TC74VCX16244FT 2007-10-19 1 toshiba cmos digital integrat ed circuit silicon monolithic TC74VCX16244FT low-voltage 16-bit bus buffer with 3.6-v tolerant inputs and outputs the TC74VCX16244FT is a high-performance cmos 16-bit bus buffer. designed for use in 1.8-v, 2.5-v or 3.3-v systems, it achieves high-speed operation while maintaining the cmos low power dissipation. it is also designed with overvo ltage tolerant inputs and outputs up to 3.6 v. this device is non-inverting 3-state buffer having four active-low output enables. it can be used as four 4-bit buffers or two 8-bit buffers or one 16-bit buffer. when the oe input is high, the outputs are in a high impedance state. this device is designed to be used with 3-state memo ry address drivers, etc. all inputs are equipped with prot ection circuits against static discharge. features ? low-voltage operation: v cc = 1.8 to 3.6 v ? high-speed operation : t pd = 2.5 ns (max) (v cc = 3.0 to 3.6 v) : t pd = 3.0 ns (max) (v cc = 2.3 to 2.7 v) : t pd = 5.0 ns (max) (v cc = 1.8 v) ? output current : i oh /i ol = 24 ma (min) (v cc = 3.0 v) : i oh /i ol = 18 ma (min) (v cc = 2.3 v) : i oh /i ol = 6 ma (min) (v cc = 1.8 v) ? latch-up performance: ? 300 ma ? esd performance: machine model 200 v human body model 2000 v ? package: tssop ? 3.6-v tolerant function and power down prot ection provided on a ll inputs and outputs weight: 0.25 g (typ.)
TC74VCX16244FT 2007-10-19 2 pin assignment (top view) iec logic symbol oe2 48 1a1 1a2 gnd 47 46 45 44 43 42 oe1 1 2 3 4 5 6 7 gnd 1y3 1y4 v cc 2y1 2y2 1a3 8 9 10 2a1 2a2 gnd 41 40 39 1a4 v cc gnd 1y1 1y2 2a3 38 2a4 3a1 3a2 37 36 35 34 33 32 2y3 11 12 13 14 15 16 17 3y2 gnd 3y3 3y4 v cc 4y1 gnd 18 19 20 v cc 4a1 4y2 31 30 29 3a3 3a4 4a2 2y4 3y1 28 21 gnd 4y3 4y4 22 23 24 4a3 4a4 oe4 27 26 25 gnd oe3 48 1 24 25 47 44 46 oe1 1a1 1 1 1a3 1a2 41 43 38 40 36 37 33 35 2a1 1a4 2a3 2a2 3a1 2a4 3a3 3a2 30 32 27 29 26 4a1 3a4 4a3 4a2 4a4 2 5 8 11 1y1 1y3 2y1 2y3 3 6 9 1y2 1y4 2y2 14 17 20 23 3y2 3y4 4y2 4y4 13 16 19 22 3y1 3y3 4y1 4y3 en2 en1 en3 en4 1 4 12 2y4 oe2 oe4 oe3 1 2 1 3
TC74VCX16244FT 2007-10-19 3 truth table system diagram inputs outputs oe1 1a1-1a4 1y1-1y4 l l l l h h h x z inputs outputs oe 2 2a1-2a4 2y1-2y4 l l l l h h h x z inputs outputs oe3 3a1-3a4 3y1-3y4 l l l l h h h x z inputs outputs oe 4 4a1-4a4 4y1-4y4 l l l l h h h x z x: don?t care z: high impedance oe1 2a1-2a4 3a1-3a4 4a1-4a4 1/4 oe2 oe3 oe4 1a1-1a4 1y1-1y4 2y1-2y4 3y1-3y4 4y1-4y4
TC74VCX16244FT 2007-10-19 4 absolute maximum ratings (note 1) characteristics symbol rating unit power supply voltage v cc 0.5 to 4.6 v dc input voltage v in 0.5 to 4.6 v 0.5 to 4.6 (note 2) dc output voltage v out 0.5 to v cc 0.5 (note 3) v input diode current i ik 50 ma output diode current i ok r 50 (note 4) ma dc output current i out r50 ma power dissipation p d 400 mw dc v cc /ground current per supply pin i cc /i gnd r100 ma storage temperature t stg 65 to 150 c note 1: exceeding any of the absolute maximum ratings, even briefly, lead to deterioration in ic performance or even destruction. using continuously under