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tc7mb3244c,3245cft/fk/ftg 2014-03-01 1 toshiba cmos digital integrated circuit silicon monolithic tc7mb3244cft, TC7MB3244CFK, tc7mb3244cftg tc7mb3245cft, tc7mb3245cfk, tc7mb3245cftg low capacitance octal bus switch the tc7mb3244c, tc7mb3245c is a low on-resistance / low capacitance cmos 8bit bus switch. the low on-resistance of the switch allows connections to be made with minimal propagation delay time. the tc7mb3244c is organized as two 4-bit low-impedance switches with separate output-enable ( oe ) inputs. when oe is low, the switch is on and data can flow from port a to port b, or vice versa. when oe is high, the switch is open and a high-impedance state exists between the two ports. the tc7mb3245c requires the output enable ( oe ) input to be set high to place the output into the high impedance. all inputs are equipped with prot ection circuits against static discharge. features ? operating voltage: v cc = 4.0 to 5.5 v ? on-capacitance: c i/o = 7 pf switch on (typ.) @ v cc = 5 v ? on-resistance: r on = 3 ? (typ.) @ v cc = 4.5 v, v is = 0 v ? esd performance: machine model 200 v human body model 2000 v ? compatible with ttl outp uts (control inputs) ? power-down protection for inputs ( oe and i/o) ? package: tssop20,vssop20 (us20), vqon20 note : when mounting vqon package, the type of recommended flux is ra or rma. tc7mb3244cft, tc7mb3245cft TC7MB3244CFK, tc7mb3245cfk tc7mb3244cftg, tc7mb3245cftg vqon20-p-0404-0.50 weight tssop20-p-0044-0.65a : 0.08 g ( typ.) vssop20-p-0030-0.50 : 0.03 g ( typ.) vqon20-p-0404-0.50 : 0.0145g ( typ.) start of commercial production 2011-05
tc7mb3244c,3245cft/fk/ftg 2014-03-01 2 pin assignment (top view) v cc 20 oe b1 b2 19 18 17 nc 1 2 3 4 a3 a1 a2 (top view) b3 16 b4 b5 b6 15 14 13 a4 5 6 7 8 a7 a5 a6 b7 b8 12 11 9 10 gnd a8 nc-no internal connection ft (tssop20-p-0044-0.65a) fk (vssop20-p-0030-0.50) ftg (vqon20-p-0404-0.50) tc7mb3245c 1 2 3 4 5 1a2 2b3 1a3 2b2 1a4 67 89 10 15 13 12 11 2b1 gnd 2a1 1b4 2a2 1b1 2a4 1b2 2a3 1b3 20 19 18 17 16 2b4 1a1 v cc ftg (vqon20-p-0404-0.50) v cc 20 oe2 1b1 2a4 19 18 17 oe1 1 2 3 4 1a2 1a1 2b4 (top view) 1b2 16 2a3 1b3 2a2 15 14 13 2b3 5 6 7 8 1a4 1a3 2b2 1b4 2a1 12 11 9 10 gnd 2b1 ft (tssop20-p-0044-0.65a) fk (vssop20-p-0030-0.50) tc7mb3244c 2 oe 1 oe 1 2 3 4 5 a3 a4 a5 a6 a7 6789 10 15 13 12 11 a8 gnd b8 b7 b6 b1 b2 b3 b4 b5 20 19 18 17 16 a2 a1 nc v cc oe 14 14
tc7mb3244c,3245cft/fk/ftg 2014-03-01 3 truth table inputs oe function l a port = b port h disconnect system diagram a1 b1 a8 b8 oe tc7mb3244c 1a1 1b1 1a4 1b4 oe1 2a1 2b1 2a4 2b4 oe2 tc7mb3245c
tc7mb3244c,3245cft/fk/ftg 2014-03-01 4 absolute maximum ratings (note) characteristic symbol rating unit power supply range v cc ? 0.5 to 7.0 v control pin input voltage ( oe ) v in ? 0.5 to 7.0 v switch terminal i/o voltage v s ? 0.5 to 7.0 v clump diode current i ik ?50 ma switch i/o current i s 50 ma power dissipation p d 180 mw dc v cc /gnd current i cc /i gnd 100 ma storage temperature t stg ? 65 to 150 c note: exceeding any of the absolute maximum ratings, even br iefly, 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. operat ing temperature/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). operating ranges (note) characteristic symbol rating unit power supply voltage v cc 4.0 to 5.5 v control pin input voltage ( oe ) v in 0 to 5.5 v switch i/o voltage v s 0 to 5.5 v operating temperature t opr ? 40 to 85 c input rise and fall time dt/dv 0 to 10 ns/v note: the operating ranges must be maintained to ensure the normal oper ation of the device. unused control pin inputs must be tied to either v cc or gnd. leave unused switch i/o pins open.
