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1. general description the cbt3257a is a quad 1-of-2 high-speed ttl-compatible multiplexer/demultiplexer. the low on resistance of the switch allows inputs to be connected to outputs without adding propagation delay or generating additional ground bounce noise. output enable ( oe) and select-control (s) inputs select the appropriate nb1 and nb2 outputs for the na input data. the cbt3257a is characterized for operation from - 40 cto+85 c. 2. features n 5 w switch connection between two ports n ttl-compatible input levels n minimal propagation delay through the switch n latch-up protection exceeds 500 ma per jedec standard jesd78 class ii level a n esd protection: u hbm jesd22-a114e exceeds 2000 v u mm jesd22-a115-a exceeds 200 v u cdm jesd22-c101c exceeds 1000 v n multiple package options n speci?ed from - 40 cto+85 c 3. ordering information cbt3257a quad 1-of-2 multiplexer/demultiplexer rev. 04 19 march 2009 product data sheet table 1. ordering information type number temperature range package name description version cbt3257ad - 40 cto+85 c so16 plastic small outline package; 16 leads; body width 3.9 mm sot109-1 cbt3257adb - 40 cto+85 c ssop16 plastic shrink small outline package; 16 leads; body width 5.3 mm sot338-1
cbt3257a_4 ? nxp b.v. 2009. all rights reserved. product data sheet rev. 04 19 march 2009 2 of 16 nxp semiconductors cbt3257a quad 1-of-2 multiplexer/demultiplexer [1] also known as qsop16. 4. functional diagram cbt3257ads - 40 cto+85 c ssop16 [1] plastic shrink small outline package; 16 leads; body width 3.9 mm; lead pitch 0.635 mm sot519-1 cbt3257apw - 40 cto+85 c tssop16 plastic thin shrink small outline package; 16 leads; body width 4.4 mm sot403-1 cbt3257abq - 40 cto+85 c dhvqfn16 plastic dual in-line compatible thermal enhanced very thin quad ?at package; no leads; 16 terminals; body 2.5 3.5 0.85 mm sot763-1 table 1. ordering information continued type number temperature range package name description version fig 1. logic diagram 002aab779 1 15 oe s 4 1a 1b1 2 1b2 3 7 2a 2b1 5 2b2 6 9 3a 3b1 11 3b2 10 12 4a 4b1 14 4b2 13
cbt3257a_4 ? nxp b.v. 2009. all rights reserved. product data sheet rev. 04 19 march 2009 3 of 16 nxp semiconductors cbt3257a quad 1-of-2 multiplexer/demultiplexer 5. pinning information 5.1 pinning fig 2. pin con?guration sot109-1 (so16) and sot519-1 (ssop16) fig 3. pin con?guration sot338-1 (ssop16) and sot403-1 (tssop16) cbt3257a sv cc 1b1 oe 1b2 4b1 1a 4b2 2b1 4a 2b2 3b1 2a 3b2 gnd 3a 001aai364 1 2 3 4 5 6 7 8 10 9 12 11 14 13 16 15 cbt3257a sv cc 1b1 oe 1b2 4b1 1a 4b2 2b1 4a 2b2 3b1 2a 3b2 gnd 3a 001aai365 1 2 3 4 5 6 7 8 10 9 12 11 14 13 16 15 (1) the die substrate is attached to this pad using conductive die attach material. it can not be used as supply pin or input. fig 4. pin con?guration sot763-1 (dhvqfn16) 001aai366 cbt3257a 2a 3b2 2b2 3b1 2b1 4a 1a 4b2 1b2 4b1 1b1 oe gnd 3a s v cc transparent top view 7 10 6 11 5 12 4 13 3 14 2 15 8 9 1 16 terminal 1 index area gnd (1)
cbt3257a_4 ? nxp b.v. 2009. all rights reserved. product data sheet rev. 04 19 march 2009 4 of 16 nxp semiconductors cbt3257a quad 1-of-2 multiplexer/demultiplexer 5.2 pin description 6. functional description 7. limiting values [1] the input and output negative voltage ratings may be exceeded if the input and output clamp current ratings are observed. [2] for so16 package: p tot derates linearly with 8 mw/k above 70 c. [3] for ssop16 and tssop16 package: p tot derates linearly with 5.5 mw/k above 70 c. [4] for dhvqfn16 package: p tot derates linearly with 4.5 mw/k above 70 c. table 2. pin description symbol pin description s 1 select control input 1b1, 2b1, 3b1, 4b1, 2, 5, 11, 14 b1 outputs/inputs 1b2, 2b2, 3b2, 4b2 3, 6, 10, 13 b2 outputs/inputs 1a, 2a, 3a, 4a 4, 7, 9, 12 a inputs/outputs gnd 8 ground (0 v) oe 15 output enable (active low) v cc 16 positive supply voltage table 3. function selection h = high voltage level; l = low voltage level; x = dont care. inputs switch oe s l l na to nb1 l h na to nb2 h x switch off table 4. limiting values in accordance with the absolute maximum rating system (iec 60134). symbol parameter conditions min max unit v cc supply voltage - 0.5 +7.0 v v i input voltage [1] - 0.5 +7.0 v i sw switch current continuous current through each switch - 128 ma i ik input clamping current v i <0v - 50 - ma t stg storage temperature - 65 +150 c p tot total power dissipation t amb = - 40 c to +125 c so16 package [2] - 500 mw ssop16 package [3] - 500 mw tssop16 package [3] - 500 mw dhvqfn16 package [4] - 500 mw
