cy54fct245t, cy74fct245t 8-bit transceivers with 3-state outputs sccs018b ? may 1994 ? revised november 2001 1 post office box 655303 ? dallas, texas 75265 function, pinout, and drive compatible with fct and f logic reduced v oh (typically = 3.3 v) versions of equivalent fct functions edge-rate control circuitry for significantly improved noise characteristics i off supports partial-power-down mode operation esd protection exceeds jesd 22 ? 2000-v human-body model (a114-a) ? 200-v machine model (a115-a) ? 1000-v charged-device model (c101) matched rise and fall times fully compatible with ttl input and output logic levels cy54fct245t ? 48-ma output sink current 12-ma output source current cy74fct245t ? 64-ma output sink current 32-ma output source current 3-state outputs description the ?fct245t devices contain eight noninverting bidirectional buffers with 3-state outputs and are intended for bus-oriented applications. the transmit/receive (t/r ) input determines the direction of data flow through these bidirectional transceivers. transmit (active high) enables data from a ports to b ports. the output enable (oe ), when high, disables both the a and b ports by putting them in the high-impedance state. these devices are fully specified for partial-power-down applications using i off . the i off circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. copyright ? 2001, texas instruments incorporated production data information is current as of publication date. products conform to specifications per the terms of texas instruments standard warranty. production processing does not necessarily include testing of all parameters. please be aware that an important notice concerning availability, standard warranty, and use in critical applications of texas instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. cy54fct245t ...l p ackage (top view) 3 2 1 20 19 9 10 11 12 13 4 5 6 7 8 18 17 16 15 14 a 2 a 3 a 4 a 5 a 6 a t/r 7 gnd v cc b 0 b 1 b 2 b 3 b 4 a 1 a 0 oe 7 b 6 b 5 b 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 t/r a 0 a 1 a 2 a 3 a 4 a 5 a 6 a 7 gnd v cc oe b 0 b 1 b 2 b 3 b 4 b 5 b 6 b 7 cy54fct245t ...d p ackage cy74fct245t ...p, q, or so p ackage (top view) on products compliant to mil-prf-38535, all parameters are tested unless otherwise noted. on all other products, production processing does not necessarily include testing of all parameters.
cy54fct245t, cy74fct245t 8-bit transceivers with 3-state outputs sccs018b ? may 1994 ? revised november 2001 2 post office box 655303 ? dallas, texas 75265 ordering information t a package ? speed (ns) orderable part number top-side marking qsop ? q tape and reel 3.8 cy74fct245dtqct fct245d qsop ? q tape and reel 4.1 cy74fct245ctqct fct245c soic so tube 4.1 cy74fct245ctsoc fct245c soic ? so tape and reel 4.1 cy74fct245ctsoct fct245c dip ? p tube 4.6 cy74fct245atpc cy74fct245atpc ? 40 c to 85 c qsop ? q tape and reel 4.6 cy74fct245atqct fct245a soic so tube 4.6 cy74fct245atsoc fct245a soic ? so tape and reel 4.6 cy74fct245atsoct fct245a qsop ? q tape and reel 7 cy74fct245tqct fct245 soic so tube 7 cy74fct245tsoc fct245 soic ? so tape and reel 7 cy74fct245tsoct fct245 cdip ? d tube 4.5 CY54FCT245CTDMB lcc ? l tube 4.5 cy54fct245ctlmb 55 cto125 c cdip ? d tube 4.9 cy54fct245atdmb ? 55 c to 125 c lcc ? l tube 4.9 cy54fct245atlmb cdip ? d tube 7.5 cy54fct245tdmb lcc ? l tube 7.5 cy54fct245tlmb ? package drawings, standard packing quantities, thermal data, symbolization, and pcb design guidelines are available at www.ti.com/sc/package. function table inputs operation oe t/r operation l l b data to bus a l h a data to bus b h x z h = high logic level, l = low logic level, x = don ? t care, z = high-impedance state logic diagram (positive logic) t/r oe a 0 b 0 to seven other channels 1 2 19 18
