1 features description/ordering information SN74LVC157A-Q1 www.ti.com ............................................................................................................................................... scas716c ? september 2003 ? revised april 2008 quadruple 2-line to 1-line data selector/multiplexer qualified for automotive applications esd protection exceeds 2000 v per mil-std-883, method 3015; exceeds 200 v using machine model (c = 200 pf, r = 0) operates from 2 v to 3.6 v inputs accept voltages to 5.5 v max t pd of 5.4 ns at 3.3 v typical v olp (output ground bounce) < 0.8 v at v cc = 3.3 v, t a = 25 c typical v ohv (output v oh undershoot) > 2 v at v cc = 3.3 v, t a = 25 c the sn74lvc157a quadruple 2-line to 1-line data selector/multiplexer is designed for 2.7-v to 3.6-v v cc operation. the device features a common strobe ( g) input. when g is high, all outputs are low. when g is low, a 4-bit word is selected from one of two sources and is routed to the four outputs. the device provides true data. inputs can be driven from either 3.3-v or 5-v devices. this feature allows the use of this device as a translator in a mixed 3.3-v/5-v system environment. ordering information (1) t a package (2) orderable part number top-side marking soic ? d tape and reel sn74lvc157aqdrq1 l157aq1 ? 40 c to 125 c tssop ? pw tape and reel sn74lvc157aqpwrq1 l157aq1 (1) for the most current package and ordering information, see the package option addendum at the end of this document, or see the ti web site at www.ti.com . (2) package drawings, thermal data, and symbolization are available at www.ti.com/packaging . function table inputs output y g a/b a b h x x x l l l l x l l l h x h l h x l l l h x h h 1 please be aware that an important notice concerning availability, standard warranty, and use in critical applications of texas instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. production data information is current as of publication date. copyright ? 2003 ? 2008, texas instruments incorporated products conform to specifications per the terms of the texas instruments standard warranty. production processing does not necessarily include testing of all parameters. d or pw p ackage (t op view) 12 3 4 5 6 7 8 1615 14 13 12 11 10 9 a /b 1a1b 1y 2a 2b 2y gnd v cc g 4a4b 4y 3a 3b 3y
absolute maximum ratings (1) SN74LVC157A-Q1 scas716c ? september 2003 ? revised april 2008 ............................................................................................................................................... www.ti.com logic diagram (positive logic) over operating free-air temperature range (unless otherwise noted) min max unit v cc supply voltage range ? 0.5 6.5 v v i input voltage range (2) ? 0.5 6.5 v v o output voltage range (2) (3) ? 0.5 v cc + 0.5 v i ik input clamp current v i < 0 ? 50 ma i ok output clamp current v o < 0 ? 50 ma i o continuous output current 50 ma continuous current through v cc or gnd 100 ma d package 73 q ja package thermal impedance (4) c/w pw package 108 t stg storage temperature range ? 65 150 c (1) stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. these are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. (2) the input and output negative-voltage ratings may be exceeded if the input and output current ratings are observed. (3) the value of v cc is provided in the recommended operating conditions table. (4) the package thermal impedance is calculated in accordance with jesd 51. 2 submit documentation feedback copyright ? 2003 ? 2008, texas instruments incorporated product folder link(s): SN74LVC157A-Q1 23 5 6 11 10 14 13 15 1 g a /b 4b 4a 3b 3a 2b 2a 1b 1a 47 9 12 1y2y 3y 4y