heavy loads (e.g. the app lication of high temperature/current/voltage and the significant change in temperature, etc.) may cause this product to decrease in the reliability significantly even if the operating conditions (i.e. operating temper ature/current/voltage, etc. ) are within the absolute maximum ratings and the operating ranges. please design the appropriate reliability upon reviewing the toshiba semiconductor reliability handbook (?handling precautions?/?derating concept and methods?) and individual reliability data (i.e. reliability test report and estimated failure rate, etc). note 2: off state note 3: high or low state. i out absolute maximum rating must be observed. note 4: v out gnd, v out ! v cc operating ranges (note 1) characteristics symbol rating unit 1.8 to 3.6 power supply voltage v cc 1.2 to 3.6 (note 2) v input voltage v in 0.3 to 3.6 v 0 to 3.6 (note 3) output voltage v out 0 to v cc (note 4) v r 24 (note 5) r 8 (note 6) output current i oh /i ol r 6 (note 7) ma operating temperature t opr 40 to 85 c input rise and fall time dt/dv 0 to 10 (note 8) ns/v note 1: the operating ranges must be maintai ned to ensure the normal op eration of the device. unused inputs must be tied to either vcc or gnd. note 2: data retention only note 3: off state note 4: high or low state note 5: v cc 3.0 to 3.6 v note 6: v cc 2.3 to 2.7 v note 7: v cc 1.8 v note 8: v in 0.8 to 2.0 v, v cc 3.0 v
TC74VCX16244FT 2007-10-19 5 electrical characteristics dc characteristics (ta = ? 40 to 85c, 2.7 v < v cc < = 3.6 v) characteristics symbol test condition v cc (v) min max unit h-level v ih ? 2.7 to 3.6 2.0 ? input voltage l-level v il ? 2.7 to 3.6 ? 0.8 v i oh = ?100 a 2.7 to 3.6 v cc ? 0.2 ? i oh = ?12 ma 2.7 2.2 ? i oh = ?18 ma 3.0 2.4 ? h-level v oh v in = v ih or v il i oh = ?24 ma 3.0 2.2 ? i ol = 100 a 2.7 to 3.6 ? 0.2 i ol = 12 ma 2.7 ? 0.4 i ol = 18 ma 3.0 ? 0.4 output voltage l-level v ol v in = v ih or v il i ol = 24 ma 3.0 ? 0.55 v input leakage current i in v in = 0 to 3.6 v 2.7 to 3.6 ? 5.0 a 3-state output off state current i oz v in = v ih or v il v out = 0 to 3.6 v 2.7 to 3.6 ? 10.0 a power-off leakage current i off v in , v out = 0 to 3.6 v 0 ? 10.0 a v in = v cc or gnd 2.7 to 3.6 ? 20.0 quiescent supply current i cc v cc < = (v in , v out ) < = 3.6 v 2.7 to 3.6 ? 20.0 increase in i cc per input i cc v ih = v cc ? 0.6 v 2.7 to 3.6 ? 750 a dc characteristics (ta = ? 40 to 85c, 2.3 v < = v cc < = 2.7 v) characteristics symbol test condition v cc (v) min max unit h-level v ih ? 2.3 to 2.7 1.6 ? input voltage l-level v il ? 2.3 to 2.7 ? 0.7 v i oh = ?100 a 2.3 to 2.7 v cc ? 0.2 ? i oh = ?6 ma 2.3 2.0 ? i oh = ?12 ma 2.3 1.8 ? h-level v oh v in = v ih or v il i oh = ?18 ma 2.3 1.7 ? i ol = 100 a 2.3 to 2.7 ? 0.2 i ol = 12 ma 2.3 ? 0.4 output voltage l-level v ol v in = v ih or v il i ol = 18 ma 2.3 ? 0.6 v input leakage current i in v in = 0 to 3.6 v 2.3 to 2.7 ? 5.0 a 3-state output off state current i oz v in = v ih or v il v out = 0 to 3.6 v 2.3 to 2.7 ? 10.0 a power-off leakage current i off v in , v out = 0 to 3.6 v 0 ? 10.0 a v in = v cc or gnd 2.3 to 2.7 ? 20.0 quiescent supply current i cc v cc < = (v in , v out ) < = 3.6 v 2.3 to 2.7 ? 20.0 a
