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TC74LCXR163245FT 2007-10-19 1 toshiba cmos digital integrat ed circuit silicon monolithic TC74LCXR163245FT 16-bit dual supply bus transceiver with series resistor the TC74LCXR163245FT is a dual supply, advanced high-speed cmos 16-bit dual supply voltage interface bus transceiver fabricated with silicon gate cmos technology. designed for use as an interface between a 3.3-v or a 2.5-v bus and a 5-v bus in mixed 3.3-v or 2.5-v/5-v supply systems, it achieves high-speed operation while maintaining the cmos low power dissipation. it is intended for two-way asynchronous communication between data busses. the direction of data transmission is determined by the level of the dir input. the enable input ( oe ) can be used to disable the device so that the buses are effectively isolated. the b-port interfaces with the 3. 3 v or 2.5 v bus, the a-port with the 5 v bus. the 26- ? series resistor helps reducing output oversh oot and undershoot without external resistor. all inputs are equipped with protection circuits against static discharge or transient excess voltage. features (note 1) (note 2) ? bidirectional interface between 3. 3 v or 2.5 v buses and 5 v buses ? 26- ? series resistors on outputs ? high-speed operation: t pd = 8.5 ns (max) (v ccb = 3.3 0.3 v/v cca = 5 0.5 v, ta = ? 40 to 85c) ? low-voltage operation: i cc = 80 a (max) (ta = ? 40 to 85c) ? symmetrical output impedance: i outb = 12 ma (min) i outa = 12 ma (min) (v ccb = 3.0 v/v cca = 4.5 v) ? power-down protection provided on all inputs and outputs ? allows a port and v cca to float simultaneously in high state at oe pin ? latch-up performance: ? 500 ma ? esd performance: machine model > 200 v (note 2) ? package: tssop note 1: do not apply a signal to any bus pins when it is in the output mode. damage may result. all floating (high impedance) bus pins must have their input fixed by means of pull-up or pull-down resistors. note 2: this device is electrostatic sensitivity (human body model > 1 kv). please handle with caution. weight: 0.25 g (typ.)
TC74LCXR163245FT 2007-10-19 2 pin assignment (top view) iec logic symbol (3.3 v) v ccb oe1 48 1a1 1a2 gnd 47 46 45 44 43 42 1dir 1 2 3 4 5 6 7 gnd 1b3 1b4 (3.3 v) v ccb 1b5 1b6 1a3 8 9 10 1a5 1a6 gnd 41 40 39 1a4 v cca (5 v) gnd 1b1 1b2 1a7 38 1a8 2a1 2a2 37 36 35 34 33 32 1b7 11 12 13 14 15 16 17 2b2 gnd 2b3 2b4 2b5 gnd 18 19 20 v cca (5 v) 2a5 2b6 31 30 29 2a3 2a4 2a6 1b8 2b1 28 21 gnd 2b7 2b8 22 23 24 2a7 2a8 2dir 27 26 25 gnd oe2 4 oe1 1dir oe2 2dir 1a1 1a2 1a3 1a4 1a5 1a6 1a7 1a8 2a1 2a2 2a3 2a4 2a5 2a6 2a7 2a8 48 1 25 24 47 46 44 43 41 40 38 35 33 32 30 29 27 26 37 36 1b1 1b2 1b3 1b4 1b5 1b6 1b7 1b8 2b1 2b2 2b3 2b4 2b5 2b6 2b7 2b8 2 3 5 6 8 9 11 14 16 17 19 20 22 23 12 13 1 2 5 g3 3 en1 (ba) 3 en2 (ab) g6 6 en4 (ba) 6 en5 (ab)
TC74LCXR163245FT 2007-10-19 3 truth table inputs function oe 1 1dir bus 1a1-1a8 bus 1b1-1b8 outputs l l output input a = b l h input output b = a h x z z inputs function oe 2 2dir bus 2a1-2a8 bus 2b1-2b8 outputs l l output input a = b l h input output b = a h x z z x: don?t care z: high impedance
