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| MM74C914 Hex Schmitt Trigger with Extended Input Voltage October 1987 Revised January 1999 MM74C914 Hex Schmitt Trigger with Extended Input Voltage General Description The MM74C914 is a monolithic CMOS Hex Schmitt trigger with special input protection scheme. This scheme allows the input voltage levels to exceed VCC or ground by at least 10V (VCC -25V to GND + 25V), and is valuable for applications involving voltage level shifting or mismatched power supplies. 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 the hysteresis, VT+ - VT- 0.2 VCC is guaranteed. Features s Hysteresis: s Special Range 0.45 VCC (typ.) 0.2 VCCguaranteed protection: Extended Input Voltage input s Wide supply voltage range: 3V to 15V s High noise immunity: 0.7 VCC (typ.) s Low power TTL compatibility: Fan out of 2 driving 74L Ordering Code: Order Number MM74C914M MM74C914N Package Number M14A N14A Package Description 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150" Narrow 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide Device also available in Tape and Reel. Specify by appending suffix letter "X" to the ordering code. Connection Diagrams Pin Assignments for DIP Special Input Protection Top View 8V 25V for the diodes. (c) 1999 Fairchild Semiconductor Corporation DS005917.prf www.fairchildsemi.com MM74C914 Absolute Maximum Ratings(Note 1) Voltage at any Input Pin Voltage at any other Pin Operating Temperature Range (TA) Storage Temperature Range (TS) Power Dissipation Dual-In-Line Small Outline 700 mW 500mW VCC - 25V to GND + 25V -0.3Vto VCC + 0.3V -40C to +85C -65C to +150C Operating VCC Range Absolute Maximum (VCC) Lead Temperature (TL) (Soldering, 10 seconds) 3V to 15V 18V 300C 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 temperature range unless otherwise noted Symbol CMOS TO CMOS VT+ Positive Going Threshold Voltage VCC = 5V VCC = 10V VCC = 15V VT- Negative Going Threshold Voltage VCC = 5V VCC = 10V VCC = 15V VT+ - VT- Hysteresis VCC = 5V VCC = 10V VCC = 15V VOUT(1) VOUT(0) IIN(1) IIN(0) ICC Logical"1" Output Voltage Logical "0" Output Voltage Logical "1" Input Current Logical "0" Input Current Supply Current VCC = 5V, IO = -10 A VCC = 10V, IO = -10 A VCC = 5V, IO = +10 A VCC = 10V, IO = +10 A VCC = 15V, VIN = 25V VCC = 15V, VIN = -10V VCC = 15V, VIN = - 10V/25V VCC = 5V, VIN = - 2.5V (Note 2) VCC = 10V, VIN = 5V (Note 2) VCC = 15V, VIN = 7.5V (Note 2) CMOS/LPTTL INTERFACE VIN(1) VIN(0) VOUT(1) VOUT(0) ISOURCE ISOURCE ISINK ISINK Logical "1" Input Voltage Logical "0" Input Voltage Logical "1" Output Voltage Logical "0" Output Voltage Output Source Current (P-Channel) Output Source Current (P-Channel) Output Sink Current (N-Channel) Output Sink Current (N-Channel) Note 2: Only one input is at 1/2 VCC, the others are either at VCC or GND. Parameter Conditions Min Typ Max Units 3.0 6.0 9.0 0.7 1.4 2.1 1.0 2.0 3.0 4.5 9.0 3.6 6.8 10 1.4 3.2 5 2.2 3.6 5 4.3 8.6 12.9 2.0 4.0 6.0 3.6 7.2 10.8 V V V V V V V V V 0.5 1.0 0.005 -100 -0.005 0.05 20 200 600 4.3 0.7 2.4 0.4 -1.75 -8.0 1.75 8.0 -3.3 -15 3.6 16 300 5.0 V V A A A A A A V V V V mA mA mA mA VCC = 5V VCC = 5V VCC = 4.75V, IO = -360 A VCC = 4.75V, IO = 360 A VCC = 5V, VOUT = 0V, TA = 25C VCC = 10V, VOUT = 0V, TA = 25C VCC = 5V, VOUT = VCC, TA = 25C VCC = 10V, VOUT = VCC, TA = 25C OUTPUT DRIVE (See Family Characteristics Data Sheet) (Short Circuit Current) www.fairchildsemi.com 2 MM74C914 AC Electrical Characteristics TA = 25C, CL = 50 pF, unless otherwise specified Symbol tPHL tPLH CIN CPD Input Capacitance Power Dissipation Capacitance Parameter (Note 3) Conditions Min Typ 220 80 5 20 Max 400 200 Units ns ns pF pF Propagation Delay from Input to Output VCC = 5V VCC = 10V Any Input (Note 4) Per Gate (Note 5) Note 3: AC Parameters are guaranteed by DC correlated testing. Note 4: Capacitance is guaranteed by periodic testing. Note 5: CPD determines the no load AC power consumption of any CMOS device. For complete explanation see Family Characteristics Application Note, AN-90. Typical Performance Characteristics Typical Transfer Characteristics Guaranteed Trip Point Range Typical Application Note: VCC1 = VCC2 GND1 = GND2 3 www.fairchildsemi.com MM74C914 Physical Dimensions inches (millimeters) unless otherwise noted 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150" Narrow Package Number M14A www.fairchildsemi.com 4 MM74C914 Hex Schmitt Trigger with Extended Input Voltage 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 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: 2. A critical component in any component of a life support 1. Life support devices or systems are devices or systems device or system whose failure to perform can be reawhich, (a) are intended for surgical implant into the sonably expected to cause the failure of the life support body, or (b) support or sustain life, and (c) whose failure device or system, or to affect its safety or effectiveness. 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 www.fairchildsemi.com user. 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. |
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