Ⅲ ●t● R● L^ sEMlCONDUCTOR TECHNICAL DATA aI● g Ⅲ C74HC4851^ Ⅲ C74HC4852^ Ⅲ C74HC4853^ Ⅲu:t:p:exers/ ^Ⅱ DemuⅡ :pIexers w:th■ mJect:● Ⅱ CurreⅡ t E彳 ect C● mtr● I 惴 Automot∶ ve Custon1ized These devices are pin compatib丨 e to standard Hc405x and MC1405xB og:η ux/demux devices,but feature injection current e仟 eCt Contro丨 ,This makes them especiaⅡ y suited for usage in automotive app"cations where ana丨 ・ Chip Comp|exity∶ 16-LEAD PLAsTlC D丨 P PACKAGE CAsE64BO8 素 D suFFIx Figure11) ・ Power supp丨 y Range(Vccˉ GND)=2.Ot° 6・ OV ・ ln Compliance W忖 h the Requirements ofJEDEC standard x ・ I叫 ecti° n current Cross-Coup丨 ing Less than1mV/mA(see ・ Pin Compatib|eto HC405X and MC1405XB Devices NsuFFˉ voltages in excess of norrη al丨 ogic vo丨 tage are cornrnon。 The injection current effect contro|a"ows signa|s atd丨 sab|ed ana丨 og input channe丨 s to exceed the supp|y vo|tage range、 ″⒒hout a秆 eCting the signa|of the enab丨 ed ana丨 og channe|,This eⅡ minates the need for externa丨 diode/ resistor networks typica"y used to keep the ana丨 og channe丨 signa丨 s within the supp丨 y vo|tage range. The devices uuⅡ ze丨 0wp° wer si丨 icon gate CMOs techno丨 ogy,The Channe| se|ect and Enable inputs are compatib丨 e with standard CMOS outputs. 16-LEAD PLAsTlC sOIC PACKAGE CAsE751B-05 谧 No,7A 154FETs or36Equiva丨 ent Gates Dw suFF∶ x 16-LEAD PLAsT|CW丨 DE sOIC PACKAGE CAsE751G-O2 豢 XO卫 X1 ANALOG lNPUTs/ oUTPUTs 14 DT sUFF∶ X 16-LEAD PLAsTlC TssOP PACKAGE Ⅻ⊥ Xs丝 X4 MULT|PLEXER/ DEMULT丨 1 3 PLEXER CAsE948F-01冖 COMMON 0∪ TPUT/ oRDERING lNFORⅢ |NPUT X5 MC74HCXXXXAN X6 CHANNEL 丨 NPUTs [: ENABLE o" MC74HCXXXXAD sOlC MC74HCXXXXADW sOlC Wide MC74HCXXXXADT TssOP X7 SELECT AT∶ P丨 as‖ c 6 P|N16〓 Vcc P丨 N8〓 GND Figure1.mC74Hc4851A Logic Diagram singIe-Pole,8-Position Plus Common0彳 FUNCTlON tABLE-Ⅲ C74HC4851A x3 A B C EnabIe Α xO eB x1 eˉ x2 c vCC c s Controllnputs ¤N Channels LHLHLHLHx LLHHLLHHx LLLLHHHHx LLLLLLLLH X0 X1 X2 X3 X4 X5 X6 X7 X4 X6 X X7 X5 Enab|e NC NONE GND Figure2.MC74HC4851A丬 s-Lead Pinout lTOp View) ″ ◎ Motorda,lnc.1997 0To90L^ MC74HC4851A MC74HC4852A MC74HC4853A FuNcTlON T^BLE-mc74Hc们 52A Control∶ nputs B EnabIe se∶ eot ^ oN Channels 123 YY |NPUTs/oUTPUTs xxxx Υ Ⅻ上 ANALOG ο Υ LHLHx LLHHx LLLLH X1型 x3∶ 凵 COMMON oUTPUTs/lNPUTS 1 NONE X=Don’ t Care Y1Ⅰ Y2= Y3卫 CHANNEL犭 焉吉鼠 P丨 [:I亘 N16=Vcc P丨 N8=GND ENABLE-旦 Figure3。 