recommended operating conditions (1) electrical characteristics switching characteristics operating characteristics SN74LVC157A-Q1 www.ti.com ............................................................................................................................................... scas716c ? september 2003 ? revised april 2008 min max unit operating 2 3.6 v cc supply voltage v data retention only 1.5 v ih high-level input voltage v cc = 2.7 v to 3.6 v 2 v v il low-level input voltage v cc = 2.7 v to 3.6 v 0.8 v v i input voltage 0 5.5 v v o output voltage 0 v cc v v cc = 2.7 v ? 12 i oh high-level output current ma v cc = 3 v ? 24 v cc = 2.7 v 12 i ol low-level output current ma v cc = 3 v 24 t/ v input transition rise or fall rate 10 ns/v t a operating free-air temperature ? 40 125 c (1) all unused inputs of the device must be held at v cc or gnd to ensure proper device operation. refer to the ti application report, implications of slow or floating cmos inputs, literature number scba004. over recommended operating free-air temperature range (unless otherwise noted) parameter test conditions v cc min max unit i oh = ? 100 m a 2.7 v to 3.6 v v cc ? 0.2 2.7 v 2.2 v oh i oh = ? 12 ma v 3 v 2.4 i oh = ? 24 ma 3 v 2.2 i ol = 100 m a 2.7 v to 3.6 v 0.2 v ol i ol = 12 ma 2.7 v 0.4 v i ol = 24 ma 3 v 0.55 i i all inputs v i = 5.5 v or gnd 3.6 v 5 m a i cc v i = v cc or gnd, i o = 0 3.6 v 10 m a i cc one input at v cc ? 0.6 v, other inputs at v cc or gnd 2.7 v to 3.6 v 500 m a over recommended operating free-air temperature range (unless otherwise noted) (see figure 1 ) v cc = 3.3 v v cc = 2.7 v from to 0.3 v parameter unit (input) (output) min max min max a or b 6.2 0.8 5.4 t pd a/b y 8.2 0.8 7 ns g 7.8 0.8 6.5 t a = 25 c v cc = 2.5 v v cc = 3.3 v test parameter unit conditions typ typ c pd power dissipation capacitance f = 10 mhz 15 16 pf copyright ? 2003 ? 2008, texas instruments incorporated submit documentation feedback 3 product folder link(s): SN74LVC157A-Q1
parameter measurement information SN74LVC157A-Q1 scas716c ? september 2003 ? revised april 2008 ............................................................................................................................................... www.ti.com figure 1. load circuit and voltage waveforms 4 submit documentation feedback copyright ? 2003 ? 2008, texas instruments incorporated product folder link(s): SN74LVC157A-Q1 v m t h t su from output under t est c l (see note a) load circuit s1 v load open gnd r l r l data input t iming input v i 0 vv i 0 v 0 v t w input volt age w aveforms setup and hold times volt age w aveforms propaga tion dela y times inverting and noninverting outputs volt age w aveforms pulse dura tion t plh t phl t phl t plh v oh v oh v ol v ol v i 0 v input output w aveform 1 s1 at v load (see note b) output w aveform 2 s1 at gnd (see note b) v ol v oh t pzl t pzh t plz t phz v load /2 0 v v ol + v v oh - v 0 v v i volt age w aveforms enable and disable times low - and high-level enabling outputoutput t plh /t phl t plz /t pzl t phz /t pzh open v load gnd test s1 notes: a. c l includes probe and jig capacitance. b. w aveform 1 is for an output with internal conditions such that the output is low , except when disabled by the output control. waveform 2 is for an output with internal conditions such that the output is high, except when disabled by the output control. c. all input pulses are supplied by generators having the following characteristics: prr 10 mhz, z o = 50 . d. the outputs are measured one at a time, with one transition per measurement. e. t plz and t phz are the same as t dis . f. t pzl and t pzh are the same as t en . g. t plh and t phl are the same as t pd . h. all parameters and waveforms are not applicable to all devices. output control v m v m v m v m v m v m v m v m v m v m v m v m v i v m v m 2.7 v 3.3 v 0.3 v 500 500 v cc r l 6 v6 v v load c l 50 pf50 pf 0.3 v0.3 v v 2.7 v2.7 v v i 1.5 v1.5 v v m t r /t f 2.5 ns 2.5 ns inputs