TC74VCX16244FT 2007-10-19 6 dc characteristics (ta = ? 40 to 85c, 1.8 v < = v cc < 2.3 v) characteristics symbol test condition v cc (v) min max unit h-level v ih ? 1.8 to 2.3 0.7 v cc ? input voltage l-level v il ? 1.8 to 2.3 ? 0.2 v cc v i oh = ?100 a 1.8 v cc ? 0.2 ? h-level v oh v in = v ih or v il i oh = ?6 ma 1.8 1.4 ? i ol = 100 a 1.8 ? 0.2 output voltage l-level v ol v in = v ih or v il i ol = 6 ma 1.8 ? 0.3 v input leakage current i in v in = 0 to 3.6 v 1.8 ? 5.0 a 3-state output off state current i oz v in = v ih or v il v out = 0 to 3.6 v 1.8 ? 10.0 a power-off leakage current i off v in , v out = 0 to 3.6 v 0 ? 10.0 a v in = v cc or gnd 1.8 ? 20.0 quiescent supply current i cc v cc < = (v in , v out ) < = 3.6 v 1.8 ? 20.0 a ac characteristics (ta = ? 40 to 85c, input: t r = t f = 2.0 ns, c l = 30 pf, r l = 500 ) (note 1) characteristics symbol test condition v cc (v) min max unit 1.8 1.5 5.0 2.5 0.2 1.0 3.0 propagation delay time t plh t phl figure 1, figure 2 3.3 0.3 0.8 2.5 ns 1.8 1.5 6.5 2.5 0.2 1.0 4.1 3-state output enable time t pzl t pzh figure 1, figure 3 3.3 0.3 0.8 3.5 ns 1.8 1.5 5.0 2.5 0.2 1.0 3.8 3-state output disable time t plz t phz figure 1, figure 3 3.3 0.3 0.8 3.5 ns 1.8 ? 0.5 2.5 0.2 ? 0.5 output to output skew t oslh t oshl (note 2) 3.3 0.3 ? 0.5 ns note 1: for c l = 50 pf, add approximately 300 ps to the ac maximum specification. note 2: parameter guaranteed by design. (t oslh = |t plhm ? t plhn |, t oshl = |t phlm ? t phln |)
TC74VCX16244FT 2007-10-19 7 dynamic switching characteristics (ta = 25c, input: t r = t f = 2.0 ns, c l = 30 pf) characteristics symbol test condition v cc (v) typ. unit v ih = 1.8 v, v il = 0 v (note) 1.8 0.25 v ih = 2.5 v, v il = 0 v (note) 2.5 0.6 quiet output maximum dynamic v ol v olp v ih = 3.3 v, v il = 0 v (note) 3.3 0.8 v v ih = 1.8 v, v il = 0 v (note) 1.8 ?0.25 v ih = 2.5 v, v il = 0 v (note) 2.5 ?0.6 quiet output minimum dynamic v ol v olv v ih = 3.3 v, v il = 0 v (note) 3.3 ?0.8 v v ih = 1.8 v, v il = 0 v (note) 1.8 1.5 v ih = 2.5 v, v il = 0 v (note) 2.5 1.9 quiet output minimum dynamic v oh v ohv v ih = 3.3 v, v il = 0 v (note) 3.3 2.2 v note: parameter guaranteed by design. capacitive characteristics (ta = 25c) characteristics symbol test condition v cc (v) typ. unit input capacitance c in ? 1.8, 2.5, 3.3 6 pf output capacitance c o ? 1.8, 2.5, 3.3 7 pf power dissipation capacitance c pd f in = 10 mhz (note) 1.8, 2.5, 3.3 20 pf note: c pd is defined as the value of the internal equivalent capacitance which is ca lculated from the operating current consumption without load. average operating current can be obtained by the equation: i cc (opr) = c pd ?v cc ?f in + i cc /16 (per bit)