cbt3257a_4 ? nxp b.v. 2009. all rights reserved. product data sheet rev. 04 19 march 2009 5 of 16 nxp semiconductors cbt3257a quad 1-of-2 multiplexer/demultiplexer 8. recommended operating conditions 9. static characteristics [1] all typical values are measured at v cc =5v; t amb =25 c. [2] this is the increase in supply current for each input that is at the speci?ed ttl voltage level rather than v cc or gnd. [3] measured by the voltage drop between the a and the b terminals at the indicated current through the switch. on resistance is determined by the lowest voltage of the two (a or b) terminals. table 5. operating conditions all unused control inputs of the device must be held at v cc or gnd to ensure proper device operation. symbol parameter conditions min max unit v cc supply voltage 4.5 5.5 v v ih high-level input voltage 2.0 - v v il low-level input voltage - 0.8 v t amb ambient temperature operating in free-air - 40 +85 c table 6. static characteristics t amb = - 40 c to +85 c. symbol parameter conditions min typ [1] max unit v ik input clamping voltage v cc = 4.5 v; i i = - 18 ma - - - 1.2 v v pass pass voltage v i =v cc = 5.0 v; i o = - 100 m a 3.4 3.6 3.9 v i i input leakage current v cc = 5.5 v; v i = gnd or 5.5 v - - 1 m a i cc supply current v cc = 5.5 v; i o = 0 ma; v i =v cc or gnd --3 m a d i cc additional supply current per input; v cc = 5.5 v; one input at 3.4 v, other inputs at v cc or gnd [2] - - 2.5 ma c i input capacitance control pins; v i = 3 v or 0 v - 3.3 - pf c io(off) off-state input/output capacitance a port; v o = 3 v or 0 v; oe = v cc - 9.9 - pf b port; v o = 3 v or 0 v; oe = v cc - 6.4 - pf r on on resistance v cc = 4.5 v [3] v i =0v; i i =64ma - 5 7 w v i =0v; i i =30ma - 5 7 w v i = 2.4 v; i i = 15 ma - 10 15 w
cbt3257a_4 ? nxp b.v. 2009. all rights reserved. product data sheet rev. 04 19 march 2009 6 of 16 nxp semiconductors cbt3257a quad 1-of-2 multiplexer/demultiplexer 10. dynamic characteristics [1] this parameter is warranted but not production tested. the propagation delay is based on the rc time constant of the typical on resistance of the switch and a load capacitance, when driven by an ideal voltage source (zero output impedance). [2] t plh and t phl are the same as t pd . t pzl and t pzh are the same as t en . t plz and t phz are the same as t dis . 11. ac waveforms table 7. dynamic characteristics t amb = - 40 c to +85 c; v cc = 4.5 v to 5.5 v; for test circuit see figure 7 . symbol parameter conditions min max unit t pd propagation delay na to nbn or nbn to na; see figure 5 [1] [2] - 0.25 ns s to na or nbn; see figure 5 [1] [2] 1.6 5.0 ns t en enable time oe to na or nbn; see figure 6 [2] 1.8 5.1 ns s to na or nbn; see figure 6 [2] 1.6 5.2 ns t dis disable time oe to na or nbn; see figure 6 [2] 2.2 5.5 ns s to na or nbn; see figure 6 [2] 1.0 5.0 ns measurement points are given in t ab le 8 . v ol and v oh are typical voltage output levels that occur with the output load. fig 5. the input (na; nbn) to output (nbn; na) or input (s) to output (nbn; na) propagation delay times 001aai367 v m v m v m v m v i input 0 v v oh output v ol t phl t plh
cbt3257a_4 ? nxp b.v. 2009. all rights reserved. product data sheet rev. 04 19 march 2009 7 of 16 nxp semiconductors cbt3257a quad 1-of-2 multiplexer/demultiplexer measurement points are given in t ab le 8 . v ol and v oh are typical voltage output levels that occur with the output load. fig 6. enable and disable times 001aai368 t plz t phz outputs disabled outputs enabled v y v x outputs enabled output low-to-off off-to-low output high-to-off off-to-high oe, s input v i v ol v oh v cc v m gnd gnd t pzl t pzh v m v m table 8. measurement points supply voltage input output v cc v i v m v m v x v y 4.5 v to 5.5 v gnd to 3.0 v 1.5 v 1.5 v v ol + 0.3 v v oh - 0.3 v
