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tm 74ac253, 74ACT253 dual 4-input multiplexer with 3-state outputs april 2007 ?988 fairchild semiconductor corporation www.fairchildsemi.com 74ac253, 74ACT253 rev. 1.5 74ac253, 74ACT253 dual 4-input multiplexer with 3-state outputs features i cc and i oz reduced by 50% multifunction capability non inverting 3-state outputs outputs source/sink 24ma act253 has ttl-compatible inputs general description the ac/act253 is a dual 4-input multiplexer with 3-state outputs. it can select two bits of data from four sources using common select inputs. the outputs may be individually switched to a high impedance state with a high on the respective output enable (oe ) inputs, allowing the outputs to interface directly with bus oriented systems. ordering information device also available tape and reel. specify by appending suffix letter ??to the ordering number. connection diagram pin descriptions order number package number pa ck ag e description 74ac253sc m16a 16-lead small outline integrated circuit (soic), jedec ms-012, 0.150" narrow 74ac253sj m16d 16-lead small outline package (sop), eiaj type ii, 5.3mm wide 74ac253pc n16e 16-lead plastic dual-in-line package (pdip), jedec ms-001, 0.300" wide 74ACT253sc m16a 16-lead small outline integrated circuit (soic), jedec ms-012, 0.150" narrow 74ACT253sj m16d 16-lead small outline package (sop), eiaj type ii, 5.3mm wide 74ACT253mtc mtc16 16-lead thin shrink small outline package (tssop), jedec mo-153, 4.4mm wide pin names description i 0a ? 3a side a data inputs i 0b ? 3b side b data inputs s 0 , s 1 common select inputs oe a side a output enable input oe b side b output enable input z a , z b 3-state outputs fact is a trademark of fairchild semiconductor corporation.
74ac253, 74ACT253 dual 4-input multiplexer with 3-state outputs ?988 fairchild semiconductor corporation www.fairchildsemi.com 74ac253, 74ACT253 rev. 1.5 2 logic diagram ieee/iec functional description the ac/act253 contains two identical 4-input multiplex- ers with 3-state outputs. they select two bits from four sources selected by common select inputs (s 0 , s 1 ). the 4-input multiplexers have individual output enable (oe a , oe b ) inputs which, when high, force the outputs to a high impedance (high z) state. this device is the logic implementation of a 2-pole, 4-position switch, where the position of the switch is determined by the logic levels supplied to the two select inputs. the logic equations for the outputs are shown: z a = oe a ?i 0a ?s 1 ?s 0 + i 1a ?s 1 ?s 0 + i 2a ?s 1 ?s 0 + i 3a ?s 1 ?s 0 ) z b = oe b ?i 0b ?s 1 ?s 0 + i 1b ?s 1 ?s 0 + i 2b ?s 1 ?s 0 + i 3b ?s 1 ?s 0 ) if the outputs of 3-state devices are tied together, all but one device must be in the high impedance state to avoid high currents that would exceed the maximum ratings. designers should ensure that output enable signals to 3-state devices whose outputs are tied together are designed so that there is no overlap. t ruth table address inputs s 0 and s 1 are common to both sections. h = high voltage level l = low voltage level x = immaterial z = high impedance select inputs data inputs output enable outputs s 0 s 1 i 0 i 1 i 2 i 3 oe z xxxxxx h z lllxxx l l llh xxx l h h lxlxx l l hl xhxx l h lhx xlx l l lhx xhx l h hh xxxl l l hh xxxh l h
74ac253, 74ACT253 dual 4-input multiplexer with 3-state outputs ?988 fairchild semiconductor corporation www.fairchildsemi.com 74ac253, 74ACT253 rev. 1.5 3 logic diagram please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays. figure 1.