TC74LCXR163245FT 2007-10-19 4 block diagram v ccb v cca 1dir oe1 1b1 1b8 1a1 1a8 logic level converter same as above block v ccb v cca 2dir oe2 2b1 2b8 2a1 2a8 logic level converter same as above block
TC74LCXR163245FT 2007-10-19 5 absolute maximum ratings (note 1) characteristics symbol rating unit v ccb ? 0.5 to 7.0 power supply voltage (note 2) v cca ? 0.5 to 7.0 v dc input voltage (dir, oe ) v in ? 0.5 to 7.0 v ? 0.5 to 7.0 (note 3) v i/ob ? 0.5 to v ccb + 0.5 (note 4) ? 0.5 to 7.0 (note 3) dc bus i/o voltage v i/oa ? 0.5 to v cca + 0.5 (note 4) v input diode current i ik ? 50 ma output diode current i i/ok 50 (note 5) ma i outb 50 dc output current i outa 50 ma i ccb 100 dc v cc /ground current per supply pin i cca 100 ma power dissipation p d 400 mw 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: don?t supply a voltage to v cca terminal when v ccb is in the off state. note 3: output in off state note 4: high or low state. i out absolute maximum rating must be observed. note 5: v out < gnd, v out > v cc
TC74LCXR163245FT 2007-10-19 6 operating ranges (note 1) characteristics symbol rating unit v ccb 2.3 to 3.6 power supply voltage v cca 4.5 to 5.5 v input voltage (dir, oe ) v in 0 to 5.5 v 0 to 5.5 (note 2) v i/ob 0 to v ccb (note 3) 0 to 5.5 (note 2) dc bus i/o voltage v i/oa 0 to v cca (note 3) v 12 (note 4) i outb 4 (note 5) output current i outa 12 (note 6) ma operating temperature t opr ? 40 to 85 c input rise and fall time dt/dv 0 to 10 (note 7) ns/v note 1: the operating ranges must be maintained to ensure the normal operation of the device. unused inputs must be tied to either vcc or gnd. please connect both bus inputs and the bus outputs with vcc or gnd when the i/o of the bus terminal changes by the function. in this case, please note that the output is not short-circuited. note 2: output in off state note 3: high or low state note 4: v ccb = 3.0 to 3.6 v note 5: v ccb = 2.3 to 2.7 v note 6: v cca = 4.5 to 5.5 v note 7: v inb = 0.8 to 2.0 v, v ccb = 3.0 v v ina = 0.8 to 2.0 v, v cca = 5.0 v
TC74LCXR163245FT 2007-10-19 7 electrical characteristics dc characteristics ta = ? 40 to 85c characteristics symbol test condition v ccb (v) v cca (v) min max unit 2.5 0.2 5.0 0.5 1.7 ? v ihb dir, oe , bn 3.3 0.3 5.0 0.5 2.0 ? h-level input voltage v iha an 2.3 to 3.6 5.0 0.5 2.0 ? v 2.5 0.2 5.0 0.5 ? 0.7 v ilb dir, oe , bn 3.3 0.3 5.0 0.5 ? 0.8 l-level input voltage v ila an 2.3 to 3.6 5.0 0.5 ? 0.8 v 2.3 to 3.6 5.0 0.5 v ccb ? 0.2 ? 3.0 5.0 0.5 2.2 ? v ohb i ohb = ? 100 a i ohb = ? 12 ma i ohb = ? 4 ma 2.3 5.0 0.5 1.8 ? 2.3 to 3.6 5.0 0.5 v cca ? 0.2 ? h-level output voltage v oha v ina = v iha or v ila v inb = v ihb or v ilb i oha = ? 100 a i oha = ? 12 ma 2.3 to 3.6 4.5 3.7 ? v 2.3 to 3.6 5.0 0.5 ? 0.2 3.0 5.0 0.5 ? 0.8 v olb i olb = 100 a i olb = 12 ma i olb = 4 ma 2.3 5.0 0.5 ? 0.6 2.3 to 3.6 5.0 0.5 ? 0.2 l-level output voltage v ola v ina = v iha or v ila v inb = v ihb or v ilb i ola = 100 a i ola = 12 ma 2.3 to 3.6 4.5 ? 