MC74HC4852A Logic Diagram DoubIe-Pole,4-Position Plus Common off Υ2 Y0 Y Y3 Y1 Enab|e NC GND Figure4.mC74Hc4852A 16-Lead Pinout(Top View) FVNCTION t^BLE-mc74Hc4853A ControHnputs EnabIe C seIeot B A COMMON oUTPUTS/丨 Υ1」 zzzzzzzz LHLHLHLHx LLHHLLHHx LLLLHHHHx LLLLLLLLH ANALOG ΥO YO Υ1 Υ1 Υ0 Υ0 Y1 Υ1 NONE x1.!!.! |NPUTs/oUTPUTs oN ChanneIs NPUTS Xo X1 Xo X1 X0 X1 X0 X1 X=DOn1Care z1卫 P|N16〓 Vcc P丨 N8〓 GND NOTE∶ This device a"ows independent Contro丨 of eaCh switch, Channe丨 -se丨 ectlnput A contrOIs the X-sWitch,lnput B contro|s the Y-switch and Input C controls the z-sWⅡ ch Figure5。 ⅢC74HC4853A Logic Diagram η "pIe singIe-PoIe,Double_PosⅢ M0TOROLA on PIus Common off Υ1 YO z1 z zO Enab|e NC GND Figure6.mC74HC们 53A10-Lead Pinout(Toρ V。 w) MC74HC4851A MC74HC4852A MC74HC4853A MAXIMuM RATINGs★ symboI vCC Parameter PosiⅡ Ve DC supp|y Vo|tage DC lnput Vo丨 Vin tage(Any Pin) VaIue Power Dissipa‖ onin sⅡ ||Air, PD P丨 V -0,5to Vcc+0・ 5 V fie|ds, Howeveq precautions must ±25 mA 750 500 450 mW astic DIP十 SOlC Package| TssOP Package十 Lead Temperature,1mm from Casefor10seconds TL P|asuc D丨 只 sOlC OrTssOP Package due to high statiC vo|tages ore|eCtHc be taken to avoid app"cations of any vokage higherthan了 ηaXirnum rated vo"ages to this high-irη pedance cir- cuit, For proper operation,Vin and vout sh° u丨 d be cons廿 ained to the -65to+150 storage Temperature Range Tstg 0c range GND兰 0c tied to an appropriate|ogic vo丨 tage FunCtiona丨 operation shou|d be restricted to the Reconη (Vin° r voutl兰 Vcc, Unused inputs must a|ways be |eve| (e.g,l either GND Or Vcc)・ 260 Unused outputs fη ust be|eft open, ★Maxirη um Ratings are those va|ues beyond which damage to the device了 丨Derating ~P|asuc DIP∶ on -0.5to+7.0 DC Current,丨 nto or Out of Any Pin | Th|s deViCe contains protecⅡ circuitn` to guard against damage (Referenced to GND) (Referenced to GND) unit nay° ccur。 mended0perating Conditions, -10rη W/° C from65° to125° C sOlC Package∶ -7mW/° C from65° to125° C Tss0P PaCkage∶ -6,1mW/° C from65° to125° C For high frequency or heavy丨 oad considerations,see Chapter2ofthe MOtoro|a High-speed CM(Ds Data Book(DL129/D), RECOMMENDED oPERATING CONDITIONs symbol vCC Vin v丨 O★ TA tr,tf Ⅲ∶ n Max GND vCC V +125 0c Parameter POsi刂 Ve DC supp|y Vo|tage DC lnput Vo|tage(Any Pin) V (Referenced to GND) (ReferenCed to GND) V staJC or Dynamic Vo|tage Across switch Operating Terη -55 perature Range,A"Package TVpes Input Rise/Fa"Tirne (Channe|se|ect or Enab|e丨 Vcc=2.OV nputs) unit Vcc〓 