October 1987
Revised January 1999
MM74C14
Hex Schmitt Trigger
General Description
The MM74C14 Hex Schmitt Trigger is a monolithic complementary MOS (CMOS) integrated circuit constructed with N- and P-channel enhancement transistors. The positive and negative going threshold voltages VT+ and VT−, show low variation with respect to temperature (typ. 0.0005V/°C at VCC = 10V), and hysteresis, VT+ - VT− ³ 0.2 VCC is guaranteed.
All inputs are protected from damage due to static discharge by diode clamps to VCC and GND.
Features
■Wide supply voltage range: 3.0V to 15V
■High noise immunity: 0.70 VCC (typ.)
■Low power: TTL compatibility:
0.4 VCC (typ.) 0.2 VCC guaranteed
■ Hysteresis: 0.4 VCC (typ.): 0.2 VCC guaranteed
Ordering Code:
Order Number |
Package Number |
Package Description |
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MM74C14M |
M14A |
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150” Narrow |
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MM74C14N |
N14A |
14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide |
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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
Trigger Schmitt Hex MM74C14
© 1999 Fairchild Semiconductor Corporation |
DS005879.prf |
www.fairchildsemi.com |
MM74C14
Absolute Maximum Ratings(Note 1)
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 VCC Range |
3.0V to 15V |
Absolute Maximum VCC |
18V |
Lead Temperature |
|
(Soldering, 10 seconds) |
260°C |
Note 1: “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. Except for “Operating Temperature Range” they are not meant to imply that the devices should be operated 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
Symbol |
Parameter |
Conditions |
Min |
Typ |
Max |
Units |
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CMOS TO CMOS |
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VT+ |
Positive Going Threshold Voltage |
VCC = 5V |
3.0 |
3.6 |
4.3 |
V |
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VCC = 10V |
6.0 |
6.8 |
8.6 |
V |
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VCC = 15V |
9.0 |
10.0 |
12.9 |
V |
VT− |
Negative Going Threshold Voltage |
VCC = 5V |
0.7 |
1.4 |
2.0 |
V |
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|
VCC = 10V |
1.4 |
3.2 |
4.0 |
V |
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VCC = 15V |
2.1 |
5.0 |
6.0 |
V |
VT+–VT− |
Hysteresis |
VCC = 5V |
1.0 |
2.2 |
3.6 |
V |
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|
VCC = 10V |
2.0 |
3.6 |
7.2 |
V |
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VCC = 15V |
3.0 |
5.0 |
10.8 |
V |
VOUT(1) |
Logical “1” Output Voltage |
V CC = 5V, IO = −10 μA |
4.5 |
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V |
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VCC = 10V, IO = −10 μA |
9.0 |
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V |
VOUT(0) |
Logical “0” Output Voltage |
V CC = 5V, IO = 10 μA |
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|
0.5 |
V |
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VCC = 10V, IO = 10 μA |
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1.0 |
V |
IIN(1) |
Logical “1” Input Current |
V CC = 15V, VIN = 15V |
|
0.005 |
1.0 |
μA |
IIN(0) |
Logical “0” Input Current |
V CC = 15V, VIN = 0V |
−1.0 |
−0.005 |
|
μA |
ICC |
Supply Current |
VCC = 15V, VIN = 0V/15V |
|
0.05 |
15 |
μA |
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VCC = 5V, VIN = 2.5V (Note 2) |
|
20 |
|
μA |
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VCC = 10V, VIN = 5V (Note 2) |
|
200 |
|
μA |
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VCC = 15V, VIN = 7.5V (Note 2) |
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600 |
|
μA |
CMOS/LPTTL INTERFACE |
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VIN(1) |
Logical “1” Input Voltage |
V CC = 5V |
4.3 |
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V |
VIN(0) |
Logical “0” Input Voltage |
V CC = 5V |
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0.7 |
V |
VOUT(1) |
Logical “1” Output Voltage |
74C, V CC = 4.75V, IO = −360 μA |
2.4 |
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|
V |
VOUT(0) |
Logical “0” Output Voltage |
74C, V CC = 4.75V, IO = 360 μA |
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0.4 |
V |
OUTPUT DRIVE (see Family Characteristics Data Sheet) TA = 25°C (Short Circuit Current) |
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ISOURCE |
Output Source Current |
VCC = 5V, VOUT = 0V |
−1.75 |
−3.3 |
|
mA |
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(P-Channel) |
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ISOURCE |
Output Source Current |
VCC = 10V, VOUT = 0V |
−8.0 |
−15 |
|
mA |
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(P-Channel) |
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ISINK |
Output Sink Current |
VCC = 5V, VOUT = VCC |
1.75 |
3.6 |
|
mA |
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(N-Channel) |
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ISINK |
Output Sink Current |
VCC = 10V, VOUT = VCC |
8.0 |
16 |
|
mA |
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(N-Channel) |
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Note 2: Only one of the six inputs is at ½ V CC; the others are either at VCC or GND.
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