to our customers, old company name in catalogs and other documents on april 1 st , 2010, nec electronics corporation merged with renesas technology corporation, and renesas electronics corporation took over all the business of both companies. therefore, although the old company name remains in this document, it is a valid renesas electronics document. we appreciate your understanding. renesas electronics website: http://www.renesas.com april 1 st , 2010 renesas electronics corporation issued by: renesas electronics corporation ( http://www.renesas.com ) send any inquiries to http://www.renesas.com/inquiry .
notice 1. all information included in this document is current as of th e date this document is issued. such information, however, is subject to change without any prior notice. before purchasing or using any renesas electronics products listed herein, please confirm the latest product information with a renesas electronics sales office. also, please pay regular and careful attention to additional and different information to be disclosed by renesas electronics such as that disclosed through our website. 2. renesas electronics does not assume any liability for infringement of patents, copyrights, or other intellectual property ri ghts of third parties by or arising from the use of renesas electronics products or technical information described in this document . no license, express, implied or otherwise, is granted hereby under any patents, copyrights or other intellectual property right s of renesas electronics or others. 3. you should not alter, modify, copy, or otherwise misappropriate any renesas electronics product, whether in whole or in part . 4. descriptions of circuits, software and other related information in this document are provided only to illustrate the operat ion of semiconductor products and application examples. you are fully responsible for the incorporation of these circuits, software, and information in the design of your equipment. renesas electronics assumes no responsibility for any losses incurred by you or third parties arising from the use of these circuits, software, or information. 5. when exporting the products or technology described in this document, you should comply with the applicable export control laws and regulations and follow the procedures required by such laws and regulations. you should not use renesas electronics products or the technology de scribed in this document for any purpose re lating to military applications or use by the military, including but not limited to the development of weapons of mass destruction. renesas electronics products and technology may not be used for or incorporated into any products or systems whose manufacture, use, or sale is prohibited under any applicable domestic or foreign laws or regulations. 6. renesas electronics has used reasonable care in preparing the information included in this document, but renesas electronics does not warrant that such information is error free. renesas electronics assumes no liability whatsoever for any damages incurred by you resulting from errors in or om issions from the information included herein. 7. renesas electronics products are classified according to the following three quality grades: ?standard?, ?high quality?, an d ?specific?. the recommended applications for each renesas electronics product depends on the product?s quality grade, as indicated below. you must check the quality grade of each renesas electronics product before using it in a particular application. you may not use any renesas electronics product for any application categorized as ?specific? without the prior written consent of renesas electronics. further, you may not use any renesas electronics product for any application for which it is not intended without the prior written consent of renesas electronics. renesas electronics shall not be in any way liable for any damages or losses incurred by you or third parties arising from the use of any renesas electronics product for a n application categorized as ?specific? or for which the product is not intended where you have failed to obtain the prior writte n consent of renesas electronics. the quality grade of each renesas electronics product is ?standard? unless otherwise expressly specified in a renesas electronics data sheets or data books, etc. ?standard?: computers; office equipment; communications equipment; test and measurement equipment; audio and visual equipment; home electronic appliances; machine tools; personal electronic equipment; and industrial robots. ?high quality?: transportation equipment (automobiles, trains, ship s, etc.); traffic control systems; anti-disaster systems; an ti- crime systems; safety equipment; and medical equipment not specifically designed for life support. ?specific?: aircraft; aerospace equipment; submersible repeaters; nuclear reactor control systems; medical equipment or systems for life support (e.g. artificial life support devices or systems), surgical implantations, or healthcare intervention (e.g. excision, etc.), and any other applications or purposes that pose a direct threat to human life. 8. you should use the renesas electronics products described in this document within the range specified by renesas electronics , especially with respect to the maximum rating, operating supply voltage range, movement power voltage range, heat radiation characteristics, installation and other product characteristics. renesas electronics shall have no liability for malfunctions o r damages arising out of the use of renesas electronics products beyond such specified ranges. 9. although renesas electronics endeavors to improve the quality and reliability of its products, semiconductor products have specific characteristics such as the occurrence of failure at a certain rate and malfunctions under certain use conditions. fur ther, renesas electronics products are not subject to radiation resistance design. please be sure to implement safety measures to guard them against the possibility of physical injury, and injury or damage caused by fire in the event of the failure of a renesas electronics product, such as safety design for hardware and software including but not limited to redundancy, fire control and malfunction prevention, appropriate treatment for aging degradation or any other appropriate measures. because the evaluation of microcomputer software alone is very difficult, please evaluate the safety of the final products or system manufactured by you. 10. please contact a renesas electronics sales office for details as to environmental matters such as the environmental compatibility of each renesas electronics product. please use re nesas electronics products in compliance with all applicable laws and regulations that regulate the inclusion or use of c ontrolled substances, including without limitation, the eu rohs directive. renesas electronics assumes no liability for damages or losses occurring as a result of your noncompliance with applicable laws and regulations. 11. this document may not be reproduced or duplicated, in any fo rm, in whole or in part, without prior written consent of renes as electronics. 12. please contact a renesas electronics sales office if you have any questions regarding the information contained in this document or renesas electronics products, or if you have any other inquiries. (note 1) ?renesas electronics? as used in this document means renesas electronics corporation and also includes its majority- owned subsidiaries. (note 2) ?renesas electronics product(s)? means any product developed or manufactured by or for renesas electronics.
