Threshold Voltage
V
CC
=
5V
3.0
3.6
4.3
V
V
CC
=
10V
6.0
6.8
8.6
V
V
CC
=
15V
9.0
10.0
12.9
V
V
T
-
Negative Going Threshold Voltage
V
CC
=
5V
0.7
1.4
2.0
V
V
CC
=
10V
1.4
3.2
4.0
V
V
CC
=
15V
2.1
5.0
6.0
V
V
T
+
V
T
-
Hysteresis
V
CC
=
5V
1.0
2.2
3.6
V
V
CC
=
10V
2.0
3.6
7.2
V
V
CC
=
15V
3.0
5.0
10.8
V
V
OUT(1)
Logical "1" Output Voltage
V
CC
=
5V, I
O
=
-
10
A
4.5
V
V
CC
=
10V, I
O
=
-
10
A
9.0
V
V
OUT(0)
Logical "0" Output Voltage
V
CC
=
5V, I
O
=
10
A
0.5
V
V
CC
=
10V, I
O
=
10
A
1.0
V
I
IN(1)
Logical "1" Input Current
V
CC
=
15V, V
IN
=
15V
0.005
1.0
A
I
IN(0)
Logical "0" Input Current
V
CC
=
15V, V
IN
=
0V
-
1.0
-
0.005
A
I
CC
Supply Current
V
CC
=
15V, V
IN
=
0V/15V
0.05
15
A
V
CC
=
5V, V
IN
=
2.5V (Note 2)
20
A
V
CC
=
10V, V
IN
=
5V (Note 2)
200
A
V
CC
=
15V, V
IN
=
7.5V (Note 2)
600
A
CMOS/LPTTL INTERFACE
V
IN(1)
Logical "1" Input Voltage
V
CC
=
5V
4.3
V
V
IN(0)
Logical "0" Input Voltage
V
CC
=
5V
0.7
V
V
OUT(1)
Logical "1" Output Voltage
74C, V
CC
=
4.75V, I
O
=
-
360
A
2.4
V
V
OUT(0)
Logical "0" Output Voltage
74C, V
CC
=
4.75V, I
O
=
360
A
0.4
V
OUTPUT DRIVE (see Family Characteristics Data Sheet) T
A
=
25
C (Short Circuit Current)
I
SOURCE
Output Source Current
V
CC
=
5V, V
OUT
=
0V
-
1.75
-
3.3
mA
(P-Channel)
I
SOURCE
Output Source Current
V
CC
=
10V, V
OUT
=
0V
-
8.0
-
15
mA
(P-Channel)
I
SINK
Output Sink Current
V
CC
=
5V, V
OUT
=
V
CC
1.75
3.6
mA
(N-Channel)
I
SINK
Output Sink Current
V
CC
=
10V, V
OUT
=
V
CC
8.0
16
mA
(N-Channel)
3
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MM74C14
AC Electrical Characteristics
(Note 3)
T
A
=
25
C, C
L
=
50 pF, unless otherwise specified
Note 3: AC Parameters are guaranteed by DC correlated testing.
Note 4: Capacitance is guaranteed by periodic testing.
Note 5: C
PD
determines the no load AC power consumption of any CMOS device. For complete explanation see Family Characteristics Application Note--
AN-90.
Typical Applications
Low Power Oscillator
Note: The equations assume t
1
+
t
2
>>
t
pd0
+
t
pd1
Symbol
Parameter
Conditions
Min
Typ
Max
Units
t
PD0
Propagation Delay from Input
V
CC
=
5V
220
400
n
t
PD1
to Output
V
CC
=
10V
80
200
ns
C
IN
Input Capacitance
Any Input (Note 4)
5.0
pF
C
PD
Power Dissipation Capacitance
Per Gate (Note 5)
20
pF
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4
MM
74C14
Typical Performance Characteristics
Typical Transfer Characteristics
Guaranteed Trip Point Range
Note: For more information on output drive characteristics, power dissipation, and propagation delays, see AN-90.
5
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MM74C14
Physical Dimensions
inches (millimeters) unless otherwise noted
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150" Narrow
Package Number M14A
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.
M
M
74C14 He
x Sc
hmit
t T
r
i
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g
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LIFE SUPPORT POLICY
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.
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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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
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