? semiconductor components industries, llc, 2005 august, 2005 ? rev. 7 1 publication order number: mc74lcx16245/d mc74lcx16245 low?voltage cmos 16?bit transceiver with 5 v?tolerant inputs and outputs (3?state, non?inverting) the mc74lcx16245 is a high performance, non?inverting 16?bit transceiver operating from a 2.3 to 3.6 v supply. the device is byte controlled. each byte has separate output enable inputs which can be tied together for full 16?bit operation. high impedance ttl compatible inputs significantly reduce current loading to input drivers while ttl compatible outputs offer improved switching noise performance. a v i specification of 5.5 v allows mc74lcx16245 inputs to be safely driven from 5.0 v devices. the mc74lcx16245 is suitable for memory address driving and all ttl level bus oriented transceiver applications. the 4.5 ns maximum propagation delays support high performance applications. current drive capability is 24 ma at both a and b ports. the transmit/receive (t/r n) inputs determine the direction of data flow through the bidirectional transceiver. transmit (active?high) enables data from a ports to b ports; receive (active?low) enables data from b to a ports. the output enable inputs (oen ), when high, disable both a and b ports by placing them in a high z condition. features ? designed for 2.3 to 3.6 v v cc operation ? 4.5 ns maximum t pd ? 5.0 v tolerant ? interface capability with 5.0 v ttl logic ? supports live insertion and withdrawal ? i off specification guarantees high impedance when v cc = 0 v ? lvttl compatible ? lvcmos compatible ? 24 ma balanced output sink and source capability ? near zero static supply current in all three logic states (20 a) substantially reduces system power requirements ? latchup performance exceeds 500 ma ? esd performance: human body model >2000 v; machine model >200 v ? these are pb?free devices* *for additional information on our pb?free strategy and soldering details, please download the on semiconductor soldering and mounting techniques reference manual, solderrm/d. marking diagram tssop?48 dt suffix case 1201 1 48 a = assembly location wl = wafer lot yy = year ww = work week g = pb?free package 1 48 lcx16245g awlyyww see detailed ordering and shipping information in the package dimensions section on page 3 of this data sheet. ordering information http://onsemi.com
mc74lcx16245 http://onsemi.com 2 figure 1. pinout: 48?lead (top view) 48 1 oe1 t/r 1 47 2 a0 b0 46 3 a1 b1 45 4 gnd gnd 44 5 a2 b2 43 6 a3 b3 42 7 v cc v cc 41 8 a4 b4 40 9 a5 b5 39 10 gnd gnd 38 11 a6 b6 37 12 a7 b7 36 13 a8 b8 35 14 a9 b9 34 15 gnd gnd 33 16 a10 b10 32 17 a11 b11 31 18 v cc v cc 30 19 a12 b12 29 20 a13 b13 28 21 gnd gnd 27 22 a14 b14 26 23 a15 b15 25 24 oe2 t/r 2 table 1. pin names pins function oen t/rn a0 ? a15 b0 ? b15 output enable inputs transmit/receive inputs side a inputs or 3?state outputs side b inputs or 3?state outputs t/r 1 a0:7 b0:7 one of eight oe1 t/r 2 a8:15 b8:15 oe2 1 48 24 25 figure 2. logic diagram truth table inputs outputs inputs outputs oe1 t/r 1 oe2 t/r 2 l l bus b0:7 data to bus a0:7 l l bus b8:15 data to bus a8:15 l h bus a0:7 data to bus b0:7 l h bus a8:15 data to bus b8:15 h x high z state on a0:7, b0:7 h x high z state on a8:15, b8:15 h = high voltage level l = low voltage level z = high impedance state x = high or low voltage level and transitions are acceptable; for i cc reasons, do not float inputs