cy54fct245t, cy74fct245t 8-bit transceivers with 3-state outputs sccs018b ? may 1994 ? revised november 2001 3 post office box 655303 ? dallas, texas 75265 absolute maximum ratings over operating free-air temperature range (unless otherwise noted) ? supply voltage range to ground potential ? 0.5 v to 7 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . dc input voltage range ? 0.5 v to 7 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . dc output voltage range ? 0.5 v to 7 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . dc output current (maximum sink current/pin) 120 ma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . package thermal impedance, ja (see note 1): p package 69 c/w . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . q package 68 c/w . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . so package 58 c/w . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ambient temperature range with power applied, t a ? 65 c to 135 c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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, and functional operation of the device at these or any other conditions beyond those indicated under ? recommended operating conditions ? is not implied. exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. note 1: the package thermal impedance is calculated in accordance with jesd 51-7. recommended operating conditions (see note 2) cy54fct245t cy74fct245t cy74fct245at cy74fct245ct cy74fct245dt unit min nom max min nom max v cc supply voltage 4.5 5 5.5 4.75 5 5.25 v v ih high-level input voltage 2 2 v v il low-level input voltage 0.8 0.8 v i oh high-level output current ? 12 ? 32 ma i ol low-level output current 48 64 ma t a operating free-air temperature ? 55 125 ? 40 85 c note 2: all unused inputs of the device must be held at v cc or gnd to ensure proper device operation.
cy54fct245t, cy74fct245t 8-bit transceivers with 3-state outputs sccs018b ? may 1994 ? revised november 2001 4 post office box 655303 ? dallas, texas 75265 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) parameter test conditions cy54fct245t cy74fct245t unit parameter test conditions min typ ? max min typ ? max unit v ik v cc = 4.5 v, i in = ? 18 ma ? 0.7 ? 1.2 v v ik v cc = 4.75 v, i in = ? 18 ma ? 0.7 ? 1.2 v v cc = 4.5 v, i oh = ? 12 ma 2.4 3.3 v oh v cc 475v i oh = ? 32 ma 2 v v cc = 4 . 75 v i oh = ? 15 ma 2.4 3.3 v ol v cc = 4.5 v, i ol = 48 ma 0.3 0.55 v v ol v cc = 4.75 v, i ol = 64 ma 0.3 0.55 v v hys all inputs 0.2 0.2 v i i v cc = 5.5 v, v in = v cc 5 a i i v cc = 5.25 v, v in = v cc 5 a i ih v cc = 5.5 v, v in = 2.7 v 1 a i ih v cc = 5.25 v, v in = 2.7 v 1 a i il v cc = 5.5 v, v in = 0.5 v 1 a i il v cc = 5.25 v, v in = 0.5 v 1 a i ozh v cc = 5.5 v, v out = 2.7 v 10 a i ozh v cc = 5.25 v, v out = 2.7 v 10 a i ozl v cc = 5.5 v, v out = 0.5 v ? 10 a i ozl v cc = 5.25 v, v out = 0.5 v ? 10 a i os ? v cc = 5.5 v, v out = 0 v ? 60 ? 120 ? 225 ma i os ? v cc = 5.25 v, v out = 0 v ? 60 ? 120 ? 225 ma i off v cc = 0 v, v out = 4.5 v 1 1 a i cc v cc = 5.5 v, v in 0.2 v, v in v cc ? 0.2 v 0.1 0.2 ma i cc v cc = 5.25 v, v in 0.2 v, v in v cc ? 0.2 v 0.1 0.2 ma ? i cc v cc = 5.5 v, v in = 3.4 v , f 1 = 0, outputs open 0.5 2 ma ? i cc v cc = 5.25 v, v in = 3.4 v , f 1 = 0, outputs open 0.5 2 ma i ccd ? v cc = 5.5 v, one input switching at 50% duty cycle, outputs open, t/r or oe = gnd and v in 0.2 v or v in v cc ? 0.2 v 0.06 0.12 ma/ i ccd ? v cc = 5.25 v, one input switching at 50% duty cycle, outputs open, t/r or oe = gnd and v in 0.2 v or v in v cc ? 0.2 v 0.06 0.12 mhz ? typical values are at v cc = 5 v, t a = 25 c. ? not more than one output should be shorted at a time. duration of short should not exceed one second. the use of high-speed tes t apparatus and/or sample-and-hold techniques are preferable to minimize internal chip heating and more accurately reflect operational values. oth erwise, prolonged shorting of a high output can raise the chip temperature well above normal and cause invalid readings in other parametric tests . in any sequence of parameter tests, i os tests should be performed last. per ttl-driven input (v in = 3.4 v); all other inputs at v cc or gnd ? this parameter is derived for use in total power-supply calculations.
