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? 2006 microchip technology inc. ds21393c-page 1 tc1426/tc1427/tc1428 features: ?low cost ? latch-up protected: will withstand 500 ma reverse output current ? esd protected 2kv ? high peak output current: 1.2a ? wide operating range: - 4.5v to 16v ? high capacitive load drive capability: 1000 pf in 38 nsec ? low delay time: 75 nsec max ? logic input threshold independent of supply voltage ? output voltage swing to within 25 mv of ground or v dd ? low output impedance: 8 applications: ? power mosfet drivers ? switched mode power supplies ? pulse transformer drive ? small motor controls ? print head drive device selection table package type general description: the tc1426/tc1427/tc1428 are a family of 1.2a dual high-speed drivers. cmos fabrication is used for low- power consumption and high efficiency. these devices are fabricated using an epitaxial layer to effectively short out the intrinsic parasitic transistor responsible for cmos latch-up. they incorporate a number of other design and process refinements to increase their long-term reliability. the tc1426 is compatible with the bipolar ds0026, but only draws 1/5 of the quiescent current. the tc1426/ tc1427/tc1428 are also compatible with the tc426/ tc427/tc428, but with 1.2a peak output current rather than the 1.5a of the tc426/tc427/tc428 devices. other compatible drivers are the tc4426/tc4427/ tc4428 and the tc4426a/tc4427a/tc4428a. the tc4426/tc4427/tc4428 have the added feature that the inputs can withstand negative voltage up to 5v with diode protection circuits. the tc4426a/tc4427a/ tc4428a have matched input to output leading edge and falling edge delays, t d1 and t d2 , for processing short duration pulses in the 25 nanoseconds range. all of the above drivers are pin compatible. the high-input impedance tc1426/tc1427/tc1428 drivers are cmos/ttl input-compatible, do not require the speed-up needed by the bipolar devices, and can be directly driven by most pwm ics. this family of devices is available in inverting and non- inverting versions. specifications have been optimized to achieve low-cost and high-performance devices, well-suited for the high-volume manufacturer. part number package temp. range tc1426coa 8-pin soic 0c to +70c tc1426cpa 8-pin pdip 0c to +70c tc1427coa 8-pin soic 0c to +70c tc1427cpa 8-pin pdip 0c to +70c tc1428coa 8-pin soic 0c to +70c tc1428cpa 8-pin pdip 0c to +70c tc1426cpa 1 2 3 4 nc 5 6 7 8 out a out b nc in a gnd in b v dd 2, 4 7, 5 inverting tc1427cpa 1 2 3 4 nc 5 6 7 8 out a out b nc in a gnd in b 2, 4 7, 5 noninverting tc1428cpa 1 2 3 4 nc 5 6 7 8 out a out b nc in a gnd in b 27 45 v dd v dd tc1426coa 1 2 3 4 nc 5 6 7 8 out a out b nc in a gnd in b v dd nc = no connection 2, 4 7, 5 inverting tc1427coa 1 2 3 4 nc 5 6 7 8 out a out b nc in a gnd in b 2, 4 7, 5 noninverting tc1428coa 1 2 3 4 nc 5 6 7 8 out a out b nc in a gnd in b 27 45 v dd v dd 8-pin pdip/soic 1.2a dual high-spe ed mosfet drivers
tc1426/tc1427/tc1428 ds21393c-page 2 ? 2006 microchip technology inc. functional block diagram input v + 2.5 a 500 a note: tc1428 has one inverting and one noninverting driver. ground any unused driver input. inverting output noninverting output (tc1426) (tc1427) gnd tc1426 inverting tc1427 noninverting tc1428 inverting/noninverting