0.7 v i ozb v in = v ihb or v ilb v i/ob = v ccb or gnd 2.3 to 3.6 5.0 0.5 ? 5.0 3-state output off state current i oza v in = v ihb or v ilb v i/oa = v cca or gnd 2.3 to 3.6 5.0 0.5 ? 5.0 a input leakage current i in v in (dir, oe ) = v ccb or gnd 3.6 5.5 ? 5.0 a power-off leakage current i off v ina /v inb = 0 to 5.5 v 0 0 ? 10 a i ccb1 v i/oa = open, v cca = open oe v = v ccb, dir = gnd 3.6 open ? 50 i ccb2 v ina = v cca or gnd v inb = v ccb or gnd 3.6 5.5 ? 50 i cca v ina = v cca or gnd v inb = v ccb or gnd 3.6 5.5 ? 80 i cctb v inb = v ccb ? 0.6 v per input 3.6 5.0 0.5 ? 500 a quiescent supply current i ccta v ina = 3.4 v per input 2.3 to 3.6 5.5 ? 2.0 ma
TC74LCXR163245FT 2007-10-19 8 ac characteristics (input: t r = t f = 2.5 ns, r l = 500 ) v ccb = 3.3 0.3 v ta = ? 40 to 85c characteristics symbol test condition cl (pf) v cca (v) min max unit propagation delay time (bn an) t plh t phl 50 5.0 0.5 1.0 7.5 3-state output enable time ( oe an) t pzl t pzh 50 5.0 0.5 1.0 9.5 3-state output disable time ( oe an) t plz t phz input: bn output: an (dir = ?l?) 50 5.0 0.5 1.0 9.5 ns propagation delay time (an bn) t plh t phl 50 5.0 0.5 1.0 8.5 3-state output enable time ( oe bn) t pzl t pzh 50 5.0 0.5 1.0 9.5 3-state output disable time ( oe bn) t plz t phz input: an output: bn (dir = ?h?) 50 5.0 0.5 1.0 9.5 ns output to output skew t oslh t oshl (note) 50 5.0 0.5 ? 1.0 ns note: parameter guaranteed by design. (t oslh = |t plhm ? t plhn |, t oshl = |t phlm ? t phln |) v ccb = 2.5 0.2 v ta = ? 40 to 85c characteristics symbol test condition cl (pf) v cca (v) min max unit propagation delay time (bn an) t plh t phl 50 5.0 0.5 1.0 9.0 3-state output enable time ( oe an) t pzl t pzh 50 5.0 0.5 1.0 13.0 3-state output disable time ( oe an) t plz t phz input: bn output: an (dir = ?l?) 50 5.0 0.5 1.0 14.0 ns propagation delay time (an bn) t plh t phl 30 5.0 0.5 1.0 9.5 3-state output enable time ( oe bn) t pzl t pzh 30 5.0 0.5 1.0 12.5 3-state output disable time ( oe bn) t plz t phz input: an output: bn (dir = ?h?) 30 5.0 0.5 1.0 10.0 ns output to output skew t oslh t oshl (note) 30 or 50 5.0 0.5 ? 1.0 ns note: parameter guaranteed by design. (t oslh = |t plhm ? t plhn |, t oshl = |t phlm ? t phln |)
TC74LCXR163245FT 2007-10-19 9 capacitive characteristics (ta = 25c) v ccb = 2.5, 3.3 v characteristics symbol test circuit test condition v cca (v) typ. unit input capacitance c in ? dir, oe 5.0 7 pf output capacitance c i/o ? an, bn 5.0 8 pf a ? b (dir = ?h?) 5.0 20 c pda ? b ? a (dir = ?l?) 5.0 66 pf a ? b (dir = ?h?) 5.0 34 power dissipation capacitance (note) c pdb ? b ? a (dir = ?l?) 5.0 4 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)
TC74LCXR163245FT 2007-10-19 10 package dimensions weight: 0.25 g (typ.)
TC74LCXR163245FT 2007-10-19 11 restrictions on product use 20070701-en ? 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. ? 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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