tc7mb3244c,3245cft/fk/ftg 2014-03-01 5 electrical characteristics dc characteristics (ta = ? 40 to 85c) characteristics symbol test condition v cc (v) min typ. max unit ?h? level v ih ? 4.0 to 5.5 2.0 ? ? input voltage ( oe ) ?l? level v il ? 4.0 to 5.5 ? ? 0.8 v input leakage current ( oe ) i in v in = 0 to 5.5 v 4.0 to 5.5 ? ? 1.0 a power-off leakage current i off oe , a,b = 0 to 5.5 v 0 ? ? 10 a off-state leakage current (switch off) i sz a, b = 0 to 5.5 v, oe = v cc 4.0 to 5.5 ? ? 1.0 a v is = 0 v, i is = 30 ma 4.5 ? 3 7 4.5 ? 5 15 on resistance (mote1)(note2) r on v is = 2.4 v, i is = 15 ma 4.0 ? 9 20 i cc v in = v cc or gnd, i out = 0 v 5.5 ? ? 10 a quiescent supply current i cc v in = 3.4 v (one input) 5.5 ? ? 500 a note1: all typical values are at ta=25 c. note2: measured by the voltage drop between a and b pins at the indicated current through the switch. on resistance is determined by the lower of the voltages on the two (a or b) pins. ac characteristics (ta = ? 40 to 85c) characteristics symbol test condition v cc (v) min max unit output enable time t pzl t pzh figure 1, figure 2 4.5 ? 6 ns output disable time t plz t phz figure 1, figure 2 4.5 ? 6 ns capacitive characteristics (ta = 25c) characteristics symbol test condition v cc (v) typ. unit control pin input capacitance c in v in = 0 v (note) 5.0 5 pf switch off terminal capacitance c i/o oe = v cc , v is = 0 v (note) 5.0 4 pf switch on terminal capacitance c i/o oe = gnd , v is = 0 v (note) 5.0 7 pf note: this parameter is guaranteed by design.
tc7mb3244c,3245cft/fk/ftg 2014-03-01 6 0 5 10 15 20 00.5 11.5 22.5 33.5 44.5 v is [v] r on [? ] v cc =4.5v , i is =30m a r on - v is curve typ. ta = 25
tc7mb3244c,3245cft/fk/ftg 2014-03-01 7 ac test circuit ac waveform parameter switch t plz , t pzl 7v t phz , t pzh open o p en 7v gnd switch out p ut measure c l = 50 pf r l = 500 r l r l c l figure 1 90% 10% v ol v oh gnd v cc 50% t phz t pzh t r 2.5 ns t f 2.5 ns 50% v ol v oh outputs enabled 50% t plz t pzl 90% outputs disabled outputs enabled output enable ( oe ) output (a, b) low to off to low output (a, b) high to off to high 10% figure 2 t plz , t phz , t pzl , t pzh
tc7mb3244c,3245cft/fk/ftg 2014-03-01 8 rise and fall times (tr / tf) of the tc7mb3244c,3245c i/o signals the tr(out) and tf(out) values of the output signals are affected by the cr time constant of the input, which consists of the switch terminal capacitance (c i/o ) and the on-resistance (r on ) of the input. in practice, the tr(out) and tf(out) values are also affect ed by the circuit?s capacitance and resistance components other than those of the tc7mb3244c,3245c. the tr / tf (out) values can be approximated as follows. (figure 3 shows the test circuit.) tr / tf out (approx) = - ( c i/o + c l ) ? (r drive+ r on ) ? ln ( ( ( v oh ? v ol ) ? v m ) / ( v oh ? v ol ) ) where, r drive is the output impedance of the previous-stage circuit. calculation example: tr out (approx) = - ( 7 + 15 )e-12 ? ( 120 + 3) ? ln ( ( ( 4.5 - 0 ) ? 2.25 ) / ( 4.5 ? 0 ) ) 1.9 ns calculation conditions: v cc = 4.5v , c l = 15pf , r drive = 120 ? (output impedance of the previous ic), v m = 2.25v (v cc / 2) output of the previous ic = digital (i.e., high-level voltage = v cc ; low-level voltage = gnd) v cc parameter 5.0 0.5 v v m v cc / 2 figure 3 test circuit measure c l tc7mb3244c tc7mb3245c r drive previous ic bn/an r drive = output impedance of the previous ic v ol v oh v m v m measure c l r drive previous ic r drive = output impedance of the previous ic v cc gnd waveform generated without the tc7mb3244c,3245c waveform generated with the tc7mb3244c,3245c added an/bn c i/o (switch on) = r on tr out tf out