? 2006 microchip technology inc. ds21393c-page 3 tc1426/tc1427/tc1428 1.0 electrical characteristics absolute maximum ratings* supply voltage ..................................................... +18v input voltage, any terminal ................................... v dd + 0.3v to gnd ? 0.3v power dissipation (t a 70c) pdip........................................................ 730 mw soic ....................................................... 470 mw derating factor pdip....................................................... 8 mw/ c soic ...................................................... 4 mw/ c operating temperature range c version ........................................ 0c to +70c storage temperature range.............. -65c to +150c *stresses above those listed under "absolute maximum ratings" may cause permanent damage to the device. these are stress ratings only and functional operation of the device at these or any other conditions above those indicated in the operation sections of the specifications is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. tc1426/tc1427/tc1428 electrical specifications electrical characteristics: t a = +25c, with 4.5v v dd 16v, unless otherwise noted. symbol parameter min typ max units test conditions input v ih logic 1, high input voltage 3 ? ? v v il logic 0, low input voltage ? ? 0.8 v i in input current -1 ? 1 a0v v in v dd output v oh high output voltage v dd ? 0.025 ? ? v figure 3-1, figure 3-2 v ol low output voltage ? ? 0.025 v figure 3-1, figure 3-2 r o output resistance ? ? 12 8 18 12 i out = 10 ma, v dd = 16v i pk peak output current ? 1.2 ? a i rev latch-up current withstand reverse current ? >500 ? ma switching time (note 1) t r rise time ? ? 35 nsec figure 3-1, figure 3-2 t f fall time ? ? 25 nsec figure 3-1, figure 3-2 t d1 delay time ? ? 75 nsec figure 3-1, figure 3-2 t d2 delay time ? ? 75 nsec figure 3-1, figure 3-2 power supply i s power supply current ? ? ? ? 9 0.5 ma v in = 3v (both inputs) v in = 0v (both inputs) note 1: switching times ensured by design.
tc1426/tc1427/tc1428 ds21393c-page 4 ? 2006 microchip technology inc. tc1426/tc1427/tc1428 electrical specifications (continued) electrical characteristics: over operating temperature range with 4.5v v dd 16v, unless otherwise noted. symbol parameter min typ max units test conditions input v ih logic 1, high input voltage 3 ? ? v v il logic 0, low input voltage ? ? 0.8 v i in input current -10 ? 10 a0v v in v dd output v oh high output voltage v dd ? 0.025 ? ? v figure 3-1, figure 3-2 v ol low output voltage ? ? 0.025 v figure 3-1, figure 3-2 r o output resistance ? ? 15 10 23 18 i out = 10 ma, v dd = 16v i rev latch-up current withstand reverse current ? >500 ? ma switching time (note 1) t r rise time ? ? 60 nsec figure 3-1, figure 3-2 t f fall time ? ? 40 nsec figure 3-1, figure 3-2 t d1 delay time ? ? 125 nsec figure 3-1, figure 3-2 t d2 delay time ? ? 125 nsec figure 3-1, figure 3-2 power supply i s power supply current ? ? ? ? 13 0.7 ma v in = 3v (both inputs) v in = 0v (both inputs) note 1: switching times ensured by design.
? 2006 microchip technology inc. ds21393c-page 5 tc1426/tc1427/tc1428 2.0 pin descriptions the descriptions of the pins are listed in table 2-1. table 2-1: pin function table pin no. (8-pin pdip, soic) symbol description 1 nc no connection. 2 in a control input a, ttl/cmos compatible logic input. 3 gnd ground. 4 in b control input b, ttl/cmos compatible logic input. 5 out b output b, cmos totem-pole output. 6v dd supply input, 4.5v to 16v. 7 out a output a, cmos totem-pole output. 8 nc no connection.