package option addendum www.ti.com 25-mar-2015 addendum-page 1 packaging information orderable device status (1) package type package drawing pins package qty eco plan (2) lead/ball finish (6) msl peak temp (3) op temp (c) device marking (4/5) samples clvc157aqpwrg4q1 active tssop pw 16 2000 green (rohs & no sb/br) cu nipdau level-1-260c-unlim -40 to 125 l157aq1 sn74lvc157aqdrg4q1 active soic d 16 2500 green (rohs & no sb/br) cu nipdau level-1-260c-unlim -40 to 125 l157aq1 sn74lvc157aqdrq1 obsolete soic d 16 tbd call ti call ti -40 to 125 sn74lvc157aqpwrq1 active tssop pw 16 2000 green (rohs & no sb/br) cu nipdau level-1-260c-unlim -40 to 125 l157aq1 (1) the marketing status values are defined as follows: active: product device recommended for new designs. lifebuy: ti has announced that the device will be discontinued, and a lifetime-buy period is in effect. nrnd: not recommended for new designs. device is in production to support existing customers, but ti does not recommend using this part in a new design. preview: device has been announced but is not in production. samples may or may not be available. obsolete: ti has discontinued the production of the device. (2) eco plan - the planned eco-friendly classification: pb-free (rohs), pb-free (rohs exempt), or green (rohs & no sb/br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. tbd: the pb-free/green conversion plan has not been defined. pb-free (rohs): ti's terms "lead-free" or "pb-free" mean semiconductor products that are compatible with the current rohs requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. where designed to be soldered at high temperatures, ti pb-free products are suitable for use in specified lead-free processes. pb-free (rohs exempt): this component has a rohs exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. the component is otherwise considered pb-free (rohs compatible) as defined above. green (rohs & no sb/br): ti defines "green" to mean pb-free (rohs compatible), and free of bromine (br) and antimony (sb) based flame retardants (br or sb do not exceed 0.1% by weight in homogeneous material) (3) msl, peak temp. - the moisture sensitivity level rating according to the jedec industry standard classifications, and peak solder temperature. (4) there may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) multiple device markings will be inside parentheses. only one device marking contained in parentheses and separated by a "~" will appear on a device. if a line is indented then it is a continuation of the previous line and the two combined represent the entire device marking for that device. (6) lead/ball finish - orderable devices may have multiple material finish options. finish options are separated by a vertical ruled line. lead/ball finish values may wrap to two lines if the finish value exceeds the maximum column width.
package option addendum www.ti.com 25-mar-2015 addendum-page 2 important information and disclaimer: the information provided on this page represents ti's knowledge and belief as of the date that it is provided. ti bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. efforts are underway to better integrate information from third parties. ti has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. ti and ti suppliers consider certain information to be proprietary, and thus cas numbers and other limited information may not be available for release. in no event shall ti's liability arising out of such information exceed the total purchase price of the ti part(s) at issue in this document sold by ti to customer on an annual basis. other qualified versions of SN74LVC157A-Q1 : ? catalog: sn74lvc157a ? enhanced product: sn74lvc157a-ep ? military: sn54lvc157a note: qualified version definitions: ? catalog - ti's standard catalog product ? enhanced product - supports defense, aerospace and medical applications ? military - qml certified for military and defense applications
tape and reel information *all dimensions are nominal device package type package drawing pins spq reel diameter (mm) reel width w1 (mm) a0 (mm) b0 (mm) k0 (mm) p1 (mm) w (mm) pin1 quadrant clvc157aqpwrg4q1 tssop pw 16 2000 330.0 12.4 6.9 5.6 1.6 8.0 12.0 q1 sn74lvc157aqpwrq1 tssop pw 16 2000 330.0 12.4 6.9 5.6 1.6 8.0 12.0 q1 package materials information www.ti.com 14-mar-2013 pack materials-page 1
*all dimensions are nominal device package type package drawing pins spq length (mm) width (mm) height (mm) clvc157aqpwrg4q1 tssop pw 16 2000 367.0 367.0 35.0 sn74lvc157aqpwrq1 tssop pw 16 2000 367.0 367.0 35.0 package materials information www.ti.com 14-mar-2013 pack materials-page 2
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