cbt3257a_4 ? nxp b.v. 2009. all rights reserved. product data sheet rev. 04 19 march 2009 8 of 16 nxp semiconductors cbt3257a quad 1-of-2 multiplexer/demultiplexer 12. test information test data is given in t ab le 9 . de?nitions for test circuit: r l = load resistance. c l = load capacitance including jig and probe capacitance. r t = termination resistance should be equal to the output impedance z o of the pulse generator. v ext = external voltage for measuring switching times. fig 7. test circuit for measuring switching times v m v m t w t w 10 % 90 % 0 v v i v i negative pulse positive pulse 0 v v m v m 90 % 10 % t f t r t r t f 001aae331 v ext v cc v i v o dut c l r t r l r l g table 9. test data supply voltage input load v ext v cc v i t r , t f c l r l t plh , t phl t plz , t pzl t phz , t pzh 4.5 v to 5.5 v gnd to 3.0 v 2.5 ns 50 pf 500 w open 7.0 v open
cbt3257a_4 ? nxp b.v. 2009. all rights reserved. product data sheet rev. 04 19 march 2009 9 of 16 nxp semiconductors cbt3257a quad 1-of-2 multiplexer/demultiplexer 13. package outline fig 8. package outline sot109-1 (so16) x w m q a a 1 a 2 b p d h e l p q detail x e z e c l v m a (a ) 3 a 8 9 1 16 y pin 1 index unit a max. a 1 a 2 a 3 b p cd (1) e (1) (1) eh e ll p qz y w v q references outline version european projection issue date iec jedec jeita mm inches 1.75 0.25 0.10 1.45 1.25 0.25 0.49 0.36 0.25 0.19 10.0 9.8 4.0 3.8 1.27 6.2 5.8 0.7 0.6 0.7 0.3 8 0 o o 0.25 0.1 dimensions (inch dimensions are derived from the original mm dimensions) note 1. plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included. 1.0 0.4 sot109-1 99-12-27 03-02-19 076e07 ms-012 0.069 0.010 0.004 0.057 0.049 0.01 0.019 0.014 0.0100 0.0075 0.39 0.38 0.16 0.15 0.05 1.05 0.041 0.244 0.228 0.028 0.020 0.028 0.012 0.01 0.25 0.01 0.004 0.039 0.016 0 2.5 5 mm scale so16: plastic small outline package; 16 leads; body width 3.9 mm sot109-1
cbt3257a_4 ? nxp b.v. 2009. all rights reserved. product data sheet rev. 04 19 march 2009 10 of 16 nxp semiconductors cbt3257a quad 1-of-2 multiplexer/demultiplexer fig 9. package outline sot338-1 (ssop16) unit a 1 a 2 a 3 b p cd (1) e (1) eh e ll p qz y w v q references outline version european projection issue date iec jedec jeita mm 0.21 0.05 1.80 1.65 0.25 0.38 0.25 0.20 0.09 6.4 6.0 5.4 5.2 0.65 1.25 7.9 7.6 1.03 0.63 0.9 0.7 1.00 0.55 8 0 o o 0.13 0.2 0.1 dimensions (mm are the original dimensions) note 1. plastic or metal protrusions of 0.25 mm maximum per side are not included. sot338-1 99-12-27 03-02-19 (1) w m b p d h e e z e c v m a x a y 1 8 16 9 q a a 1 a 2 l p q detail x l (a ) 3 mo-150 pin 1 index 0 2.5 5 mm scale ssop16: plastic shrink small outline package; 16 leads; body width 5.3 mm sot338-1 a max. 2
cbt3257a_4 ? nxp b.v. 2009. all rights reserved. product data sheet rev. 04 19 march 2009 11 of 16 nxp semiconductors cbt3257a quad 1-of-2 multiplexer/demultiplexer fig 10. package outline sot519-1 (ssop16) unit a 1 a 2 a 3 b p cd (1) e (1) eh e ll p z y w v q references outline version european projection issue date iec jedec jeita mm 0.25 0.10 1.55 1.40 0.25 0.31 0.20 0.25 0.18 5.0 4.8 4.0 3.8 0.635 1 6.2 5.8 0.89 0.41 0.18 0.05 8 0 o o 0.18 0.2 0.09 dimensions (mm are the original dimensions) note 1. plastic or metal protrusions of 0.2 mm maximum per side are not included. sot519-1 99-05-04 03-02-18 (1) w m b p d h e e z e c v m a x a y 1 8 16 9 q a a 1 a 2 l p detail x l (a ) 3 0 2.5 5 mm scale ssop16: plastic shrink small outline package; 16 leads; body width 3.9 mm; lead pitch 0.635 mm sot519-1 a max. 1.73
cbt3257a_4 ? nxp b.v. 2009. all rights reserved. product data sheet rev. 04 19 march 2009 12 of 16 nxp semiconductors cbt3257a quad 1-of-2 multiplexer/demultiplexer fig 11. package outline sot403-1 (tssop16) unit a 1 a 2 a 3 b p cd (1) e (2) (1) eh e ll p qz y w v q references outline version european projection issue date iec jedec jeita mm 0.15 0.05 0.95 0.80 0.30 0.19 0.2 0.1 5.1 4.9 4.5 4.3 0.65 6.6 6.2 0.4 0.3 0.40 0.06 8 0 o o 0.13 0.1 0.2 1 dimensions (mm are the original dimensions) notes 1. plastic or metal protrusions of 0.15 mm maximum per side are not included. 2. plastic interlead protrusions of 0.25 mm maximum per side are not included. 0.75 0.50 sot403-1 mo-153 99-12-27 03-02-18 w m b p d z e 0.25 18 16 9 q a a 1 a 2 l p q detail x l (a ) 3 h e e c v m a x a y 0 2.5 5 mm scale tssop16: plastic thin shrink small outline package; 16 leads; body width 4.4 mm sot403-1 a max. 1.1 pin 1 index
