MM74C14 Hex Schmitt Trigger
October 1987
Revised May 2002
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:
s
Low power:
0.4 V
CC
(typ.)
s
Hysteresis:
3.0V to 15V
s
High noise immunity: 0.70 V
CC
(typ.)
TTL compatibility:
0.2 V
CC
guaranteed
0.4 V
CC
(typ.): 0.2 V
CC
guaranteed
Ordering Code:
Order Number
MM74C14M
MM74C14N
Package Number
M14A
N14A
Package Description
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
Devices also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
Connection Diagram
Top View
© 2002 Fairchild Semiconductor Corporation
DS005879
www.fairchildsemi.com
MM74C14
Absolute Maximum Ratings
(Note 1)
Voltage at Any Pin
Operating Temperature Range
Storage Temperature Range
Power Dissipation
Dual-In-Line
Small Outline
Operating V
CC
Range
Absolute Maximum V
CC
Lead Temperature
(Soldering, 10 seconds)
260
°
C
700 mW
500mW
3.0V to 15V
18V
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.
−
0.3Vto V
CC
+
0.3V
−
55
°
C to
+
125
°
C
−
65
°
C to
+
150
°
C
DC Electrical Characteristics
Min/Max limits apply across the guaranteed temperature range unless otherwise noted
Symbol
Parameter
Conditions
CMOS TO CMOS
V
T
+
Positive Going Threshold Voltage
V
CC
=
5V
V
CC
=
10V
V
CC
=
15V
V
T
−
Negative Going Threshold Voltage
V
CC
=
5V
V
CC
=
10V
V
CC
=
15V
V
T
+
– V
T
−
Hysteresis
V
CC
=
5V
V
CC
=
10V
V
CC
=
15V
V
OUT(1)
V
OUT(0)
I
IN(1)
I
IN(0)
I
CC
Logical “1” Output Voltage
Logical “0” Output Voltage
Logical “1” Input Current
Logical “0” Input Current
Supply Current
V
CC
=
5V, I
O
= −10 µA
V
CC
=
10V, I
O
= −10 µA
V
CC
=
5V, I
O
=
10
µA
V
CC
=
10V, I
O
=
10
µA
V
CC
=
15V, V
IN
=
15V
V
CC
=
15V, V
IN
=
0V
V
CC
=
15V, V
IN
=
0V/15V
V
CC
=
5V, V
IN
=
2.5V (Note 2)
V
CC
=
10V, V
IN
=
5V (Note 2)
V
CC
=
15V, V
IN
=
7.5V (Note 2)
CMOS/LPTTL INTERFACE
V
IN(1)
V
IN(0)
V
OUT(1)
V
OUT(0)
Logical “1” Input Voltage
Logical “0” Input Voltage
Logical “1” Output Voltage
Logical “0” Output Voltage
V
CC
=
5V
V
CC
=
5V
74C, V
CC
=
4.75V, I
O
= −360 µA
74C, V
CC
=
4.75V, I
O
=
360
µA
2.4
0.4
4.3
0.7
V
V
V
V
−1.0
0.005
−0.005
0.05
20
200
600
15
µA
3.0
6.0
9.0
0.7
1.4
2.1
1.0
2.0
3.0
4.5
9.0
0.5
1.0
1.0
3.6
6.8
10.0
1.4
3.2
5.0
2.2
3.6
5.0
4.3
8.6
12.9
2.0
4.0
6.0
3.6
7.2
10.8
V
V
µA
µA
V
V
V
Min
Typ
Max
Units
OUTPUT DRIVE (see Family Characteristics Data Sheet) T
A
=
25°C (Short Circuit Current)
I
SOURCE
I
SOURCE
I
SINK
I
SINK
Output Source Current
(P-Channel)
Output Source Current
(P-Channel)
Output Sink Current
(N-Channel)
Output Sink Current
(N-Channel)
Note 2:
Only one of the six inputs is at ½ V
CC
; the others are either at V
CC
or GND.
V
CC
=
5V, V
OUT
=
0V
V
CC
=
10V, V
OUT
=
0V
V
CC
=
5V, V
OUT
=
V
CC
V
CC
=
10V, V
OUT
=
V
CC
−1.75
−8.0
1.75
8.0
−3.3
−15
3.6
16
mA
mA
mA
mA
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2
MM74C14
AC Electrical Characteristics
T
A
=
25
°
C, C
L
=
50 pF, unless otherwise specified
Symbol
t
PD0
t
PD1
C
IN
C
PD
Parameter
Propagation Delay
from Input to Output
Input Capacitance
Power Dissipation Capacitance
(Note 3)
Conditions
V
CC
=
5V
V
CC
=
10V
Any Input (Note 4)
Per Gate (Note 5)
Min
Typ
220
80
5.0
20
Max
400
200
Units
n
ns
pF
pF
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
3
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MM74C14
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.
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4
MM74C14
Physical Dimensions
inches (millimeters) unless otherwise noted
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
Package Number M14A
5
www.fairchildsemi.com
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