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national semiconductor MM74C908/MM74C918 Dual CMOS 30V Relay Driver handbook

1. OPTION 1 0 280 0 040 7112 MIN 0 030 T OPTION 2 0 300 0 320 0 762 0 038 0 145 0 200 1 62 8 128 i aiv 3 683 5 080 0 125 0 140 20 125 0 140 ma 0 065 3 175 3 556 7 0125 0 020 0 009 0 015_ na 1 851 90 4 0 508 3 175 0 229 0 381 DIA MIN 0 040 NOM 0 018 0 003 0 325 10 325 0 015 0 457 0 076 2 1 018 oe 0 100 0 010 nass taisen 2 540 0 254 0 045 0 015 1 143 10 381 iis qme 1 270 REV Molded Dual In Line Package N Order Number MM74C908N NS Package Number NO8E MM74C908 MM74C918 Dual CMOS 30V Relay Driver Physical Dimensions inches millimeters Continued 0 740 0 770 PIN 1 18 80 19 56 IDENT 0 092 2 337 0 135 0 005 3 429 0 127 0 145 0 200 3 683 5 080 0 020 0 508 MIN 0125 0160 3 175 3 810 0 014 0 023 typ y 0 356 0 584 LIFE SUPPORT POLICY 0 030 0 762 DEPTH OPTION 1 0 090 2 286 INDEX AREA 0 250 0 010 6 350 40 254 PIN NO 1 IDENT OPTION 02 0 300 0 320 7 520 8 128 mg 4 OPTIONAL 95 5 90 4 TYP la 7i 0 075 0 015 Ex 1 905 0 381 0 280 lt 0 100 0 010 vid ai 50 029 1 0 040 1 270 0 254 0325 Vots 1016 eass m Molded Dual In Line Package Order Number MM
2. MM74C908 General Description The MM74C908 and MM74C918 are general purpose dual high voltage drivers each capable of sourcing a minimum of 250 mA at Vout Vcc 3V and Ty 65 C The MM74C908 and MM74C918 consist of two CMOS NAND gates driving an emitter follower Darlington output to achieve high current drive and high voltage capabilities In the OFF state the outputs can withstand a maximum of 30 across the device These CMOS drivers are useful in interfacing normal CMOS voltage levels to driving relays regulators lamps etc vationat Semiconductor MM74C908 MM74C918 Dual CMOS 30V Relay Driver November 1990 Features Wide supply voltage range 3V to 18V W High noise immunity 0 45 Voc typ W Low output ON resistance 80 typ W High voltage 30V W High current 250 mA Connection Diagrams Dual In Line Package MM74C908 Your B Your a Top View Dual In Line Package MM74C918 TRI STATE a registered trademark of National Semiconductor Corporation Order Number MM74C908 GND TL F 5912 1 Order Number MM74C918 Your TL F 5912 2 91995 National Semiconductor Corporation TL F 5912 RRD B30M105 Printed in U S A ejed SOND IENA 8L69tZ7INW 8069tZININ Absolute Maximum Ratings note 1 If Military Aerospace specified devices are required Operating Range AV to 18V p
3. 74C918N NS Package Number N14A 0 008 0 016 0 203 0 405 NIAA REY NATIONAL 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 NATIONAL SEMICONDUCTOR CORPORATION As used herein 1 Life support devices or systems are devices or systems which a are intended for surgical implant into the body or b support or sustain life and 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 is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system or to affect its safety or effectiveness National Semiconductor Corporation 1111 West Bardin Road Arlington TX 76017 Tel 1 800 272 9959 Fax 1 800 737 7018 N National Semiconductor Europe Fax 49 0 180 530 85 86 Email cnjwge tevm2 nsc com Deutsch Tel 49 0 180 530 85 85 English Tel 49 0 180 532 78 32 Fran ais Tel 49 0 180 532 93 58 Italiano Tel 49 0 180 534 16 80 National Semiconductor Hong Kong Ltd 13th Floor Straight Block Ocean Centre 5 Canton Rd Tsimshatsui Kowloon Hong Kong Tel 852 2737 1600 Fax 852 2736 9960 National Semiconductor Japan
4. 9 V lour 175 mA Vcc 2 5V Ty 150 C 3 15 Vcc 2 0 V RoN Output Resistance lour 300 mA Vcc 2 5V Ty 25 6 0 9 0 lour 250 mA Vcc gt 5V Ty 65 7 5 12 Q lour 175 mA Vcc 2 5V Ty 150 C 10 18 Q Output Resistance 0 55 0 80 Coefficient OJA Thermal Resistance Note 3 100 110 C W MM74C908 MM74C918 Note 3 45 55 C W AC Electrical Characteristics Symbol Parameter Conditions Min Typ Max Units t Propagation Dela Voc 5V 500 pd1 pag y to a Logical 1 BO pF TA 25 C 130 eee ng Voc 10V 509 50 pF 25 m 120 todo Propagation Delay Voc 5V 500 20 10 to a Logic 0 50 pF TA 25 C Voc 10V 500 50 pF Ta 25 C T8 20 Input Capacitance Note 2 5 0 pF AC Parameters are guaranteed by DC correlated testing 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 table of Electrical Characteristics provides conditions for actual device operation Note 2 Capacitance is guaranteed by periodic testing Note 3 0 measured in free air with device soldered into printed circuit board Typical Performance Characteristics Maximum Power Dissipation Max
