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scls423f ? june 1 998 ? revised september 2003 1 post office box 655303 ? dallas, texas 75265 operating range 2-v to 5.5-v v cc 8-bit serial-in, parallel-out shift registers with storage independent direct overriding clears on shift and storage registers independent clocks for shift and storage registers latch-up performance exceeds 100 ma per jesd 78, class ii esd protection exceeds jesd 22 ? 2000-v human-body model (a114-a) ? 200-v machine model (a115-a) ? 1000-v charged-device model (c101) description/ordering information the ?ahc594 devices contain an 8-bit serial-in, parallel-out shift register that feeds an 8-bit d-type storage register. separate clocks and direct overriding clear (srclr , rclr ) inputs are provided on the shift and storage registers. a serial (q h ) output is provided for cascading purposes. the shift register (srclk) and storage register (rclk) clocks are positive-edge triggered. if the clocks are tied together, the shift register always is one clock pulse ahead of the storage register. ordering information t a package ? orderable part number top-side marking pdip ? n tube sn74ahc594n sn74ahc594n soic ? d tube sn74ahc594d ahc594 soic ? d tape and reel sn74ahc594dr ahc594 ?40 c to 85 c sop ? ns tape and reel sn74ahc594nsr ahc594 ?40 c to 85 c ssop ? db tape and reel sn74ahc594dbr ha594 tssop ? pw tube sn74ahc594pw ha594 tssop ? pw tape and reel sn74ahc594pwr ha594 cdip ? j tube snj54ahc594j snj54ahc594j ?55 c to 125 c cfp ? w tube snj54ahc594w snj54ahc594w ?55 c to 125 c lccc ? fk tube snj54ahc594fk snj54ahc594fk ? package drawings, standard packing quantities, thermal data, symbolization, and pcb design guidelines are available at www.ti.com/sc/package. copyright ? 2003, texas instruments incorporated please be aware that an important notice concerning avail ability, standard warranty, and use in critical applications of texas instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. sn54ahc594 ...j or w p ackage sn74ahc594 . . . d, db, n, ns, or pw package (top view) sn54ahc594 . . . fk package (top view) nc ? no internal connection 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 q b q c q d q e q f q g q h gnd v cc q a ser rclr rclk srclk srclr q h 3212019 91011 1213 4 5 6 7 8 18 17 16 15 14 ser rclr nc rclk srclk q d q e nc q f q g q nc srclr h gnd nc c q b v cc q a q h q
scls423f ? june 1998 ? revised september 2003 2 post office box 655303 ? dallas, texas 75265 function table inputs function ser srclk srclr rclk rclr function x x l x x shift register is cleared. l h x x first stage of shift register goes low. other stages store the data of previous stage, respectively. h h x x first stage of shift register goes high. other stages store the data of previous stage, respectively. l h x x shift register state is not changed. x x x x l storage register is cleared. x xx h shift register data is stored in the storage register. x x x h storage register state is not changed.
scls423f ? june 1 998 ? revised september 2003 3 post office box 655303 ? dallas, texas 75265 logic diagram (positive logic) r 3d c3 1d c1 r r 3d c3 2d c2 r r 3d c3 2d c2 r r 3d c3 2d c2 r r 3d c3 2d c2 r r 3d c3 2d c2 r r 3d c3 2d c2 r r 3d c3 2d c2 r 13 12 10 11 14 15 1 2 3 4 5 6 7 9 q a q b q c q d q e q f q g q h q h rclr srclr rclk srclk ser pin numbers shown are for the d, db, j, n, ns, pw, and w packages. q q q q q q q q q q q q q q q q
scls423f ? june 1998 ? revised september 2003 4 post office box 655303 ? dallas, texas 75265 timing diagram srclk ser rclk srclr rclr q a q b q c q d q e q f q g q h q h