tc1426/tc1427/tc1428 ds21393c-page 6 ? 2006 microchip technology inc. 3.0 applications information 3.1 supply bypassing large currents are required to charge and discharge capacitive loads quickly. for example, charging a 1000 pf load to 16v in 25 nsec requires a 0.8a current from the device's power supply. to ensure low supply impedance over a wide frequency range, a parallel capacitor combination is recom- mended for supply bypassing. low-inductance ceramic mlc capacitors with short lead lengths (<0.5-in.) should be used. a 1.0 f film capacitor in parallel with one or two 0.1 f ceramic mlc capacitors normally provides adequate bypassing. 3.2 grounding the tc1426 and tc1428 contain inverting drivers. individual ground returns for the input and output circuits or a ground plane should be used. this will reduce negative feedback that causes degradation in switching speed characteristics. figure 3-1: inverting driver switching time 3.3 input stage the input voltage level changes the no-load or quiescent supply current. the n-channel mosfet input stage transistor drives a 2.5 ma current source load. with a logic ?1? input, the maximum quiescent supply current is 9 ma. logic ?0? input level signals reduce quiescent current to 500 a maximum. unused driver inputs must be connected to v dd or gnd . minimum power dissipation occurs for logic ?0? inputs for the tc1426/tc1427/tc1428. the drivers are designed with 100 mv of hysteresis. this provides clean transitions and minimizes output stage current spiking when changing states. input voltage thresholds are approximately 1.5v, making a logic ?1? input any voltage greater than 1.5v up to v dd . input current is less than 1 a over this range. the tc1426/tc1427/tc1428 may be directly driven by the tl494, sg1526/27, tc38c42, tc170 and similar switch-mode power supply integrated circuits. figure 3-2: noninverting driver switching time +5v 10% 90% 10% 90% 10% 90% v dd 1 f wima mks-2 0v 0v tc1426 (1/2 tc1428) 1 2 test circuit 0.1 f mlc input v dd = 16v output t r c l = 1000 pf t d1 t f t d2 input output v dd 0.1 f mlc input v dd = 16v output t r c l = 1000 pf t d1 t f t d2 input output 90% 10% 10% 10% 90% 1 f wima mks-2 tc1427 (1/2 tc1428) +5v 0v 0v 90% test circuit 1 2
? 2006 microchip technology inc. ds21393c-page 7 tc1426/tc1427/tc1428 4.0 typical characteristics note: the graphs and tables provided following this note are a statistical summary based on a limited number of samples and are provided for informational purposes only. the performance characteristics listed herein are not tested or guaranteed. in some graphs or tables, the data presented may be outside the specified operating range (e.g., outside specified power supply range) and therefore outside the warranted range. 550 440 330 220 110 0 579111315 time (nsec) v dd (v) 10,000 pf 4700 pf 2200 pf rise time vs. supply voltage 330 264 198 132 66 0 time (nsec) 10,000 pf 2200 pf 4700 pf 57 9111315 fall time vs. supply voltage t d1 time (nsec) 5 7 9 11 13 15 80 70 60 50 40 30 delay time vs. supply voltage t a = +25c t a = +25c c l = 1000 pf t a = +25c v dd (v) v dd (v) t d2 40 32 24 16 8 0 25 45 65 85 105 125 temperature ( c) time (nsec) rise and fall times vs. temperature 60 54 48 42 36 0 25 45 65 85 105 125 temperature ( c) time (nsec) delay time vs. temperature 30 24 18 12 6 0 100 520 940 1360 1780 2200 supply current (ma) capacitive load (pf) 500 khz 200 khz 20 khz supply current vs. capacitive load c l = 1000 pf v dd = +15v t a = +25c c l = 1000 pf v dd = +15v c l = 1000 pf v dd = +15v t d1 t d2 t fall t rise capacitive load (pf) 100 1000 10,000 1000 100 10 10 v dd time (nsec) 5 v dd 15 v dd rise time vs. capacitive load 1000 100 10 100 1000 10,000 capacitive load (pf) time (nsec) 5 v dd 10 v dd fall time vs. capacitive load 15 v dd 100 80 60 40 20 0 10 100 1000 10,000 v dd = 15v v dd = 10v v = 5v dd frequency (khz) supply current (ma) supply current vs. frequency c l = 1000 pf t a = +25c t a = +25c t a = +25c
tc1426/tc1427/tc1428 ds21393c-page 8 ? 2006 microchip technology inc. typical characteristics (continued) 100 ma 50 ma 10 ma 15 13 11 9 7 5 579111315 out () r low-state output resistance 50 42 34 26 18 10 579111315 100 ma 50 ma 10 ma high-state output resistance r out ( ) 10 -8 a (sec) 10 -9 10 -10 4 6 8 1012141618 crossover energy loss t a = +25c t a = +25c v dd (v) v dd (v) v dd (v) 20 15 10 5 0 0 50 100 150 200 300 400 s upply voltage (v) supply current ( a) quiescent power supply current vs. supply voltage both inputs logic 0 20 15 10 5 0 1 234 56 supply voltage (v) supply current (ma) both inputs logic 1 quiescent power supply current vs. supply voltage 200 0 400 600 800 1000 1200 1400 1600 0 10 20 30 40 50 60 70 80 90 100 110 120 ambient temperature (c) max. power (mw) 8 pin dip thermal derating curves 8 pin soic