mc74lcx16245 http://onsemi.com 3 ordering information device package shipping ? mc74lcx16245dt tssop?48* 39 units / rail mc74lcx16245dtg tssop?48* 39 units / rail mc74lcx16245dtr2 tssop?48* 2500 / tape & reel m74lcx16245dtr2g tssop?48* 2500 / tape & reel ?for information on tape and reel specifications, including part orientation and tape sizes, please refer to our tape and reel packaging specifications brochure, brd8011/d. *this package is inherently pb?free. maximum ratings symbol parameter value condition unit v cc dc supply voltage ?0.5 to +7.0 v v i dc input voltage ?0.5 v i +7.0 v v o dc output voltage ?0.5 v o +7.0 output in 3?state v ?0.5 v o v cc + 0.5 output in high or low state. (note 1) v i ik dc input diode current ?50 v i < gnd ma i ok dc output diode current ?50 v o < gnd ma +50 v o > v cc ma i o dc output source/sink current 50 ma i cc dc supply current per supply pin 100 ma i gnd dc ground current per ground pin 100 ma t stg storage temperature range ?65 to +150 c maximum ratings are those values beyond which device damage can occur. maximum ratings applied to the device are individual str ess limit values (not normal operating conditions) and are not valid simultaneously. if these limits are exceeded, device functional operation i s not implied, damage may occur and reliability may be affected. 1. i o absolute maximum rating must be observed. recommended operating conditions symbol parameter min typ max unit v cc supply voltage operating data retention only 2.0 1.5 2.5, 3.3 2.5, 3.3 3.6 3.6 v v i input voltage 0 5.5 v v o output voltage (high or low state) (3?state) 0 0 v cc 5.5 v i oh high level output current v cc = 3.0 v ? 3.6 v v cc = 2.7 v ? 3.0 v v cc = 2.3 v ? 2.7 v ? 24 ? 12 ? 8 ma i ol low level output current v cc = 3.0 v ? 3.6 v v cc = 2.7 v ? 3.0 v v cc = 2.3 v ? 2.7 v + 24 + 12 + 8 ma t a operating free?air temperature ?40 +85 c t/ v input transition rise or fall rate, v in from 0.8 v to 2.0 v, v cc = 3.0 v 0 10 ns/v
mc74lcx16245 http://onsemi.com 4 dc electrical characteristics symbo l characteristic condition t a = ?40 c to +85 c unit min max v ih high level input voltage (note 2) 2.3 v v cc 2.7 v 1.7 v 2.7 v v cc 3.6 v 2.0 v il low level input voltage (note 2) 2.3 v v cc 2.7 v 0.7 v 2.7 v v cc 3.6 v 0.8 v oh high level output voltage 2.3 v v cc 3.6 v; i ol = 100 a v cc ? 0.2 v v cc = 2.3 v; i oh = ?8 ma 1.8 v cc = 2.7 v; i oh = ?12 ma 2.2 v cc = 3.0 v; i oh = ?18 ma 2.4 v cc = 3.0 v; i oh = ?24 ma 2.2 v ol low level output voltage 2.3 v v cc 3.6 v; i ol = 100 a 0.2 v v cc = 2.3 v; i ol = 8 ma 0.6 v cc = 2.7 v; i ol = 12 ma 0.4 v cc = 3.0 v; i ol = 16 ma 0.4 v cc = 3.0 v; i ol = 24 ma 0.55 i i input leakage current 2.3 v v cc 3.6 v; 0 v v i 5.5 v 5.0 a i oz 3?state output current 2.3 v cc 3.6 v; 0v v o 5.5 v; v i = v ih or v il 5.0 a i off power?off leakage current v cc = 0 v; v i or v o = 5.5 v 10 a i cc quiescent supply current 2.3 v cc 3.6 v; v i = gnd or v cc 20 a 2.3 v cc 3.6 v; 3.6 v i or v o 5.5 v 20 a i cc increase in i cc per input 2.3 v cc 3.6 v; v ih = v cc ? 0.6 v 500 a 2. these values of v i are used to test dc electrical characteristics only. ac characteristics t r = t f = 2.5 ns; r l = 500 symbo l parameter waveform t a = ?40 c to +85 c unit v cc = 3.3 v 0.3 v c l = 50 pf v cc = 2.7 v c l = 50 pf v cc = 2.5 v 0.2 v c l = 30 pf min max min max min max t plh t phl propagation delay input to output 1 1.5 1.5 4.5 4.5 1.5 1.5 5.2 5.2 1.5 1.5 5.4 5.4 ns t pzh t pzl output enable time to high and low level 2 1.5 1.5 6.5 6.5 1.5 1.5 7.2 7.2 1.5 1.5 8.5 8.5 ns t phz t plz output disable time from high and low level 2 1.5 1.5 6.4 6.4 1.5 1.5 6.9 6.9 1.5 1.5 7.7 7.7 ns t oshl t oslh output?to?output skew (note 3) 1.0 1.0 ns 3. skew is defined as the absolute value of the dif ference between the actual propagation delay for any two separate outputs of the same d evice. the specification applies to any outputs switching in the same direction, either high?to?low (t oshl ) or low?to?high (t oslh ); parameter guaranteed by design.