scls423f ? june 1 998 ? revised september 2003 5 post office box 655303 ? dallas, texas 75265 absolute maximum ratings over operating free-air temperature range (unless otherwise noted) ? supply voltage range, v cc ?0.5 v to 7 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . input voltage range, v i (see note 1) ?0.5 v to 7 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . output voltage range, v o (see note 1) ?0.5 v to v cc + 0.5 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . input clamp current, i ik (v i < 0) ?20 ma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . output clamp current, i ok (v o < 0 or v o > v cc ) 20 ma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . continuous output current, i o (v o = 0 to v cc ) 25 ma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . continuous current through v cc or gnd 75 ma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . package thermal impedance, ja (see note 2): d package 73 c/w . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . db package 82 c/w . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . n package 67 c/w . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ns package 64 c/w . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . pw package 108 c/w . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . storage temperature range, t stg ?65 c to 150 c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ? stresses beyond those listed under ?absolute maximum ratings? may cause permanent damage to the device. these are stress ratings only, a nd functional operation of the device at these or any other conditions beyond those indicated under ?recommended operating conditi ons? is not implied. exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. notes: 1. the input and output voltage ratings may be exceeded if the input and output current ratings are observed. 2. the package thermal impedance is calculated in accordance with jesd 51-7. recommended operating conditions (see note 3) sn54ahc594 sn74ahc594 unit min max min max unit v cc supply voltage 2 5.5 2 5.5 v v cc = 2 v 1.5 1.5 v ih high-level input voltage v cc = 3 v 2.1 2.1 v v ih high-level input voltage v cc = 5.5 v 3.85 3.85 v v cc = 2 v 0.5 0.5 v il low-level input voltage v cc = 3 v 0.9 0.9 v v il low-level input voltage v cc = 5.5 v 1.65 1.65 v v i input voltage 0 5.5 0 5.5 v v o output voltage 0 v cc 0 v cc v v cc = 2 v ?50 ?50 a i oh high-level output current v cc = 3.3 v 0.3 v ?4 ?4 ma i oh high-level output current v cc = 5 v 0.5 v ?8 ?8 ma v cc = 2 v 50 50 a i ol low-level output current v cc = 3.3 v 0.3 v 4 4 ma i ol low-level output current v cc = 5 v 0.5 v 8 8 ma t/ v input transition rise or fall rate v cc = 3.3 v 0.3 v 100 100 ns/v t/ v input transition rise or fall rate v cc = 5 v 0.5 v 20 20 ns/v t a operating free-air temperature ?55 125 ?40 85 c note 3: all unused inputs of the device must be held at v cc or gnd to ensure proper device operation. refer to the ti application report, implications of slow or floating cmos inputs , literature number scba004.
scls423f ? june 1998 ? revised september 2003 6 post office box 655303 ? dallas, texas 75265 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) parameter test conditions v cc t a = 25 c sn54ahc594 sn74ahc594 unit parameter test conditions v cc min typ max min max min max unit 2 v 1.9 2 1.9 1.9 i oh = ?50 a 3 v 2.9 3 2.9 2.9 v i oh = ?50 a 4.5 v 4.4 4.5 4.4 4.4 v v oh i oh = ?4 ma 3 v 2.58 2.48 2.48 v q h ,i oh = ?4 ma 4.5 v 3.94 3.8 3.8 q a ?q h , i oh = ?8 ma 4.5 v 3.94 3.8 3.8 2 v 0.1 0.1 0.1 i ol = 50 a 3 v 0.1 0.1 0.1 v i ol = 50 a 4.5 v 0.1 0.1 0.1 v v ol i ol = 4 ma 3 v 0.36 0.5 0.44 v q h , i ol = 4 ma 4.5 v 0.36 0.5 0.44 q a ?q h, i ol = 8 ma 4.5 v 0.36 0.5 0.44 i i v i = 5.5 v or gnd 0 v to 5.5 v 0.1 1* 1 a i cc v i = v cc or gnd, i o = 0 5.5 v 4 40 40 a c i v i = v cc or gnd 5 v 2 10 10 pf * on products compliant to mil-prf-38535, this parameter is not production tested at v cc = 0 v. timing requirements over recommended operating free-air temperature range, v cc = 3.3 v 0.3 v (unless otherwise noted) (see figure 1) t a = 25 c sn54ahc594 sn74ahc594 unit min max min max min max unit t w pulse duration rclk or srclk high or low 5.5 5.5 5.5 ns t w pulse duration rclr or srclr low 5 5 5 ns ser before srclk 3.5 3.5 3.5 srclk before rclk ? 8 8.5 8.5 t su setup time srclr low before rclk 8 9 9 ns t su setup time srclr high (inactive) before srclk 4.2 4.8 4.8 ns rclr high (inactive) before rclk 4.6 5.3 5.3 t h hold time ser after srclk 1.5 1.5 1.5 ns ? this setup time allows the storage register to receive stable data from the shift register. the clocks can be tied together, in which case the shift register is one clock pulse ahead of the storage register.