rev.2.00 mar 30, 2006 page 1 of 6 hd74hct244 octal buffers/line drivers/line receivers (with inverted 3-state outputs) rej03d0664?0200 (previous ade-205-553) rev.2.00 mar 30, 2006 description the hd74hct244 is a non-inverting buffer and has two active low enable (1 g and 2 g ). each enable independently controls 4 buffers. this device does not have schmitt trigger inputs. features ? lsttl output logic level compatibility as well as cmos output compatibility ? high speed operation: t pd (a to y) = 10 ns typ (c l = 50 pf) ? high output current: fa nout of 15 lsttl loads ? wide operating voltage: v cc = 4.5 to 5.5 v ? low input current: 1 a max ? low quiescent supply current: i cc (static) = 4 a max (ta = 25c) ? ordering information part name package type package code (previous code) package abbreviation taping abbreviation (quantity) hd74hct244p dilp-20 pin prdp0020ac-b (dp-20nev) p ? hd74hct244fpel sop-20 pin (jeita) prsp0020dd-b (fp-20dav) fp el (2,000 pcs/reel) hd74hct244rpel sop-20 pin (jedec) prsp0020dc-a (fp-20dbv) rp el (1,000 pcs/reel) hd74hct244tell tssop-20 pin ptsp0020jb-a (ttp-20dav) t ell (2,000 pcs/reel) note: please consult the sales office for the above package availability. function table inputs output g a y h x z l h h l l l h : high level l : low level x : irrelevant z : off (high-impedance) state of a 3-state output
hd74hct244 rev.2.00 mar 30, 2006 page 2 of 6 pin arrangement 1 2 3 4 5 6 7 8 9 10 1 g 1a 1 2y 4 1a 2 2y 3 1a 3 2y 2 1a 4 2y 1 gnd v c c 2 g 1y 1 2a 4 1y 2 2a 3 1y 3 2a 2 1y 4 2a 1 20 19 18 17 16 15 14 13 12 11 (top view) logic diagram to three other inverters input a v cc y one of 8 inverters strobe g absolute maximum ratings item symbol ratings unit supply voltage range v cc ?0.5 to 7.0 v input / output voltage v in , v out ?0.5 to v cc +0.5 v input / output diode current i ik , i ok 20 ma output current i o 35 ma v cc , gnd current i cc or i gnd 75 ma power dissipation p t 500 mw storage temperature tstg ?65 to +150 c note: the absolute maximum ratings are values, which must not individually be exceeded, and furthermore, no two of which may be realized at the same time.
hd74hct244 rev.2.00 mar 30, 2006 page 3 of 6 recommended operating conditions item symbol ratings unit conditions supply voltage v cc 4.5 to 5.5 v input / output voltage v in , v out 0 to v cc v operating temperature ta ?40 to 85 c input rise / fall time *1 t r , t f 0 to 500 ns v cc = 4.5 v notes: 1. this item guarantees maxi mum limit when one input switches. waveform: refer to test circuit of switching characteristics. electrical characteristics ta = 25c ta = ?40 to+85c item symbol v cc (v) min typ max min max unit test conditions v ih 4.5 to 5.5 2.0 ? ? 2.0 ? v input voltage v il 4.5 to 5.5 ? ? 0.8 ? 0.8 v 4.5 4.4 ? ? 4.4 ? i oh = ?20 a v oh 4.5 4.18 ? ? 4.13 ? v vin = v ih or v il i oh = ?6 ma 4.5 ? ? 0.1 ? 0.1 i ol = 20 a output voltage v ol 4.5 ? ? 0.26 ? 0.33 v vin = v ih or v il i ol = 6 ma off-state output current i oz 5.5 ? ? 0.5 ? 5.0 a vin = v ih or v il , vout = v cc or gnd input current iin 5.5 ? ? 0.1 ? 1.0 a vin = v cc or gnd quiescent current i cc 5.5 ? ? 4.0 ? 40 a vin = v cc or gnd, iout = 0 a switching characteristics (c l = 50 pf, input t r = t f = 6 ns) ta = 25c ta = ?40 to +85c item symbol v cc (v) min typ max min max unit test conditions t phl 4.5 ? 11 20 ? 25 propagation delay time t plh 4.5 ? 9 20 ? 25 ns t zl 4.5 ? 13 30 ? 38 output enable time t zh 4.5 ? 12 30 ? 38 ns t lz 4.5 ? 14 30 ? 38 output disable time t hz 4.5 ? 17 30 ? 38 ns output rise/fall time t tlh / t thl 4.5 ? 4 12 ? 15 ns input capacitance cin ? ? 5 10 ? 10 pf test circuit v cc open gnd c = 50 pf 1 g , 2 g z out = 50 ? input 1 k ? v cc v cc v cc s1 l output test s1 t / t plh phl open gnd t / t zh hz t / t zl lz 1a1 to 2a4 1y1 to 2y4 note : 1. c l includes probe and jig capacitance. see function table pulse generator