74ac253, 74ACT253 dual 4-input multiplexer with 3-state outputs ?988 fairchild semiconductor corporation www.fairchildsemi.com 74ac253, 74ACT253 rev. 1.5 4 absolute maximum ratings stresses exceeding the absolute maximum ratings may damage the device. the device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. in addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. the absolute maximum ratings are stress ratings only. recommended operating conditions the recommended operating conditions table defines the conditions for actual device operation. recommended operating conditions are specified to ensure optimal performance to the datasheet specifications. fairchild does not recommend exceeding them or designing to absolute maximum ratings. symbol parameter rating v cc supply voltage ?.5v to +7.0v i ik dc input diode current v i = ?.5v v i = v cc + 0.5v ?0ma +20ma v i dc input voltage ?.5v to v cc + 0.5v i ok dc output diode current v o = ?.5v v o = v cc + 0.5v ?0ma +20ma v o dc output voltage ?.5v to v cc + 0.5v i o dc output source or sink current ?0ma i cc or i gnd dc v cc or ground current per output pin ?0ma t stg storage temperature ?5? to +150? t j j unction temperature 140? symbol parameter rating v cc supply voltage ac act 2.0v to 6.0v 4.5v to 5.5v v i input voltage 0v to v cc v o output voltage 0v to v cc t a operating temperature ?0? to +85? ? v / ? t minimum input edge rate, ac devices: v in from 30% to 70% of v cc , v cc @ 3.3v, 4.5v, 5.5v 125mv/ns ? v / ? t minimum input edge rate, act devices: v in from 0.8v to 2.0v, v cc @ 4.5v, 5.5v 125mv/ns
74ac253, 74ACT253 dual 4-input multiplexer with 3-state outputs ?988 fairchild semiconductor corporation www.fairchildsemi.com 74ac253, 74ACT253 rev. 1.5 5 dc electrical characteristics for ac notes: 1. all outputs loaded; thresholds on input associated with output under test. 2. maximum test duration 2.0ms, one output loaded at a time. 3. i in and i cc @ 3.0v are guaranteed to be less than or equal to the respective limit @ 5.5v v cc . symbol parameter v cc (v) conditions t a = +25? t a = ?0? to +85? units t yp. guaranteed limits v ih minimum high level input voltage 3.0 v out = 0.1v or v cc ?0.1v 1.5 2.1 2.1 v 4.5 2.25 3.15 3.15 5.5 2.75 3.85 3.85 v il maximum low level input voltage 3.0 v out = 0.1v or v cc ?0.1v 1.5 0.9 0.9 v 4.5 2.25 1.35 1.35 5.5 2.75 1.65 1.65 v oh minimum high level output voltage 3.0 i out = ?0? 2.99 2.9 2.9 v 4.5 4.49 4.4 4.4 5.5 5.49 5.4 5.4 v in = v il or v ih : 3.0 i oh = ?2ma 2.56 2.46 4.5 i oh = ?4ma 3.86 3.76 5.5 i oh = ?4ma (1) 4.86 4.76 v ol maximum low level output voltage 3.0 i out = 50? 0.002 0.1 0.1 v 4.5 0.001 0.1 0.1 5.5 0.001 0.1 0.1 v in = v il or v ih : 3.0 i ol = 12ma 0.36 0.44 4.5 i ol = 24ma 0.36 0.44 5.5 i ol = 24ma (1) 0.36 0.44 i in (3) maximum input leakage current 5.5 v i = v cc , gnd ?.1 ?.0 ? i oz maximum 3-state current 5.5 v i (oe) = v il , v ih ; v i = v cc , gnd; v o = v cc , gnd ?.25 ?.5 ? i old minimum dynamic output current (2) 5.5 v old = 1.65v max. 75 ma i ohd 5.5 v ohd = 3.85v min. ?5 ma i cc (3) maximum quiescent supply current 5.5 v in = v cc or gnd 4.0 40.0 ?