5. Ltd Tel 81 043 299 2309 Fax 81 043 299 2408 National does not assume any responsibility for use of any circuitry described no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications
6. ature Ty and is given by Ron 9 Ty 25 0 008 9 1 and Ty is given by Ty 2 where Ta ambient temperature thermal resist ance and Ppay is the average power dissipated within the device consists of normal CMOS power terms due to leakage currents internal capacitance switching etc which are insignificant when compared to the power dissi pated in the outputs Thus the output power term defines the allowable limits of operation and includes both outputs A and B Pp is given by loa Ron log 3 where lo is the output current given by VL lp 4 Ron RL VL is the load voltage The average power dissipation is a function of the duty cycle loa Ron Duty Cyclea 5 log Ron Duty Cycleg where the duty cycle is the time in the current source state Substituting equations 1 and 5 into 2 yields Ty Ta Oya 9 Ty 25 0 008 9 6a Duty log Duty Cycleg simplifying _ TA 7 2 0A Duty Cyclea log Duty Cycleg 1 0 072 ja Duty Cyclea log Duty Cycleg Equations 1 4 and 6b be used in iterative meth od to determine the output current output resistance and junction temperature TJ Applications See AN 177 for applications MM74C908 OUTPUT A OUTPUT B vL Mi TL F 5912 6 For
7. example let 15V 1000 Rig 1000 VL OV 25 C 110 C W Duty Cycle 50 Duty Cycleg 75 Assuming Ron 110 then Voc VL 15 135 1 Ron 11 100 Vcc V log 135 1 mA Ron Rip and ae Ta 7 2 Duty log Duty Cycleg l 971 0 072 Duty log Duty Cycleg _ 25 7 2 110 0 1351 2 0 5 0 1351 2 0 75 4 0 072 110 0 1351 2 0 5 0 1351 2 0 75 Ty 52 6 C and Ron 9 Ty 25 0 008 9 9 52 6 25 0 008 9 110 TJ Physical Dimensions inches millimeters 0 785 19 939 MAX 0 025 0 635 RAD 0 220 0 310 5 588 7 874 0 290 0 320 0 005 2 0 200 7 366 8 128 ur GLASS 0 060 0 005 5 080 gs SEALANT 1 824 20 127 0 020 0 060 0 180 i 0 508 1 524 4 572 6 04 AR 10 0 008 0 012 td 0310 0410 0 203 0 305 0 018 20 003 1874 1041 0 098 0 457 0 076 MIN 2489 3 175 5 080 MAX BOTH ENDS 0 100 0 010 0 150 2 540 0 254 280 MIN J14A REV 0 Ceramic Dual In Line Package J Order Number MM74C918J NS Package Number J14A 0 373 0 400 9 474 10 16 0 090 0 092 LLL 0 032 0 005 2 337 4 0 813 0 127 2 0 250 0 005 RAD PENT s 6 35 0 127 PN No
8. imum Vout Typical lout vs Typical Vout TYPICAL mA vs Ambient Temperature vs louT 2 52 Za 7 2 1800 1600 x amp 1400 1200 1000 1 2 HI E 2 1 E 75 M L MM74C908 S9 50 i 1 110 E 200 T i 5 25 tt tt 0 1 0 10 20 30 40 50 60 70 80 90100110120 0 10 15 Ta 7 AMBIENT TEMPERATURE C Typical vs Typical Vout TYPICAL mA 5045 40 35 302520151005 0 TYPICAL INPUT MM74C908 OR MM74C918 OUTPUT e 50 pF TL F 5912 4 MAXIMUM Vc 7 Your Y 20 25 30 55 5 04 5 40 3 5 3 0 25 2 0 1 5 10 0 5 0 TYPICAL Vout V Typical vs Typical Vout TYPICAL lyr mA 100 Voc SY 50 1515096 5 04 5 4 0 3 5 3 0 2 5 2 0 1 5 1 0 0 5 0 0 TYPICAL V TL F 5912 3 Switching Time Waveforms OUTPUT TL F 5912 5 tr tf 20 ns Power Considerations Calculating Output Resistance gt 180 The output resistance Ron is a function of the junc tion temper
9. lease contact the National Semiconductor Sales Absolute Maximum Vcc 19V Office Distributors for availability and specifications ISOURCE 500 mA Voltage at any Input 0 8V to 0 3 Storage Temperature Range Ts 65 C to 150 C Voltage at any Output Pin 32V Lead Temperature Operating Temperature Range Soldering 10 seconds 260 C MM74C908 MM740918 TAO Power Dissipation Pp Refer to Maximum Power Dissipation vs Ambient Temperature Graph DC Electrical Characteristics min max limits apply across temperature range unless otherwise noted Symbol Parameter Conditions Min Typ Max Units CMOS TO CMOS VIN 1 Logical 1 Input Voltage Vcc 5V 3 5 V Vcc 10V 8 0 V VIN 0 Logical 0 Input Voltage Vcc 5V 1 5 V Vcc 10V 2 0 V liN 1 Logical 1 Input Current Voc 15V Vin 15V 0 005 1 0 pA liN 0 Logical 0 Input Current Voc 15V Vin OV 1 0 0 005 pA loc Supply Current Voc 15V Outputs Open Circuit 0 05 15 pA Output OFF Voltage Vin lour 200 pA 30 V CMOS LPTTL INTERFACE VIN 1 Logical 1 Input Voltage MM74C908 MM74C918 4 75V Vcc 1 5 V VIN 0 Logical 0 Input Voltage MM74C908 MM74C918 Voc 4 75V 0 8 V OUTPUT DRIVE VOUT Output Voltage lour 300 mA Vcc gt 5V Ty 25 2 7 1 8 V louT 250 Voc gt 5 Ty 65 C 3 0 1

national semiconductor MM74C908/MM74C918 Dual CMOS 30V Relay Driver handbook

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