hd74hct244 rev.2.00 mar 30, 2006 page 4 of 6 waveforms t plh t phl v oh v oh v ol v ol 0 v v cc 1.3 v 1.3 v 1.3 v 1.3 v 1.3 v 1.3 v ? waveform ? 1 waveform ? 2 input a output y 10 % 90 % t f 10 % 90 % t r t r t f t zl 0 v v ol v cc v oh t lz t zh t hz 10 % 10 % 90 % 90 % 1.3 v 1.3 v input g waveform ? a waveform ? b 90 % 10 % 10 % 90 % 10 % 90 % t thl t tlh notes : 1. input waveform : prr 1 mhz, duty cycle 50%, t r 6 ns, t f 6 ns 2. waveform? a is for an output with internal conditions such that the output is low except when disabled by the output control. 3. waveform? b is for an output with internal conditions such that the output is high except when disabled by the output control. 4. the output are measured one at a time with one transition per measurement.
hd74hct244 rev.2.00 mar 30, 2006 page 5 of 6 package dimensions 7.62 max nom min dimension in millimeters symbol reference 24.50 6.30 5.08 a 1 z b 3 d e a b p c e l e 1 0.51 0.56 1.30 0.19 0.25 0.31 2.29 2.54 2.79 0 15 25.40 7.00 0.40 0.48 1.27 2.54 1 p 1 3 1 10 20 11 e b a l a z e c e d b 0.89 ( ni/pd/au plating ) p-dip20-6.3x24.5-2.54 1.26g mass[typ.] dp-20nev prdp0020ac-b renesas code jeita package code previous code 0.935 0.15 1.27 10.00 10.65 0.40 0.34 a 1 13.2 max nom min dimension in millimeters symbol reference 2.65 1.27 0.70 0.40 7.50 0.30 0.20 0.10 0.46 0.30 0.25 0.20 10.40 8 0 0.12 1.45 12.80 l 1 z h e y x c b p a 2 e d b 1 c 1 e e l a 11 20 10 f *1 *2 *3 p m x y 1 e index mark e h d z b a terminal cross section ( ni/pd/au plating ) p c b 1 1 detail f l l a note) 1. dimensions"*1 (nom)"and"*2" @ do not include mold flash. 2. dimension"*3"does not @ include trim offset. p-sop20-7.5x12.8-1.27 0.52g mass[typ.] fp-20dbv prsp0020dc-a renesas code jeita package code previous code
hd74hct244 rev.2.00 mar 30, 2006 page 6 of 6 0.80 0.15 1.27 7.50 8.00 0.40 0.34 a 1 13.0 max nom min dimension in millimeters symbol reference 2.20 0.90 0.70 0.50 5.50 0.20 0.10 0.00 0.46 0.25 0.20 0.15 7.80 8 0 0.12 1.15 12.60 l 1 z h e y x c b p a 2 e d b 1 c 1 e e l a 20 11 10 f *1 *2 *3 p m x y 1 e index mark d e h b z a terminal cross section ( ni/pd/au plating ) p c b 1 1 detail f l l a note) 1. dimensions"*1 (nom)"and"*2" do not include mold flash. 2. dimension"*3"does not include trim offset. p-sop20-5.5x12.6-1.27 0.31g mass[typ.] fp-20dav prsp0020dd-b renesas code jeita package code previous code note) 1. dimensions"*1 (nom)"and"*2" do not include mold flash. 2. dimension"*3"does not include trim offset. index mark e 1 y xm p *3 *2 *1 f 10 20 11 a d e h z b terminal cross section ( ni/pd/au plating ) p c b 1 1 detail f a l l 0.65 0.10 0.65 6.20 6.60 0.20 0.15 a 1 6.80 max nom min dimension in millimeters symbol reference 1.10 0.6 0.5 0.4 4.40 0.10 0.07 0.03 0.25 0.20 0.15 0.10 6.40 8 0 0.13 1.0 6.50 l 1 z h e y x c b p a 2 e d b 1 c 1 e e l a p-tssop20-4.4x6.5-0.65 0.07g mass[typ.] ttp-20dav ptsp0020jb-a renesas code jeita package code previous code
keep safety first in your circuit designs! 1. renesas technology corp. puts the maximum effort into making semiconductor products better and more reliable, but there is a lways the possibility that trouble may occur with them. trouble with semiconductors may lead to personal injury, fire or property damage. remember to give due consideration to safety when making your circuit designs, with appropriate measures such as (i) placeme nt of substitutive, auxiliary circuits, (ii) use of nonflammable material or (iii) prevention against any malfunction or mishap. notes regarding these materials 1. these materials are intended as a reference to assist our customers in the selection of the renesas technology corp. product best suited to the customer's application; they do not convey any license under any intellectual property rights, or any other rights, belonging to renesas t echnology corp. or a third party. 2. renesas technology corp. assumes no responsibility for any damage, or infringement of any third-party's rights, originating in the use of any product data, diagrams, charts, programs, algorithms, or circuit application examples contained in these materials. 