scls423f ? june 1 998 ? revised september 2003 7 post office box 655303 ? dallas, texas 75265 timing requirements over recommended operating free-air temperature range, v cc = 5 v 0.5 v (unless otherwise noted) (see figure 1) t a = 25 c sn54ahc594 sn74ahc594 unit min max min max min max unit t w pulse duration rclk or srclk high or low 5 5 5 ns t w pulse duration rclr or srclr low 5.2 5.2 5.2 ns ser before srclk 3 3 3 srclk before rclk ? 5 5 5 t su setup time srclr low before rclk 5 5 5 ns t su setup time srclr high (inactive) before srclk 2.9 3.3 3.3 ns rclr high (inactive) before rclk 3.2 3.7 3.7 t h hold time ser after srclk 2 2 2 ns ? this setup time allows the storage register to receive stable data from the shift register. the clocks can be tied together, in which case the shift register is one clock pulse ahead of the storage register. switching characteristics over recommended operating free-air temperature range, v cc = 3.3 v 0.3 v (unless otherwise noted) (see figure 1) parameter from to load t a = 25 c sn54ahc594 sn74ahc594 unit parameter from (input) to (output) load capacitance min typ max min max min max unit f max c l = 15 pf 80* 120* 70* 70 mhz f max c l = 50 pf 55 105 50 50 mhz t plh rclk q a ?q h c l = 15 pf 4.6* 8* 1* 8.5* 1 8.5 ns t phl rclk q a ?q h c l = 15 pf 4.9* 8.2* 1* 8.8* 1 8.8 ns t plh srclk q h c l = 15 pf 5.4* 9.1* 1* 9.7* 1 9.7 ns t phl srclk q h c l = 15 pf 5.5* 9.2* 1* 9.9* 1 9.9 ns t phl rclr q a ?q h c l = 15 pf 6* 9.8* 1* 10.6* 1 10.6 ns t phl srclr q h c l = 15 pf 5.6* 9.2* 1* 10* 1 10 ns t plh rclk q a ?q h c l = 50 pf 6.9 10.5 1 11.1 1 11.1 ns t phl rclk q a ?q h c l = 50 pf 8.1 11.9 1 13.1 1 13.1 ns t plh srclk q h c l = 50 pf 7.7 11.7 1 12.4 1 12.4 ns t phl srclk q h c l = 50 pf 8.4 12.5 1 13.9 1 13.9 ns t phl rclr q a ?q h c l = 50 pf 9.1 13.1 1 14.4 1 14.4 ns t phl srclr q h c l = 50 pf 8.5 12.4 1 14 1 14 ns * on products compliant to mil-prf-38535, this parameter is not production tested.
scls423f ? june 1998 ? revised september 2003 8 post office box 655303 ? dallas, texas 75265 switching characteristics over recommended operating free-air temperature range, v cc = 5 v 0.5 v (unless otherwise noted) (see figure 1) parameter from to load t a = 25 c sn54ahc594 sn74ahc594 unit parameter from (input) to (output) load capacitance min typ max min max min max unit f max c l = 15 pf 135* 170* 115* 115 mhz f max c l = 50 pf 120 140 95 95 mhz t plh rclk q a ?q h c l = 15 pf 3.3* 6.2* 1* 6.5* 1 6.5 ns t phl rclk q a ?q h c l = 15 pf 3.7* 6.5* 1* 6.9* 1 6.9 ns t plh srclk q h c l = 15 pf 3.7* 6.8* 1* 7.2* 1 7.2 ns t phl srclk q h c l = 15 pf 4.1* 7.2* 1* 7.6* 1 7.6 ns t phl rclr q a ?q h c l = 15 pf 4.5* 7.6* 1* 8.2* 1 8.2 ns t phl srclr q h c l = 15 pf 4.1* 7.1* 1* 7.6* 1 7.6 ns t plh rclk q a ?q h c l = 50 pf 4.9 7.8 1 8.3 1 8.3 ns t phl rclk q a ?q h c l = 50 pf 5.8 8.9 1 9.7 1 9.7 ns t plh srclk q h c l = 50 pf 5.5 8.6 1 9.1 1 9.1 ns t phl srclk q h c l = 50 pf 6 9.2 1 10.1 1 10.1 ns t phl rclr q a ?q h c l = 50 pf 6.6 10 1 10.7 1 10.7 ns t phl srclr q h c l = 50 pf 6 9.2 1 10.1 1 10.1 ns * on products compliant to mil-prf-38535, this parameter is not production tested. noise characteristics, v cc = 5 v, c l = 50 pf, t a = 25 c (see note 4) parameter sn74ahc594 unit parameter min typ max unit v ol(p) quiet output, maximum dynamic v ol 1 v v ol(v) quiet output, minimum dynamic v ol ?0.6 v v oh(v) quiet output, minimum dynamic v oh 3.8 v v ih(d) high-level dynamic input voltage 3.5 v v il(d) low-level dynamic input voltage 1.5 v note 4: characteristics are for surface-mount packages only. operating characteristics, v cc = 5 v, t a = 25 c parameter test conditions typ unit c pd power dissipation capacitance no load, f = 1 mhz 112 pf