mc74lcx16245 http://onsemi.com 5 dynamic switching characteristics symbo l characteristic condition t a = +25 c unit min typ max v olp dynamic low peak voltage (note 4) v cc = 3.3 v, c l = 50 pf, v ih = 3.3 v, v il = 0 v v cc = 2.5 v, c l = 30 pf, v ih = 2.5 v, v il = 0 v 0.8 0.6 v v v olv dynamic low valley voltage (note 4) v cc = 3.3 v, c l = 50 pf, v ih = 3.3 v, v il = 0 v v cc = 2.5 v, c l = 30 pf, v ih = 2.5 v, v il = 0 v ?0.8 ?0.6 v v 4. number of outputs defined as ?n?. measured with ?n?1? outputs switching from high?to?low or low?to?high. the remaining output is measured in the low state. capacitive characteristics symbol parameter condition typical unit c in input capacitance v cc = 3.3 v, v i = 0 v or v cc 7 pf c i/o input/output capacitance v cc = 3.3 v, v i = 0 v or v cc 8 pf c pd power dissipation capacitance 10 mhz, v cc = 3.3 v, v i = 0 v or v cc 20 pf
mc74lcx16245 http://onsemi.com 6 an, bn waveform 1 ? propagation delays t r = t f = 2.5 ns, 10% to 90%; f = 1 mhz; t w = 500 ns v cc 0 v v oh v ol an, bn bn, an t plh t phl waveform 2 ? output enable and disable times t r = t f = 2.5 ns, 10% to 90%; f = 1 mhz; t w = 500 ns 0 v oen ,t/r n an, bn t pzh t phz t pzl t plz vmo vmo vmi vmi vmo vmo figure 3. ac waveforms vmi v o h v hz v o l v cc v lz table 2. ac waveforms symbol v cc 3.3 v 0.3 v 2.7 v 2.5 v 0.2 v vmi 1.5 v 1.5 v v cc / 2 vmo 1.5 v 1.5 v v cc / 2 v hz v ol + 0.3 v v ol + 0.3 v v ol + 0.15 v v lz v oh ? 0.3 v v oh ? 0.3 v v oh ? 0.15 v open pulse generator r t dut v cc r l r 1 c l 6 v or v cc x 2 gnd figure 4. test circuit table 3. test circuit test switch t plh , t phl open t pzl , t plz 6 v at v cc = 3.3 0.3 v 6 v at v cc = 2.5 0.2 v open collector/drain t plh and t phl 6 v t pzh , t phz gnd c l = 50 pf at v cc = 3.3 0.3 v or equivalent (includes jig and probe capacitance) c l = 30 pf at v cc = 2.5 0.2 v or equivalent (includes jig and probe capacitance) r l = r 1 = 500 or equivalent r t = z out of pulse generator (typically 50 )
mc74lcx16245 http://onsemi.com 7 package dimensions tssop?48 dt suffix case 1201?01 issue a ??? ??? s u m 0.12 (0.005) v s t s u m 0.254 (0.010) t ?v? b a l k ?u? 48x ref pin 1 ident. 124 25 48 0.076 (0.003) seating d ?t? plane dim min max min max inches millimeters a 12.40 12.60 0.488 0.496 b 6.00 6.20 0.236 0.244 c ??? 1.10 ??? 0.043 d 0.05 0.15 0.002 0.006 f 0.50 0.75 0.020 0.030 g 0.50 bsc 0.0197 bsc h 0.37 ??? 0.015 ??? j 0.09 0.20 0.004 0.008 j1 0.09 0.16 0.004 0.006 k 0.17 0.27 0.007 0.011 k1 0.17 0.23 0.007 0.009 l 7.95 8.25 0.313 0.325 m 0 8 0 8 notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: millimeter. 3. dimensions a and b do not include mold flash, protrusions or gate burrs. mold flash or gate burrs shall not exceed 0.15 (0.006) per side. 4. dimension k does not include dambar protrusion. allowable dambar protrusion shall be 0.08 (0.003) total in excess of the k dimension at maximum material condition. 5. terminal numbers are shown for reference only. 6. dimensions a and b are to be determined at datum plane ?w?. c g h ?w? detail e j k1 k j1 section n?n m 0.25 (0.010) f detail e n n
mc74lcx16245 http://onsemi.com 8 on semiconductor and are registered trademarks of semiconductor components industries, llc (scillc). scillc reserves the right to mak e changes without further notice to any products herein. scillc makes no warranty, r epresentation or guarantee regarding the suitability of its products for an y particular purpose, nor does scillc assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including wi thout limitation special, consequential or incidental damages. ?typical? parameters which may be provided in scillc data sheets and/or specifications can and do vary in different application s and actual performance may vary over time. all operating parameters, including ?typicals? must be validated for each customer application by customer?s technical experts. scillc does not convey any license under its patent rights nor the rights of others. scillc products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the scillc product could create a sit uation where personal injury or death may occur. should buyer purchase or use scillc products for any such unintended or unauthorized application, buyer shall indemnify and hold scillc and its of ficers, employees, subsidiaries, af filiates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, direct ly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that scillc was negligent regarding the design or manufacture of the part. scillc is an equal opportunity/affirmative action employer. this literature is subject to all applicable copyright laws and is not for resale in any manner. publication ordering information n. american technical support : 800?282?9855 toll free usa/canada japan : on semiconductor, japan customer focus center 2?9?1 kamimeguro, meguro?ku, tokyo, japan 153?0051 phone : 81?3?5773?3850 mc74lcx16245/d literature fulfillment : literature distribution center for on semiconductor p.o. box 61312, phoenix, arizona 85082?1312 usa phone : 480?829?7710 or 800?344?3860 toll free usa/canada fax : 480?829?7709 or 800?344?3867 toll free usa/canada email : orderlit@onsemi.com on semiconductor website : http://onsemi.com order literature : http://www.onsemi.com/litorder for additional information, please contact your local sales representative.
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