cbt3257a_4 ? nxp b.v. 2009. all rights reserved. product data sheet rev. 04 19 march 2009 13 of 16 nxp semiconductors cbt3257a quad 1-of-2 multiplexer/demultiplexer fig 12. package outline sot763-1 (dhvqfn16) terminal 1 index area 0.5 1 a 1 e h b unit y e 0.2 c references outline version european projection issue date iec jedec jeita mm 3.6 3.4 d h 2.15 1.85 y 1 2.6 2.4 1.15 0.85 e 1 2.5 0.30 0.18 0.05 0.00 0.05 0.1 dimensions (mm are the original dimensions) sot763-1 mo-241 - - - - - - 0.5 0.3 l 0.1 v 0.05 w 0 2.5 5 mm scale sot763-1 dhvqfn16: plastic dual in-line compatible thermal enhanced very thin quad flat package; no leads; 16 terminals; body 2.5 x 3.5 x 0.85 mm a (1) max. a a 1 c detail x y y 1 c e l e h d h e e 1 b 27 15 10 9 8 1 16 x d e c b a terminal 1 index area a c c b v m w m e (1) note 1. plastic or metal protrusions of 0.075 mm maximum per side are not included. d (1) 02-10-17 03-01-27
cbt3257a_4 ? nxp b.v. 2009. all rights reserved. product data sheet rev. 04 19 march 2009 14 of 16 nxp semiconductors cbt3257a quad 1-of-2 multiplexer/demultiplexer 14. abbreviations 15. revision history table 10. abbreviations acronym description cdm charged device model esd electrostatic discharge hbm human body model mm machine model ttl transistor-transistor logic table 11. revision history document id release date data sheet status change notice supersedes cbt3257a_4 20090319 product data sheet - cbt3257a_3 modi?cations: ? t ab le 4 limiting v alues modi?ed. cbt3257a_3 20080704 product data sheet - cbt3257a_2 cbt3257a_2 20070704 product data sheet - cbt3257a_1 cbt3257a_1 20051027 product data sheet - -
cbt3257a_4 ? nxp b.v. 2009. all rights reserved. product data sheet rev. 04 19 march 2009 15 of 16 nxp semiconductors cbt3257a quad 1-of-2 multiplexer/demultiplexer 16. legal information 16.1 data sheet status [1] please consult the most recently issued document before initiating or completing a design. [2] the term short data sheet is explained in section de?nitions. [3] the product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple dev ices. the latest product status information is available on the internet at url http://www .nxp .com . 16.2 de?nitions draft the document is a draft version only. the content is still under internal review and subject to formal approval, which may result in modi?cations or additions. nxp semiconductors does not give any representations or warranties as to the accuracy or completeness of information included herein and shall have no liability for the consequences of use of such information. short data sheet a short data sheet is an extract from a full data sheet with the same product type number(s) and title. a short data sheet is intended for quick reference only and should not be relied upon to contain detailed and full information. for detailed and full information see the relevant full data sheet, which is available on request via the local nxp semiconductors sales of?ce. in case of any inconsistency or con?ict with the short data sheet, the full data sheet shall prevail. 16.3 disclaimers general information in this document is believed to be accurate and reliable. however, nxp semiconductors does not give any representations or warranties, expressed or implied, as to the accuracy or completeness of such information and shall have no liability for the consequences of use of such information. right to make changes nxp semiconductors reserves the right to make changes to information published in this document, including without limitation speci?cations and product descriptions, at any time and without notice. this document supersedes and replaces all information supplied prior to the publication hereof. suitability for use nxp semiconductors products are not designed, authorized or warranted to be suitable for use in medical, military, aircraft, space or life support equipment, nor in applications where failure or malfunction of an nxp semiconductors product can reasonably be expected to result in personal injury, death or severe property or environmental damage. nxp semiconductors accepts no liability for inclusion and/or use of nxp semiconductors products in such equipment or applications and therefore such inclusion and/or use is at the customers own risk. applications applications that are described herein for any of these products are for illustrative