scls423f ? june 1 998 ? revised september 2003 9 post office box 655303 ? dallas, texas 75265 parameter measurement information 50% v cc v cc v cc 0 v 0 v t h t su voltage waveforms setup and hold times data input t plh t phl t phl t plh v oh v oh v ol v ol v cc 0 v 50% v cc 50% v cc input out-of-phase output in-phase output timing input 50% v cc voltage waveforms propagation delay times inverting and noninverting outputs output control output waveform 1 s1 at v cc (see note b) output waveform 2 s1 at gnd (see note b) v ol v oh t pzl t pzh t plz t phz v cc 0 v 50% v cc v ol + 0.3 v 50% v cc 0 v v cc voltage waveforms enable and disable times low- and high-level enabling t plh /t phl t plz /t pzl t phz /t pzh open drain open v cc gnd v cc test s1 v cc 0 v 50% v cc t w voltage waveforms pulse duration input notes: a. c l includes probe and jig capacitance. b. waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control. c. all input pulses are supplied by generators having the following characteristics: prr 1 mhz, z o = 50 ? , t r 3 ns, t f 3 ns. d. the outputs are measured one at a time with one input transition per measurement. from output under test c l (see note a) load circuit for 3-state and open-drain outputs s1 v cc r l = 1 k ? gnd from output under test c l (see note a) test point load circuit for totem-pole outputs open 50% v cc 50% v cc 50% v cc 50% v cc 50% v cc 50% v cc 50% v cc 50% v cc v oh ? 0.3 v figure 1. load circuit and voltage waveforms
packaging information orderable device status (1) package type package drawing pins package qty eco plan (2) lead/ball finish msl peak temp (3) sn74ahc594d active soic d 16 40 green (rohs & no sb/br) cu nipdau level-1-260c-unlim sn74ahc594dbr active ssop db 16 2000 green (rohs & no sb/br) cu nipdau level-1-260c-unlim sn74ahc594dbre4 active ssop db 16 2000 green (rohs & no sb/br) cu nipdau level-1-260c-unlim sn74ahc594de4 active soic d 16 40 green (rohs & no sb/br) cu nipdau level-1-260c-unlim sn74ahc594dr active soic d 16 2500 green (rohs & no sb/br) cu nipdau level-1-260c-unlim SN74AHC594DRE4 active soic d 16 2500 green (rohs & no sb/br) cu nipdau level-1-260c-unlim sn74ahc594n active pdip n 16 25 pb-free (rohs) cu nipdau level-nc-nc-nc sn74ahc594ne4 active pdip n 16 25 pb-free (rohs) cu nipdau level-nc-nc-nc sn74ahc594nsr active so ns 16 2000 green (rohs & no sb/br) cu nipdau level-1-260c-unlim sn74ahc594nsre4 active so ns 16 2000 green (rohs & no sb/br) cu nipdau level-1-260c-unlim sn74ahc594pw active tssop pw 16 90 green (rohs & no sb/br) cu nipdau level-1-260c-unlim sn74ahc594pwe4 active tssop pw 16 90 green (rohs & no sb/br) cu nipdau level-1-260c-unlim sn74ahc594pwr active tssop pw 16 2000 green (rohs & no sb/br) cu nipdau level-1-260c-unlim sn74ahc594pwre4 active tssop pw 16 2000 green (rohs & no sb/br) cu nipdau level-1-260c-unlim (1) the marketing status values are defined as follows: active: product device recommended for new designs. lifebuy: ti has announced that the device will be discontinued, and a lifetime-buy period is in effect. nrnd: not recommended for new designs. device is in production to support existing customers, but ti does not recommend using this part in a new design. preview: device has been announced but is not in production. samples may or may not be available. obsolete: ti has discontinued the production of the device. (2) eco plan - the planned eco-friendly classification: pb-free (rohs) or green (rohs & no sb/br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. tbd: the pb-free/green conversion plan has not been defined. pb-free (rohs): ti's terms "lead-free" or "pb-free" mean semiconductor products that are compatible with the current rohs requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. where designed to be soldered at high temperatures, ti pb-free products are suitable for use in specified lead-free processes. green (rohs & no sb/br): ti defines "green" to mean pb-free (rohs compatible), and free of bromine (br) and antimony (sb) based flame retardants (br or sb do not exceed 0.1% by weight in homogeneous material) (3) msl, peak temp. -- the moisture sensitivity level rating according to the jedec industry standard classifications, and peak solder temperature. important information and disclaimer: the information provided on this page represents ti's knowledge and belief as of the date that it is provided. ti bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. efforts are underway to better integrate information from third parties. ti has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on package option addendum www.ti.com 9-aug-2005 addendum-page 1
incoming materials and chemicals. ti and ti suppliers consider certain information to be proprietary, and thus cas numbers and other limited information may not be available for release. in no event shall ti's liability arising out of such information exceed the total purchase price of the ti part(s) at issue in this document sold by ti to customer on an annual basis. package option addendum www.ti.com 9-aug-2005 addendum-page 2