cy54fct245t, cy74fct245t 8-bit transceivers with 3-state outputs sccs018b ? may 1994 ? revised november 2001 5 post office box 655303 ? dallas, texas 75265 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) (continued) parameter test conditions cy54fct245t cy74fct245t unit parameter test conditions min typ ? max min typ ? max unit # one bit switching at f 1 = 10 mhz v in 0.2 v or v in v cc ? 0.2 v 0.7 1.4 # v cc = 5.5 v, out p uts o p en 1 at 50% duty cycle v in = 3.4 v or gnd 1.2 3.4 # o u t pu t s open, t/r or oe = gnd eight bits switching at f 1 = 2.5 mhz v in 0.2v or v in v cc ? 0.2 v 1.3 2.6 || i c # 1 at 50% duty cycle v in = 3.4 v or gnd 3.3 10.6 || ma i c # one bit switching at f 1 = 10 mhz v in 0.2 v or v in v cc ? 0.2 v 0.7 1.4 ma v cc = 5.25 v, out p uts o p en 1 at 50% duty cycle v in = 3.4 v or gnd 1.2 3.4 o u t pu t s open, t/r or oe = gnd eight bits switching at f 1 = 2.5 mhz v in 0.2v or v in v cc ? 0.2 v 1.3 2.6 || 1 at 50% duty cycle v in = 3.4 v or gnd 3.3 10.6 || c i 5 10 5 10 pf c o 9 12 9 12 pf ? typical values are at v cc = 5 v, t a = 25 c. # i c = i cc + ? i cc d h n t + i ccd (f 0 /2 + f 1 n 1 ) where: i c = total supply current i cc = power-supply current with cmos input levels ? i cc = power-supply current for a ttl high input (v in = 3.4 v) d h = duty cycle for ttl inputs high n t = number of ttl inputs at d h i ccd = dynamic current caused by an input transition pair (hlh or lhl) f 0 = clock frequency for registered devices, otherwise zero f 1 = input signal frequency n 1 = number of inputs changing at f 1 all currents are in milliamperes and all frequencies are in megahertz. || values for these conditions are examples of the i cc formula.
cy54fct245t, cy74fct245t 8-bit transceivers with 3-state outputs sccs018b ? may 1994 ? revised november 2001 6 post office box 655303 ? dallas, texas 75265 switching characteristics over operating free-air temperature range (see figure 1) parameter from to cy54fct245t cy54fct245at cy54fct245ct unit parameter (input) (output) min max min max min max unit t plh aorb bora 1.5 7.5 1.5 4.9 1.5 4.5 ns t phl a or b b or a 1.5 7.5 1.5 4.9 1.5 4.5 ns t pzh oe or t/r aorb 1.5 10 1.5 6.5 1.5 6.2 ns t pzl oe or t/r a or b 1.5 10 1.5 6.5 1.5 6.2 ns t phz oe or t/r aorb 1.5 10 1.5 6 1.5 5.2 ns t plz oe or t/r a or b 1.5 10 1.5 6 1.5 5.2 ns switching characteristics over operating free-air temperature range (see figure 1) parameter from to cy74fct245t cy74fct245at cy74fct245ct cy74fct245dt unit parameter (input) (output) min max min max min max min max unit t plh aorb bora 1.5 7 1.5 4.6 1.5 4.1 1.5 3.8 ns t phl a or b b or a 1.5 7 1.5 4.6 1.5 4.1 1.5 3.8 ns t pzh oe or t/r aorb 1.5 9.5 1.5 6.2 1.5 5.8 1.5 5 ns t pzl oe or t/r a or b 1.5 9.5 1.5 6.2 1.5 5.8 1.5 5 ns t phz oe or t/r aorb 1.5 7.5 1.5 5 1.5 4.8 1.5 4.3 ns t plz oe or t/r a or b 1.5 7.5 1.5 5 1.5 4.8 1.5 4.3 ns
