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tc74vcx16841ft 2007-10-19 1 toshiba cmos digital integrat ed circuit silicon monolithic tc74vcx16841ft low-voltage 20-bit d-type latch with 3.6-v tolerant inputs and outputs the tc74vcx16841ft is a high-performance cmos 20-bit d-type latch. 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. the tc74vcx16841ft can be used as two 10-bit latches or one 20-bit latch. the 20 latches are transparent d-type latches. the device has noninverting data (d) in puts and provides true data at its outputs. while the latch-enabl e (1le or 2le) input is high, the q outputs of the corresponding 10-bit latch follow the d inputs. when le is taken low, th e q outputs are latched at the levels set up at the d inputs. when the oe input is high, the outputs are in a high-impedance state. this device is designed to be used with 3-stat e memory address drivers, etc. all inputs are equipped with protection circuits against static discharge. features ? low-voltage operation: v cc = 1.8 to 3.6 v ? high-speed operation: t pd = 3.0 ns (max) (v cc = 3.0 to 3.6 v) : t pd = 3.4 ns (max) (v cc = 2.3 to 2.7 v) : t pd = 6.8 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.)
tc74vcx16841ft 2007-10-19 2 pin assignment (top view) iec logic symbol 1 28 29 55 1d1 52 49 51 47 48 44 45 1d3 1d5 1d4 1d6 2d3 2d2 43 40 41 38 2d4 2d7 2d6 2d8 en2 en4 5 8 10 1q3 1q5 1q7 3 6 9 1q2 1q4 1q6 15 17 20 23 2q1 2q3 2q5 2q7 13 16 19 21 1q9 2q2 2q4 2q6 12 1q8 c3 36 37 34 33 2d5 1d10 1d8 1d7 1d9 54 1d2 42 2d1 2 1q1 14 1q10 oe1 2d9 2d10 31 30 1d 2 24 2q8 26 2q9 27 2q10 56 c1 1le 2le 2oe 3d 4 1le 48 1d1 1d2 gnd 47 46 45 44 43 42 oe1 1 2 3 4 5 6 7 gnd 1q3 1q4 v cc 1q5 1q6 1d3 8 9 10 1d5 1d6 1q7 41 40 39 1d4 v cc 1d7 1q2 gnd 38 1d8 1d9 1d10 37 36 35 34 33 32 gnd 11 12 13 14 15 16 17 1q10 2q1 2q2 2q3 gnd 2q4 2d1 18 19 20 gnd 2d4 2q5 31 30 29 2d2 2d3 2d5 1q8 1q9 21 2q6 v cc 2q7 22 23 24 v cc 2d7 2q8 2d6 2d8 25 gnd 26 2q9 27 2q10 28 oe 2 gnd 2d9 2d10 2le 56 55 54 53 52 51 50 49 1q1
tc74vcx16841ft 2007-10-19 3 truth table (each 10-bit latch) input oe le d output q l h h h l h l l l l x qn h x x z x: don?t care z: high impedance qn: q outputs are latched at the time when the le input is taken to a low logic level. system diagram 28 1 1le 1q1 1d1 1q2 1d2 1q3 1d3 1q4 1d4 1q5 1d5 1q6 1d6 1q7 1d7 1q8 1d8 1q9 1d9 1q10 1d10 1oe d q le d q le d q le d q le d q le d q le d q le d q le d q le d q le 2le 2q1 2d1 2q2 2d2 2q3 2d3 2q4 2d4 2q5 2d5 2q6 2d6 2q7 2d7 2q8 2d8 2q9 2d9 2q10 2d10 2oe d q le d q le d q le d q le d q le d q le d q le d q le d q le d q le 55 54 52 51 49 48 47 45 44 43 235689 10 12 13 14 42 41 40 38 37 36 34 33 31 30 15 16 17 19 20 21 23 24 26 27 56 29
tc74vcx16841ft 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 50 (note 4) ma dc output current i out 50 ma power dissipation p d 400 mw dc v cc /ground current per supply pin i cc /i gnd 100 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 24 (note 5) 18 (note 6) output current i oh /i ol 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
tc74vcx16841ft 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
tc74vcx16841ft 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
tc74vcx16841ft 2007-10-19 7 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 6.8 2.5 0.2 1.0 3.4 propagation delay time (d-q) t plh t phl figure 1, figure 2 3.3 0.3 0.8 3.0 ns 1.8 1.5 8.8 2.5 0.2 1.0 4.4 propagation delay time (le-q) t plh t phl figure 1, figure 2 3.3 0.3 0.8 3.5 ns 1.8 1.5 9.8 2.5 0.2 1.0 4.9 3-state output enable time t pzl t pzh figure 1, figure 3 3.3 0.3 0.8 3.8 ns 1.8 1.5 7.6 2.5 0.2 1.0 4.2 3-state output disable time t plz t phz figure 1, figure 3 3.3 0.3 0.8 3.7 ns 1.8 4.0 ? 2.5 0.2 1.5 ? minimum pulse width (le) t w (h) figure 1, figure 2 3.3 0.3 1.5 ? ns 1.8 2.5 ? 2.5 0.2 1.5 ? minimum setup time t s figure 1, figure 2 3.3 0.3 1.5 ? ns 1.8 1.0 ? 2.5 0.2 1.0 ? minimum hold time t h figure 1, figure 2 3.3 0.3 1.0 ? 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 |)
tc74vcx16841ft 2007-10-19 8 dynamic switching characteristics (ta = 25c, input: t r = t f = 2.0 ns, c l = 30 pf, r l = 500 ) 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 out ? 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 /20 (per bit)
tc74vcx16841ft 2007-10-19 9 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 , t w , t s , t h t h (l) t s (l) 10% 90% v m v ih gnd v ih gnd v oh v ol t s (h) t h (h) t f 2.0 ns t r 2.0 ns 90% v m 10% v m v m t phl t plh v m t w (h) t plh t phl v m input (le) input (d) output (q) t r 2.0 ns t f 2.0 ns
tc74vcx16841ft 2007-10-19 10 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 (q) low to off to low output (q) high to off to high v x t f 2.0 ns
tc74vcx16841ft 2007-10-19 11 package dimensions weight: 0.25 g (typ.)
tc74vcx16841ft 2007-10-19 12 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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