purposes only. nxp semiconductors makes no representation or warranty that such applications will be suitable for the speci?ed use without further testing or modi?cation. limiting values stress above one or more limiting values (as de?ned in the absolute maximum ratings system of iec 60134) may cause permanent damage to the device. limiting values are stress ratings only and operation of the device at these or any other conditions above those given in the characteristics sections of this document is not implied. exposure to limiting values for extended periods may affect device reliability. terms and conditions of sale nxp semiconductors products are sold subject to the general terms and conditions of commercial sale, as published at http://www .nxp .com/pro? le/ter ms , including those pertaining to warranty, intellectual property rights infringement and limitation of liability, unless explicitly otherwise agreed to in writing by nxp semiconductors. in case of any inconsistency or con?ict between information in this document and such terms and conditions, the latter will prevail. no offer to sell or license nothing in this document may be interpreted or construed as an offer to sell products that is open for acceptance or the grant, conveyance or implication of any license under any copyrights, patents or other industrial or intellectual property rights. export control this document as well as the item(s) described herein may be subject to export control regulations. export might require a prior authorization from national authorities. 16.4 trademarks notice: all referenced brands, product names, service names and trademarks are the property of their respective owners. 17. contact information for more information, please visit: http://www .nxp.com for sales of?ce addresses, please send an email to: salesad dresses@nxp.com document status [1] [2] product status [3] de?nition objective [short] data sheet development this document contains data from the objective speci?cation for product development. preliminary [short] data sheet quali?cation this document contains data from the preliminary speci?cation. product [short] data sheet production this document contains the product speci?cation.
nxp semiconductors cbt3257a quad 1-of-2 multiplexer/demultiplexer ? nxp b.v. 2009. all rights reserved. for more information, please visit: http://www.nxp.com for sales office addresses, please send an email to: salesaddresses@nxp.com date of release: 19 march 2009 document identifier: cbt3257a_4 please be aware that important notices concerning this document and the product(s) described herein, have been included in section legal information. 18. contents 1 general description . . . . . . . . . . . . . . . . . . . . . . 1 2 features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 3 ordering information . . . . . . . . . . . . . . . . . . . . . 1 4 functional diagram . . . . . . . . . . . . . . . . . . . . . . 2 5 pinning information . . . . . . . . . . . . . . . . . . . . . . 3 5.1 pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 5.2 pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4 6 functional description . . . . . . . . . . . . . . . . . . . 4 7 limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 4 8 recommended operating conditions. . . . . . . . 5 9 static characteristics. . . . . . . . . . . . . . . . . . . . . 5 10 dynamic characteristics . . . . . . . . . . . . . . . . . . 6 11 ac waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . 6 12 test information . . . . . . . . . . . . . . . . . . . . . . . . . 8 13 package outline . . . . . . . . . . . . . . . . . . . . . . . . . 9 14 abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . 14 15 revision history . . . . . . . . . . . . . . . . . . . . . . . . 14 16 legal information. . . . . . . . . . . . . . . . . . . . . . . 15 16.1 data sheet status . . . . . . . . . . . . . . . . . . . . . . 15 16.2 de?nitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 16.3 disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 16.4 trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 17 contact information. . . . . . . . . . . . . . . . . . . . . 15 18 contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

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