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October 1987
Revised January 1999
MM74C14 Hex Schmitt Trigger
© 1999 Fairchild Semiconductor Corporation DS005879.prf www.fairchildsemi.com
MM74C14
Hex Schmitt Trigger
General Description
The MM74C14 Hex Schmitt Trigger is a monolithic complementary MOS (CMOS ) integrated circuit constructed w ith
N- and P-channel enha ncement transistors. The positive
and negative going thre shold voltages V
T+
and VT−, show
low variation with respect to temperatu re (typ. 0.0005V/°C
at V
CC
= 10V), and hysteresis, VT+− VT−≥ 0.2 VCC is guar-
anteed.
All inputs are protected from damage due to static discharge by diode clamps t o V
CC
and GND.
Features
■ Wide supply voltage range: 3.0V to 15V
■ High noise immunity: 0.70 V
CC
(typ.)
■ Low power: TTL compatibility:
0.4 V
CC
(typ.) 0.2 VCC guaranteed
■ Hysteresis: 0.4 V
CC
(typ.): 0.2 VCC 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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MM74C14
Absolute Maximum Ratings(Note 1)
Note 1: “Absolute Maxi mum Ratings” are those valu es beyond which the
safety of the device cannot be guaranteed. Ex ce pt for “O perating Temperature Range” they are not mean t to imply that the devices sho uld be operated at these limits. The Electrical Charac t eristics 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 ½ VCC; the others are either at VCC or GND.
Voltage at Any Pin −0.3Vto VCC + 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 VCC = 5V 3.0 3.6 4.3 V
VCC = 10V 6.0 6.8 8.6 V
VCC = 15V 9.0 10.0 12.9 V
V
T−
Negative Going Threshold Voltage VCC = 5V 0.7 1.4 2.0 V
VCC = 10V 1.4 3.2 4.0 V
VCC = 15V 2.1 5.0 6.0 V
VT+–V
T−
Hysteresis VCC = 5V 1.0 2.2 3.6 V
VCC = 10V 2.0 3.6 7.2 V
VCC = 15V 3.0 5.0 10.8 V
V
OUT(1)
Logical “1” Output Voltage VCC = 5V, IO = −10 µA4.5 V
VCC = 10V, IO = −10 µA9.0 V
V
OUT(0)
Logical “0” Output Voltage VCC = 5V, IO = 10 µA0.5V
VCC = 10V, IO = 10 µA1.0V
I
IN(1)
Logical “1” Input Current VCC = 15V, VIN = 15V 0.005 1.0 µA
I
IN(0)
Logical “0” Input Current VCC = 15V, VIN = 0V −1.0 −0.005 µA
I
CC
Supply Current VCC = 15V, VIN = 0V/15V 0.05 15 µA
VCC = 5V, VIN = 2.5V (Note 2) 20 µA
VCC = 10V, VIN = 5V (Note 2) 200 µA
VCC = 15V, VIN = 7.5V (Note 2) 600 µA
CMOS/LPTTL INTERFACE
V
IN(1)
Logical “1” Input Voltage VCC = 5V 4.3 V
V
IN(0)
Logical “0” Input Voltage VCC = 5V 0.7 V
V
OUT(1)
Logical “1” Output Voltage 74C, VCC = 4.75V, IO = −360 µA2.4 V
V
OUT(0)
Logical “0” Output Voltage 74C, VCC = 4.75V, IO = 360 µA0.4V
OUTPUT DRIVE (see Family Characteristics Data Sheet) TA = 25°C (Short Circuit Current)
I
SOURCE
Output Source Current VCC = 5V, V
OUT
= 0V −1.75 −3.3 mA
(P-Channel)
I
SOURCE
Output Source Current VCC = 10V, V
OUT
= 0V −8.0 −15 mA
(P-Channel)
I
SINK
Output Sink Current VCC = 5V, V
OUT
= V
CC
1.75 3.6 mA
(N-Channel)
I
SINK
Output Sink Current VCC = 10V, V
OUT
= V
CC
8.0 16 mA
(N-Channel)
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MM74C14
AC Electrical Characteristics (Note 3)
T
A
= 25°C, CL = 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 t he no lo ad AC power cons um ptio n of any CM OS d evice. For com plet e expla nati on se e Family Ch aract eri stics App licat ion Note—
AN-90.
Typical Applications
Low Power Oscillator
Note: The equations assume t1 + t2 >> t
pd0
+t
pd1
Symbol Parameter Conditions Min Typ Max Units
t
PD0
Propagation Delay from Input VCC = 5V 220 400 n
t
PD1
to Output VCC = 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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MM74C14
Typical Performance Characteristics
Typical Transfer Characteristics Guaranteed Trip Point Range
Note: For more information on ou tp ut drive characteristics, powe r dissipation, and propagation delays, see AN-90.
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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
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Fairchild does not assume any responsibility for use of any circuitry descri bed, no circuit patent licenses are implied and Fairchild reser ves the right at any time without notice to change said circuitr y and specifications.
MM74C14 Hex Schmitt Trigger
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 system s ar e devices or syste ms
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 reasonably expected to result in a significant injury to the
user.
2. A critical component in any c omponent of a life suppor t
device or system whose failure to perform can be reasonably expected to cause the failure of the life suppor t
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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