? 2006 microchip technology inc. ds21393c-page 9 tc1426/tc1427/tc1428 5.0 packaging information 5.1 package marking information package marking data not available at this time. 5.2 taping form component taping orientation for 8-pin msop devices package carrier width (w) pitch (p) part per full reel reel size 8-pin msop 12 mm 8 mm 2500 13 in carrier tape, number of components per reel and reel size pin 1 user direction of feed standard reel component orientation for 713 suffix device w p component taping orientation for 8-pin soic (narrow) devices package carrier width (w) pitch (p) part per full reel reel size 8-pin soic (n) 12 mm 8 mm 2500 13 in carrier tape, number of components per reel and reel size standard reel component orientation for 713 suffix device pin 1 user direction of feed p w
tc1426/tc1427/tc1428 ds21393c-page 10 ? 2006 microchip technology inc. 5.3 package dimensions 3 min. pin 1 .260 (6.60) .240 (6.10) .045 (1.14) .030 (0.76) .070 (1.78) .040 (1.02) .400 (10.16) .348 (8.84) .200 (5.08) .140 (3.56) .150 (3.81) .115 (2.92) .110 (2.79) .090 (2.29) .022 (0.56) .015 (0.38) .040 (1.02) .020 (0.51) .015 (0.38) .008 (0.20) .310 (7.87) .290 (7.37) .400 (10.16) .310 (7.87) 8-pin plastic dip dimensions: inches (mm) .050 (1.27) typ. 8 max. pin 1 .244 (6.20) .228 (5.79) .157 (3.99) .150 (3.81) .197 (5.00) .189 (4.80) .020 (0.51) .013 (0.33) .010 (0.25) .004 (0.10) .069 (1.75) .053 (1.35) .010 (0.25) .007 (0.18) .050 (1.27) .016 (0.40) 8-pin soic dimensions: inches (mm)
? 2006 microchip technology inc. ds21393c-page 11 tc1426/tc1427/tc1428 the microchip web site microchip provides online support via our www site at www.microchip.com. this web site is used as a means to make files and information easily available to customers. accessible by using your favorite internet browser, the web site contains the following information: ? product support ? data sheets and errata, application notes and sample programs, design resources, user?s guides and hardware support documents, latest software releases and archived software ? general technical support ? frequently asked questions (faq), technical support requests, online discussion groups, microchip consultant program member listing ? business of microchip ? product selector and ordering guides, latest microchip press releases, listing of seminars and events, listings of microchip sales offices, distributors and factory representatives customer change notification service microchip?s customer notification service helps keep customers current on microchip products. subscribers will receive e-mail notification whenever there are changes, updates, revisions or errata related to a specified product family or development tool of interest. to register, access the microchip web site at www.microchip.com, click on customer change notification and follow the registration instructions. customer support users of microchip products can receive assistance through several channels: ? distributor or representative ? local sales office ? field application engineer (fae) ? technical support ? development systems information line customers should contact their distributor, representative or field application engineer (fae) for support. local sales offices are also available to help customers. a listing of sales offices and locations is included in the back of this document. technical support is available through the web site at: http://support.microchip.com
tc1426/tc1427/tc1428 ds21393c-page 12 ? 2006 microchip technology inc. reader response it is our intention to provide you with the best documentation possible to ensure successful use of your microchip prod- uct. if you wish to provide your comments on organization, clarity, subject matter, and ways in which our documentation can better serve you, please fax your comments to the technical publications manager at (480) 792-4150. please list the following information, and use this outline to provide us with your comments about this document. to : technical publications manager re: reader response total pages sent ________ from: name company address city / state / zip / country telephone: (_______) _________ - _________ application (optional): would you like a reply? y n device: literature number: questions: fax: (______) _________ - _________ ds21393c tc1426/tc1427/tc1428 1. what are the best features of this document? 2. how does this document meet your hardware and software development needs? 3. do you find the organization of this document easy to follow? if not, why? 4. what additions to the document do you think would enhance the structure and subject? 5. what deletions from the document could be made without affecting the overall usefulness? 6. is there any incorrect or misleading information (what and where)? 7. how would you improve this document?