74ac253, 74ACT253 dual 4-input multiplexer with 3-state outputs ?988 fairchild semiconductor corporation www.fairchildsemi.com 74ac253, 74ACT253 rev. 1.5 6 dc electrical characteristics for act notes: 4. all outputs loaded; thresholds on input associated with output under test. 5. maximum test duration 2.0ms, one output loaded at a time. symbol parameter v cc (v) conditions t a = +25? t a = ?0? to +85? units t yp. guaranteed limits v ih minimum high level input voltage 4.5 v out = 0.1v or v cc ?0.1v 1.5 2.0 2.0 v 5.5 1.5 2.0 2.0 v il maximum low level input voltage 4.5 v out = 0.1v or v cc ?0.1v 1.5 0.8 0.8 v 5.5 1.5 0.8 0.8 v oh minimum high level output voltage 4.5 i out = ?0? 4.49 4.4 4.4 v 5.5 5.49 5.4 5.4 v in = v il or v ih : 4.5 i oh = ?4ma 3.86 3.76 5.5 i oh = ?4ma (4) 4.86 4.76 v ol maximum low level output voltage 4.5 i out = 50? 0.001 0.1 0.1 v 5.5 0.001 0.1 0.1 v in = v il or v ih : 4.5 i ol = 24ma 0.36 0.44 5.5 i ol = 24ma (4) 0.36 0.44 i in maximum input leakage current 5.5 v i = v cc , gnd ?.1 ?.0 ? i oz maximum 3-state current 5.5 v i = v il , v ih ; v o = v cc , gnd ?.25 ?.5 ? i cct maximum i cc /input 5.5 v i = v cc ?2.1v 0.6 1.5 ma i old minimum dynamic output current (5) 5.5 v old = 1.65v max. 75 ma i ohd 5.5 v ohd = 3.85v min. ?5 ma i cc maximum quiescent supply current 5.5 v in = v cc or gnd 4.0 40.0 ?
74ac253, 74ACT253 dual 4-input multiplexer with 3-state outputs ?988 fairchild semiconductor corporation www.fairchildsemi.com 74ac253, 74ACT253 rev. 1.5 7 ac electrical characteristics for ac note: 6. voltage range 3.3 is 3.3v ?0.3v. voltage range 5.0 is 5.0v ?0.5v. ac electrical characteristics for act note: 7. voltage range 5.0 is 5.0v ?0.5v. capacitance symbol parameter v cc (v) (6) t a = +25? c l = 50pf t a = ?0? to +85?, c l = 50pf units min. typ. max. min max t plh propagation delay, s n to z n 3.3 2.0 8.5 15.5 2.0 17.5 ns 5.0 2.0 6.5 11.0 1.5 12.5 t phl propagation delay, s n to z n 3.3 2.5 9.5 16.0 2.0 18.0 ns 5.0 2.0 7.0 11.5 1.5 13.0 t plh propagation delay, i n to z n 3.3 1.5 7.0 14.5 1.5 17.0 ns 5.0 1.5 5.5 10.0 1.5 11.5 t phl propagation delay, i n to z n 3.3 2.0 7.5 13.0 1.5 15.0 ns 5.0 1.5 5.5 9.5 1.5 11.0 t pzh output enable time 3.3 1.5 4.5 8.0 1.0 8.5 ns 5.0 1.5 3.5 6.0 1.0 6.5 t pzl output enable time 3.3 1.5 5.0 8.0 1.0 9.0 ns 5.0 1.5 3.5 6.0 1.0 7.0 t phz output disable time 3.3 2.0 5.5 9.5 1.5 10.0 ns 5.0 2.0 5.0 8.0 1.5 8.5 t plz output disable time 3.3 1.5 5.0 8.0 1.0 9.0 ns 5.0 1.5 4.0 7.0 1.0 7.5 symbol parameter v cc (v) (7) t a = +25?, c l = 50pf t a = ?0? to +85?, c l = 50pf units min. typ. max. min. max. t plh propagation delay, s n to z n 5.0 2.0 7.0 11.5 2.0 13.0 ns t phl propagation delay, s n to z n 5.0 3.0 7.5 13.0 2.5 14.5 ns t plh propagation delay, i n to z n 5.0 2.5 5.5 10.0 2.0 11.0 ns t phl propagation delay, i n to z n 5.0 3.5 6.5 11.0 3.0 12.5 ns t pzh output enable time 5.0 2.0 4.5 7.5 1.5 8.5 ns t pzl output enable time 5.0 2.0 5.0 8.0 1.5 9.0 ns t phz output disable time 5.0 3.0 6.0 9.5 2.5 10.0 ns t plz output disable time 5.0 2.5 4.5 7.5 2.0 8.5 ns symbol parameter conditions typ. units c in input capacitance v cc = open 4.5 pf c pd po w er dissipation capacitance v cc = 5.0v 50.0 pf
74ac253, 74ACT253 dual 4-input multiplexer with 3-state outputs ?988 fairchild semiconductor corporation www.fairchildsemi.com 74ac253, 74ACT253 rev. 1.5 8 physical dimensions dimensions are in millimeters unless otherwise noted. figure 2. 16-lead small outline integrated circuit (soic), jedec ms-012, 0.150" narrow pa ck ag e number m16a
74ac253, 74ACT253 dual 4-input multiplexer with 3-state outputs ?988 fairchild semiconductor corporation www.fairchildsemi.com 74ac253, 74ACT253 rev. 1.5 9 physical dimensions (continued) dimensions are in millimeters unless otherwise noted. figure 3. 16-lead small outline package (sop), eiaj type ii, 5.3mm wide pa ck ag e number m16d