mechanical data msso002e ? january 1995 ? revised december 2001 post office box 655303 ? dallas, texas 75265 db (r-pdso-g**) plastic small-outline 4040065 /e 12/01 28 pins shown gage plane 8,20 7,40 0,55 0,95 0,25 38 12,90 12,30 28 10,50 24 8,50 seating plane 9,90 7,90 30 10,50 9,90 0,38 5,60 5,00 15 0,22 14 a 28 1 20 16 6,50 6,50 14 0,05 min 5,90 5,90 dim a max a min pins ** 2,00 max 6,90 7,50 0,65 m 0,15 0 ? 8 0,10 0,09 0,25 notes: a. all linear dimensions are in millimeters. b. this drawing is subject to change without notice. c. body dimensions do not include mold flash or protrusion not to exceed 0,15. d. falls within jedec mo-150
mechanical data mtss001c january 1995 revised february 1999 post office box 655303 ? dallas, texas 75265 pw (r-pdso-g**) plastic small-outline package 14 pins shown 0,65 m 0,10 0,10 0,25 0,50 0,75 0,15 nom gage plane 28 9,80 9,60 24 7,90 7,70 20 16 6,60 6,40 4040064/f 01/97 0,30 6,60 6,20 8 0,19 4,30 4,50 7 0,15 14 a 1 1,20 max 14 5,10 4,90 8 3,10 2,90 a max a min dim pins ** 0,05 4,90 5,10 seating plane 0 8 notes: a. all linear dimensions are in millimeters. b. this drawing is subject to change without notice. c. body dimensions do not include mold flash or protrusion not to exceed 0,15. d. falls within jedec mo-153
important notice texas instruments incorporated and its subsidiaries (ti) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. all products are sold subject to ti?s terms and conditions of sale supplied at the time of order acknowledgment. ti warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with ti?s standard warranty. testing and other quality control techniques are used to the extent ti deems necessary to support this warranty. except where mandated by government requirements, testing of all parameters of each product is not necessarily performed. ti assumes no liability for applications assistance or customer product design. customers are responsible for their products and applications using ti components. to minimize the risks associated with customer products and applications, customers should provide adequate design and operating safeguards. ti does not warrant or represent that any license, either express or implied, is granted under any ti patent right, copyright, mask work right, or other ti intellectual property right relating to any combination, machine, or process in which ti products or services are used. information published by ti regarding third-party products or services does not constitute a license from ti to use such products or services or a warranty or endorsement thereof. use of such information may require a license from a third party under the patents or other intellectual property of the third party, or a license from ti under the patents or other intellectual property of ti. reproduction of information in ti data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations, and notices. reproduction of this information with alteration is an unfair and deceptive business practice. ti is not responsible or liable for such altered documentation. resale of ti products or services with statements different from or beyond the parameters stated by ti for that product or service voids all express and any implied warranties for the associated ti product or service and is an unfair and deceptive business practice. ti is not responsible or liable for any such statements. following are urls where you can obtain information on other texas instruments products and application solutions: products applications amplifiers amplifier.ti.com audio www.ti.com/audio data converters dataconverter.ti.com automotive www.ti.com/automotive dsp dsp.ti.com broadband www.ti.com/broadband interface interface.ti.com digital control www.ti.com/digitalcontrol logic logic.ti.com military www.ti.com/military power mgmt power.ti.com optical networking www.ti.com/opticalnetwork microcontrollers microcontroller.ti.com security www.ti.com/security telephony www.ti.com/telephony video & imaging www.ti.com/video wireless www.ti.com/wireless mailing address: texas instruments post office box 655303 dallas, texas 75265 copyright ? 2005, texas instruments incorporated

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