3. all information contained in these materials, including product data, diagrams, charts, programs and algorithms represents i nformation on products at the time of publication of these materials, and are subject to change by renesas technology corp. without notice due to product improvement s or other reasons. it is therefore recommended that customers contact renesas technology corp. or an authorized renesas technology corp. product distrib utor for the latest product information before purchasing a product listed herein. the information described here may contain technical inaccuracies or typographical errors. renesas technology corp. assumes no responsibility for any damage, liability, or other loss rising from these inaccuracies o r errors. please also pay attention to information published by renesas technology corp. by various means, including the renesas techn ology corp. semiconductor home page (http://www.renesas.com). 4. when using any or all of the information contained in these materials, including product data, diagrams, charts, programs, a nd algorithms, please be sure to evaluate all information as a total system before making a final decision on the applicability of the information and products. renesas technology corp. assumes no responsibility for any damage, liability or other loss resulting from the information contained herein. 5. renesas technology corp. semiconductors are not designed or manufactured for use in a device or system that is used under ci rcumstances in which human life is potentially at stake. please contact renesas technology corp. or an authorized renesas technology corp. product distributor when considering the use of a product contained herein for any specific purposes, such as apparatus or systems for transportation, vehicular, medical, aerosp ace, nuclear, or undersea repeater use. 6. the prior written approval of renesas technology corp. is necessary to reprint or reproduce in whole or in part these materi als. 7. if these products or technologies are subject to the japanese export control restrictions, they must be exported under a lic ense from the japanese government and cannot be imported into a country other than the approved destination. any diversion or reexport contrary to the export control laws and regulations of japan and/or the country of destination is prohibited. 8. please contact renesas technology corp. for further details on these materials or the products contained therein. sales strategic planning div. nippon bldg., 2-6-2, ohte-machi, chiyoda-ku, tokyo 100-0004, japan http://www.renesas.com refer to " http://www.renesas.com/en/network " for the latest and detailed information. renesas technology america, inc. 450 holger way, san jose, ca 95134-1368, u.s.a tel: <1> (408) 382-7500, fax: <1> (408) 382-7501 renesas technology europe limited dukes meadow, millboard road, bourne end, buckinghamshire, sl8 5fh, u.k. tel: <44> (1628) 585-100, fax: <44> (1628) 585-900 renesas technology (shanghai) co., ltd. unit 204, 205, aziacenter, no.1233 lujiazui ring rd, pudong district, shanghai, china 200120 tel: <86> (21) 5877-1818, fax: <86> (21) 6887-7898 renesas technology hong kong ltd. 7th floor, north tower, world finance centre, harbour city, 1 canton road, tsimshatsui, kowloon, hong kong tel: <852> 2265-6688, fax: <852> 2730-6071 renesas technology taiwan co., ltd. 10th floor, no.99, fushing north road, taipei, taiwan tel: <886> (2) 2715-2888, fax: <886> (2) 2713-2999 renesas technology singapore pte. ltd. 1 harbour front avenue, #06-10, keppel bay tower, singapore 098632 tel: <65> 6213-0200, fax: <65> 6278-8001 renesas technology korea co., ltd. kukje center bldg. 18th fl., 191, 2-ka, hangang-ro, yongsan-ku, seoul 140-702, korea tel: <82> (2) 796-3115, fax: <82> (2) 796-2145 renesas technology malaysia sdn. bhd unit 906, block b, menara amcorp, amcorp trade centre, no.18, jalan persiaran barat, 46050 petaling jaya, selangor darul ehsan, malaysia tel: <603> 7955-9390, fax: <603> 7955-9510 renesas sales offices ? 200 6. re nesas technology corp ., all rights reser v ed. printed in ja pan. colophon .6.0
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