74ac253, 74ACT253 dual 4-input multiplexer with 3-state outputs ?988 fairchild semiconductor corporation www.fairchildsemi.com 74ac253, 74ACT253 rev. 1.5 10 physical dimensions (continued) dimensions are in millimeters unless otherwise noted. figure 4. 16-lead thin shrink small outline package (tssop), jedec mo-153, 4.4mm wide pa ck ag e number mtc16 0.65 4.40.1 mtc16rev4 0.11 4.55 5.00 5.000.10 12 7.35 4.45 1.45 5.90
74ac253, 74ACT253 dual 4-input multiplexer with 3-state outputs ?988 fairchild semiconductor corporation www.fairchildsemi.com 74ac253, 74ACT253 rev. 1.5 11 physical dimensions (continued) dimensions are in inches (millimeters) unless otherwise noted. figure 5. 16-lead plastic dual-in-line package (pdip), jedec ms-001, 0.300 wide pa ck ag e number n16e
74ac253, 74ACT253 dual 4-input multiplexer with 3-state outputs ?988 fairchild semiconductor corporation www.fairchildsemi.com 74ac253, 74ACT253 rev. 1.5 12 tradem a rks the following are registered and unregistered trademarks fairchild semiconductor owns or is authorized to use and is not intend ed to be an exhaustive list of all such trademarks. acex across the board. around the world. activearray bottomless build it now coolfet crossvolt ctl current transfer logic dome e 2 cmos ecospark ensigna fact quiet series fact fast fastr fps frfet globaloptoisolator gto hisec i-lo implieddisconnect intellimax isoplanar microcoupler micropak microwire msx msxpro ocx ocxpro optologic optoplanar pacman pop power220 power247 poweredge powersaver powertrench programmable active droop qfet qs qt optoelectronics quiet series rapidconfigure rapidconnect scalarpump smart start spm stealth superfet supersot -3 supersot -6 supersot -8 syncfet tcm the power franchise tinyboost tinybuck tinylogic tinyopto tinypower tinywire trutranslation p serdes uhc unifet vcx wire disclaimer fairchild semiconductor reserves the right to make changes without further notice to any products herein to improve reliability, function or design. fairchild does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights, nor the rights of others. these specifications do not expand the terms of fairchild? worldwide terms and conditions, specifically the warranty therein, which covers these products. life support policy fairchild? products are not authorized for use as critical components in life support devices or systems without the express written approval of fairchild semiconductor corporation. as used herein: 1. life support devices or systems are devices or systems wh ich, (a) are intended for surgical implant into the body or (b) support or sustain life, and (c) whose failure to perform w hen properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. a critical component in any component of a life support, device, or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. product status definitions definition of terms datasheet identification product status definition advance information formative or in design this datasheet contains the design specifications for product development. specifications may change in any manner without notice. preliminary first production this datasheet contains preliminary data; supplementary data will be published at a later date. fairchild semiconductor reserves the right to make changes at any time without notice to improve design. no identification needed full production this datasheet contains final specifications. fairchild semiconductor reserves the right to make changes at any time without notice to improve design. obsolete not in production this datasheet contains specifications on a product that has been discontinued by fairchild semiconductor. the datasheet is printed for reference information only. re v. i24

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