TC74VCX16244FT 2007-10-19 8 ac test circuit ac waveform figure 1 parameter switch t plh , t phl open t plz , t pzl 6.0 v @v cc = 3.3 0.3 v v cc 2 @v cc = 2.5 0.2 v @v cc = 1.8 v t phz , t pzh gnd 6.0 v or v cc 2 open gnd switch output measure c l = 30 pf r l = 500 r l r l c l figure 2 t plh , t phl 90% 10% output (y) input (a) v ol v oh v ih v m t plh t phl t r 2.0 ns v m gnd t f 2.0 ns v cc symbol 3.3 0.3 v 2.5 0.2 v 1.8 v v ih 2.7 v v cc v cc v m 1.5 v v cc /2 v cc /2 v x v ol + 0.3 v v ol + 0.15 v v ol + 0.15 v v y v oh ? 0.3 v v oh ? 0.15 v v oh ? 0.15 v figure 3 t plz , t phz , t pzl , t pzh 90% 10% v ol 3.0 v or v cc gnd v ih v m t phz t pzh t r 2.0 ns v m gnd v oh outputs enabled v m t plz t pzl v y outputs disabled outputs enabled output enable control ( oe ) output (y) low to off to low output (y) high to off to high v x t f 2.0 ns
TC74VCX16244FT 2007-10-19 9 package dimensions weight: 0.25 g (typ.)
TC74VCX16244FT 2007-10-19 10 restrictions on product use 20070701-en general ? the information contained herein is subject to change without notice. ? toshiba is continually working to improve the quality and reliability of its products. nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity an d vulnerability to physical stress. it is the responsibility of the buyer, when utilizing toshiba produc ts, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such toshiba products could cause loss of human life, bodily injury or damage to property. in developing your designs, please ensure that toshiba products are used within specified operating ranges as set forth in the most recent toshib a products specifications. also, please keep in mind the precautions and conditions set forth in the ?handling guide for semiconduct or devices,? or ?toshiba semiconductor reliability handbook? etc. ? the toshiba products listed in this document are in tended for usage in general electronics applications (computer, personal equipment, office equipment, measuri ng equipment, industrial robotics, domestic appliances, etc.).these toshiba products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfuncti on or failure of which may cause loss of human life or bodily injury (?unintended usage?). unintended usage incl ude atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, et c.. unintended usage of toshiba products listed in his document shall be made at the customer?s own risk. ? the products described in this document shall not be used or embedded to any downstream products of which manufacture, use and/or sale are prohibited under any applicable laws and regulations. ? the information contained herein is presented only as a guide for the applications of our products. no responsibility is assumed by toshiba for any infringement s of patents or other rights of the third parties which may result from its use. no license is granted by implic ation or otherwise under any patents or other rights of toshiba or the third parties. ? please contact your sales representative for product- by-product details in this document regarding rohs compatibility. please use these products in this document in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances. toshiba assumes no liability for damage or losses occurring as a result of noncompliance with applicable laws and regulations.
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