? 2006 microchip technology inc. ds21393c-page 13 information contained in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates. it is your responsibility to ensure that your application meets with your specifications. microchip makes no representations or warranties of any kind whether express or implied, written or oral, statutory or otherwise, related to the information, including but not limited to its condition, quality, performance, merchantability or fitness for purpose . microchip disclaims all liability arising from this information and its use. use of microchip devices in life support and/or safety applications is entirely at the buyer?s risk, and the buyer agrees to defend, indemnify and hold harmless microchip from any and all damages, claims, suits, or expenses resulting from such use. no licenses are conveyed, implicitly or otherwise, under any microchip intellectual property rights. trademarks the microchip name and logo, the microchip logo, accuron, dspic, k ee l oq , micro id , mplab, pic, picmicro, picstart, pro mate, powersmart, rfpic, and smartshunt are registered trademarks of micr ochip technology incorporated in the u.s.a. and other countries. amplab, filterlab, migratable memory, mxdev, mxlab, seeval, smartsensor and the embedded control solutions company are registered trademarks of microchip technology incorporated in the u.s.a. analog-for-the-digital age, app lication maestro, dspicdem, dspicdem.net, dspicworks, ecan, economonitor, fansense, flexrom, fuzzylab, in-circuit serial programming, icsp, icepic, linear active thermistor, mindi, miwi, mpasm, mplib, mplink, pickit, picdem, picdem.net, piclab, pictail, powercal, powerinfo, powermate, powertool, real ice, rflab, rfpicdem, select mode, smart serial, smarttel, total endurance, uni/o, wiperlock and zena are tr ademarks of microchip technology incorporated in the u.s.a. and other countries. sqtp is a service mark of mi crochip technology incorporated in the u.s.a. all other trademarks mentioned herein are property of their respective companies. ? 2006, microchip technology incorporated, printed in the u.s.a., all rights reserved. printed on recycled paper. note the following details of the code protection feature on microchip devices: ? microchip products meet the specification cont ained in their particular microchip data sheet. ? microchip believes that its family of products is one of the most secure families of its kind on the market today, when used i n the intended manner and under normal conditions. ? there are dishonest and possibly illegal methods used to breach the code protection feature. all of these methods, to our knowledge, require using the microchip produc ts in a manner outside the operating specif ications contained in microchip?s data sheets. most likely, the person doing so is engaged in theft of intellectual property. ? microchip is willing to work with the customer who is concerned about the integrity of their code. ? neither microchip nor any other semiconduc tor manufacturer can guarantee the security of their code. code protection does not mean that we are guaranteeing the product as ?unbreakable.? code protection is constantly evolving. we at microchip are co mmitted to continuously improvin g the code protection features of our products. attempts to break microchip?s code protection feature may be a violation of the digital millennium copyright act. if such acts allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that act. microchip received iso/ts-16949:2002 certification for its worldwide headquarters, design and wafer fabrication facilities in chandler and tempe, arizona, gresham, oregon and mountain view, california. the company?s quality system processes and procedures are for its picmicro ? 8-bit mcus, k ee l oq ? code hopping devices, serial eeproms, microperipherals, nonvolatile memory and analog products. in addition, microchip?s quality system for the design and manufacture of development systems is iso 9001:2000 certified.
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