tc7mb3244c,3245cft/fk/ftg 2014-03-01 9 package dimensions weight: 0.08 g (typ.)
tc7mb3244c,3245cft/fk/ftg 2014-03-01 10 package dimensions weight: 0.03 g (typ.)
tc7mb3244c,3245cft/fk/ftg 2014-03-01 11 package dimensions weight: 0.0145 g (typ.) vqon20-p-0404-0.50 unit: mm
tc7mb3244c,3245cft/fk/ftg 2014-03-01 12 restrictions on product use ? toshiba corporation, and its subsidiaries and affiliates (collect ively "toshiba"), reserve the right to make changes to the in formation in this document, and related hardware, software and systems (collectively "product") without notice. ? this document and any information herein may not be reproduc ed without prior written permission from toshiba. even with toshiba's written permission, reproduc tion is permissible only if reproduction is without alteration/omission. ? though toshiba works continually to improve product's quality and reliability, product can malfunction or fail. customers are responsible for complying with safety standards and for prov iding adequate designs and safeguards for their hardware, software and systems which minimize risk and avoid situations in which a ma lfunction or failure of product could cause loss of human life, b odily injury or damage to property, including data loss or corruption. before customers use the product, create designs including the product, or incorporate the product into their own applications, cu stomers must also refer to and comply with (a) the latest versions of all relevant toshiba information, including without limitation, this document, the specifications, the data sheets and application notes for product and the precautions and condi tions set forth in the "toshiba semiconductor reliability handbook" and (b) the instructions for the application with which the product will be us ed with or for. customers are solely responsible for all aspe cts of their own product design or applications, including but not limited to (a) determining the appropriateness of the use of this product in such design or applications; (b) eval uating and determining the applicability of any info rmation contained in this document, or in c harts, diagrams, programs, algorithms, sample application circuits, or any other referenced documents; and (c) validating all operatin g parameters for such designs and applications. toshiba assumes no liability for customers' product design or applications. ? product is neither intended nor warranted fo r use in equipments or systems that require extraordinarily high levels of quality and/or reliability, and/or a malfunction or failure of which may cause loss of human life, bodily injury, serious property damage and/or serious public impact ( " unintended use " ). except for specific appl ications as expressly stated in this document, unintended use includes, without limitation, equipment used in nuclear facilities, equipment used in the aerospace industry, medical equipment, equipment used f or automobiles, trains, ships and other transportation, traffic si gnaling equipment, equipment used to control combustions or expl osions, safety devices, elevators and escalators, devices related to electric power, and equipment used in finance-related fields. if you use product for unintended use, toshiba assumes no liability for product. for details, please contact your toshiba sales representative. ? do not disassemble, analyze, reverse-engineer, alter, modify, translate or copy product, whether in whole or in part. ? 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