cy54fct245t, cy74fct245t 8-bit transceivers with 3-state outputs sccs018b ? may 1994 ? revised november 2001 7 post office box 655303 ? dallas, texas 75265 parameter measurement information 3 v 3 v 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 3 v 0 v input out-of-phase output in-phase output timing input voltage waveforms propagation delay times inverting and noninverting outputs output control output waveform 1 (see note b) output waveform 2 (see note b) v ol v oh t pzl t pzh t plz t phz 3.5 v 0 v v ol + 0.3 v 0 v 3 v voltage waveforms enable and disable times low- and high-level enabling t plh /t phl t plz /t pzl t phz /t pzh open 7 v open test s1 3 v 0 v 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. the outputs are measured one at a time with one input transition per measurement. from output under test c l = 50 pf (see note a) load circuit for 3-state outputs s1 7 v 500 ? gnd from output under test c l = 50 pf (see note a) test point load circuit for totem-pole outputs open v oh ? 0.3 v 500 ? 500 ? 1.5 v 1.5 v 1.5 v 1.5 v 1.5 v 1.5 v 1.5 v 1.5 v 1.5 v 1.5 v 1.5 v 1.5 v 1.5 v 1.5 v 1.5 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) 5962-9221401m2a active lccc fk 20 1 none call ti level-nc-nc-nc 5962-9221401mra active cdip j 20 1 none call ti level-nc-nc-nc 5962-9221403m2a active lccc fk 20 1 none call ti level-nc-nc-nc 5962-9221403mra active cdip j 20 1 none call ti level-nc-nc-nc 5962-9221405m2a active lccc fk 20 1 none call ti level-nc-nc-nc 5962-9221405mra active cdip j 20 1 none call ti level-nc-nc-nc cy54fct245atdmb active cdip j 20 1 none call ti level-nc-nc-nc cy54fct245ctlmb active lccc fk 20 1 none call ti level-nc-nc-nc cy54fct245tlmb active lccc fk 20 1 none call ti level-nc-nc-nc cy74fct245atpc active pdip n 20 20 pb-free (rohs) cu nipdau level-nc-nc-nc cy74fct245atqct active ssop/ qsop dbq 20 2500 pb-free (rohs) cu nipdau level-2-260c-1 year/ level-1-235c-unlim cy74fct245atsoc active soic dw 20 25 pb-free (rohs) cu nipdau level-2-250c-1 year/ level-1-235c-unlim cy74fct245atsoct active soic dw 20 2000 pb-free (rohs) cu nipdau level-2-250c-1 year/ level-1-235c-unlim cy74fct245ctqct active ssop/ qsop dbq 20 2500 pb-free (rohs) cu nipdau level-2-260c-1 year/ level-1-235c-unlim cy74fct245ctsoc active soic dw 20 25 pb-free (rohs) cu nipdau level-2-250c-1 year/ level-1-235c-unlim cy74fct245ctsoct active soic dw 20 2000 pb-free (rohs) cu nipdau level-2-250c-1 year/ level-1-235c-unlim cy74fct245dtqct active ssop/ qsop dbq 20 2500 pb-free (rohs) cu nipdau level-2-260c-1 year/ level-1-235c-unlim cy74fct245tqct active ssop/ qsop dbq 20 2500 pb-free (rohs) cu nipdau level-2-260c-1 year/ level-1-235c-unlim cy74fct245tsoc active soic dw 20 25 pb-free (rohs) cu nipdau level-2-250c-1 year/ level-1-235c-unlim cy74fct245tsoct active soic dw 20 2000 pb-free (rohs) cu nipdau level-2-250c-1 year/ level-1-235c-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 - may not be currently available - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. none: not yet available lead (pb-free). 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" and in addition, uses package materials that do not contain halogens, including bromine (br) or antimony (sb) above 0.1% of total product weight. (3) msl, peak temp. -- the moisture sensitivity level rating according to the jedecindustry standard classifications, and peak solder temperature. package option addendum www.ti.com 28-feb-2005 addendum-page 1
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 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 28-feb-2005 addendum-page 2
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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