Fairchild MM74C14 service manual
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MM74C14
Hex Schmitt Trig ger
MM74C14 Hex Schmitt Trigger
October 1987
Revised January 1999
General Description
The MM74C14 Hex Schmitt Trigger is a monolithic complementary MOS (C MOS) integrated circuit constructe d with
N- and P-channel enha ncement transistors. The positive
and negative going thre shold voltages V
low variation with respect to temperatu re (typ. 0.0005V/°C
= 10V), and hysteresis, VT+− VT−≥ 0.2 VCC is guar-
at V
CC
anteed.
and VT−, show
T+
All inputs are protected from damage due to static discharge by diode clamps to V
and GND.
CC
Features
■ Wide supply voltage range: 3.0V to 15V
■ High noise immunity: 0.70 V
■ Low power: TTL compatibility:
(typ.) 0.2 VCC guaranteed
0.4 V
CC
■ Hysteresis: 0.4 V
(typ.): 0.2 VCC guaranteed
CC
CC
(typ.)
Ordering Code:
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
Devices also available in Tape and Reel. Specify by appending suffix letter “X” to th e ordering code.
Connection Diagram
Pin Assignments for DIP and SOIC
Top View
© 1999 Fairchild Semiconductor Corporation DS005879.prf www.fairchildsemi.com
Absolute Maximum Ratings(Note 1)
Voltage at Any Pin −0.3Vto VCC + 0.3V
Operating Temperature Range −40°C to +85°C
MM74C14
Storage Temperature Range −65°C to +150°C
Power Dissipation
Dual-In-Line 700 mW
Absolute Maximum V
CC
Lead Temperature
(Soldering, 10 seconds) 260°C
Note 1: “Absolute Maxi mum Ratings” are those valu es beyond which the
safety of the device cannot be guaranteed. E x 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 Ch arac t eristics tables provide conditions
for actual device operation.
Small Outline 500mW
Operating V
Range 3.0V to 15V
CC
DC Electrical Characteristics
Min/Max limits apply across the guaranteed temperature range unless otherwise noted
Symbol Parameter Conditions Min Typ Max Units
CMOS TO CMOS
V
T+
V
T−
VT+–V
V
OUT(1)
V
OUT(0)
I
IN(1)
I
IN(0)
I
CC
CMOS/LPTTL INTERFACE
V
IN(1)
V
IN(0)
V
OUT(1)
V
OUT(0)
OUTPUT DRIVE (see Family Characteristics Data Sheet) TA = 25°C (Short Circuit Current)
I
SOURCE
I
SOURCE
I
SINK
I
SINK
Note 2: Only one of the six inputs is at ½ VCC; the others are either at VCC or GND.
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
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
Hysteresis VCC = 5V 1.0 2.2 3.6 V
T−
VCC = 10V 2.0 3.6 7.2 V
VCC = 15V 3.0 5.0 10.8 V
Logical “1” Output Voltage VCC = 5V, IO = −10 µA4.5 V
VCC = 10V, IO = −10 µA9.0 V
Logical “0” Output Voltage VCC = 5V, IO = 10 µA0.5V
VCC = 10V, IO = 10 µA1.0V
Logical “1” Input Current VCC = 15V, VIN = 15V 0.005 1.0 µA
Logical “0” Input Current VCC = 15V, VIN = 0V −1.0 −0.005 µA
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
Logical “1” Input Voltage VCC = 5V 4.3 V
Logical “0” Input Voltage VCC = 5V 0.7 V
Logical “1” Output Voltage 74C, VCC = 4.75V, IO = −360 µA2.4 V
Logical “0” Output Voltage 74C, VCC = 4.75V, IO = 360 µA0.4V
Output Source Current VCC = 5V, V
= 0V −1.75 −3.3 mA
OUT
(P-Channel)
Output Source Current VCC = 10V, V
= 0V −8.0 −15 mA
OUT
(P-Channel)
Output Sink Current VCC = 5V, V
OUT
= V
CC
1.75 3.6 mA
(N-Channel)
Output Sink Current VCC = 10V, V
OUT
= V
CC
8.0 16 mA
(N-Channel)
18V
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