5v vCC=6・ 0v 4・ 1000 500 400 ★For vo|tage drops across switch greaterthan1,2V(switch on),excessive Vcc current may be drawn;i.e,,thecurrentoutofthesw丨 tch may c° ntain both Vcc and switChinρ utcomponents,The re"abi|ity ofthe device w"丨 be una矸 ected un丨 ess the Maxirη um Ratings are exceeded DC CHAR^CTERlsTlCs-ˉ Digital section(Vo|tages Referenced to GND)VEE=GND,Except Where NOted vCC symboI VlH V丨 L Parameter Minimum Hlgh-Leve丨 Input Voltage, Channe|-se丨 ect or Enab|e lnputs Maximum LOw-Leve|lnput Vo|tage, Condition ROnˉ Per spec ROnˉ Per spec Channe|-se|ect or Enab|e丨 nputs Maximum lnput Leakage Current on v|n〓 vCC orGND Guaranteed Lirη V -55to25° C ζ85° C 2,o 3.0 4.5 6.o 1.50 2.10 3.15 4.20 1.50 2.10 2.0 o50 3.0 4,5 6,o it 兰125° C Unk 1,50 V 3.15 4.20 2,10 3,15 4,20 o.90 o,50 o.90 o,50 o,90 1.35 1.80 1.35 1.80 1,35 1,80 ±0.丬 ± 1,o ±⒈0 uA 40 uA V Digita|Pins(Enab丨 e/A/B/C) lCC Maximum QuiesCent supp|y vin(digita丨 Current(per Package) vin(ana丨 )=vCC° rGND og)=GND NOTE∶ lnformauon° n typica|parametHc va|ues Can be found|n Chapter2ofthe Motoro|a High-speed CMOs Data Book(DL129/D), ^ MOTOROLA MC74HC4851A MC74HC4852A MC74HC4853A DC CH^R^CTERIsTlCs-ˉ Ana∶ og section Guaranteed Lirn∶ symbol Condkion P臼 rameter Maximum“ ON” Resistance R。 n vin〓 v丨 L Or VlH;v丨 GND;Is≤ 2.O mA ΔR。 n Deka“ ON"Resistance vin〓 |s兰 s=vCC to vIL Or VlH;vIs=vCo′ 2 2・ O mA vCC -55to25° C ζ85° C ≤125° C 2.o 3.o 4.5 6,0 17ε o 1100 1750 1200 1800 1300 550 400 650 500 750 600 300 460 400 200 500 240 80 60 100 80 120 100 ⒛ .5 ±1,o +0.2 望 .o u.o ⒛ .2 ±2,0 Ⅲ .o vCC -s5to25° C ≤85° C ≤125° C 2.0 160 80 200 30 180 90 45 35 260 280 160 80 60 180 90 70 300 200 2,o 3.o 4.5 6,o l。 Ⅵaxirnum O″ £ hanne丨 Leakage Current, ff vin=vCC orGND =L().1 Common Channe丨 Maxirnum0n-Channe丨 Leakage n vin〓 vCC orGND 6,o Parameter Ma旧 mum Propagauon De|ay,AnaIog Inputto AnaIog Output tPLH 3,o 4,5 6.o tPHL,tPHz,PzH tPLH,tPLz,PzL Cin Maxirnurn Proρ aga刂 0n De丨 ay,Enable or Channel-select to Maximum lnput Capacitance (A"switches0仟 ) CPD 2.0 3.0 4,5 6.0 AnaIog output (A"switches O仟 ) Ana丨 og P|n Comm° n Analog Pin Tˇ parameter 10 10 35 35 130 pF pF to+125° C) Ⅲ ax unit Maximum shi仕 of Output Vo⒒ age of Enab丨 ed Ana|og o,1 ⒈o o,5 5,o 2,0 mV Channe丨 ★lin=T° ta|currentinjected into a"disab丨 ed channels. MOTOR0LA 10 TVp 0.5 5.o 100 80 35 130 130 unit 100 50 40 pica| lNJECTION CuRRENT CouPLING sPEClF∶ CATIONs(Vcc=5V,TA=ˉ 55° C vΔ out 40 Digita|Pins Any sing丨 e Power Dissipa刂 on Capacitance symbol Ω nput tr=tf=6nsl sVmb。 ∶ tPHL, Ω uA Channel-to-Channe丨 ^C CH^R^CTERlsTlCs(CL=50pE丨 un⒒ uA Any one Channe丨 I。 t 20 Condition ≤1mA,Rs兰 3,9m 丨 in★ 竺 10mA,Rs≤ 3,9m lin★ ζ1mA,Rs兰 2okΩ lin★ 兰10mA,Rs兰 2o⒑ lin☆ MC74HC4851A MC74HC4852A MC74HC4853A 1100 1000 C +25° C Oz<卜 Oz<卜 +125° C ⌒ 凵 ωΣΙ0ˇ 一 ωΣ 工0一凵 -55° 900 800 700 匡 ∝ c。 z0.c° z0〓 ∞一 ∞凵∝ ∞一 ω凵∝ 600 500 400 300 200 100 0 0,0 vin,|NP∪ T 1,2 18 2.4 ∨in,|NPUT vOLTAGE(VOLTS),REFERENCED TO GND vOLTAGE(VOLTs),REFERENCED TO GND Figure7。 Typical on Resistance Vcc〓 06 Figure8。 Typ:cal on ResistanCe Vcc=3V 2V 「 ˉ 丨 T+ 注 涟 贮 汇 贮 敝 ∵ 岭 贮 液 叮 廾吁 ・ ・ J 1111 __|__ˉ L~ J Oz<卜 ~川 ~~~ 一 ωΣ 工○ 一凵 △ 之-← > -55° C +25° C 亠 ...艹 z0〓 3oo卜 ω一 ∞凵∝ J~刂 过 ∝ L c° 二 二 刂 oL~.⑾ =车 △1J1 VinJNPUT VOLTAGE(VOLTs),REFERENCED TO GND Figure9。 Typ∶ cal on Resistance Vcc〓 4.5V -55° C +25° C +125° C +125° C Vin,|NPUT VOLTAGE(∨ oLTS),REFERENCED TO GND Figure10。 TypicaI0n Res∶ stance Vcc〓 6V MOTOROLA MC74HC4851A MC74HC4852A MC74HC4853A ˉin_ vin2(vsS OrvCC(vin2 Any Disab|ed Channe| vSS(vin1(vCC Enab|ed Channe| V。 ut=Vin1± vΔ out Figure11。 Iniection Current Coup"ng specification vCC vCC HC4051 micr° c° ntro"er Channe|1 Channe|2 Channe|3 Channe|4 Channe|5 Channe|6 Channe|7 Channe|8 CommOn Oul Figure12。 ^ctuaI Requires32passive components andTechnoIogy one extra6V regu丨 to suppress injection currentinto a standard HC4051 ator 【 ηultip|exer vCC vCC HC4Bs1A ⅢicrocontroⅡ Channe|1 Channe丨 2 Channe|3 Channe|4 Channe|5 Channe|6 Channe|7 Channe|8 COmmOn Oul Figure13。 mc74Hc0g51^solution solution by app丨 ying the HC485丬 M0TOR0LA A mu"ip|exer er MC74HC4851A MC74HC4852A MC74HC4853A E vE vC C Figure15。 Ⅲaximum off ChanneI Leakage Current, Any one ChanneI,Test set-up Figure14.On Resistance Test set~up vEE E C vEvC vCC Figure17.maximum On ChanneI Leakage Current, ChanneIto ChanneI,Test set-up Figure16.MaXimuJη 0彳 Chan"eI Leakage Current, Common ChamneI,Test set-up vCC CHANNEL sELECT GND CL★ tPLH ANALOG oUT ★ 丨 nc丨 udes a"probe andj丨 g capacitance Figure18。 Propagation Delays,ChanneI seIect to AnaIog out Figure19.Propagation DeIay,Test set-Up ChanneI seleot to^冂 al0g out MOTOROLA MC74HC4851A MC74HC4852A MC74HC4853A ANALOG |N tPLH ANALOG 0UT ★ lnc丨 udes a"probe and jig capacitance F∶ Figure21。 Propagation Delay,Test set-up gure20,Propagation DeIays,Analog In to AnaIog out AnaIog In to^naIog out ⊙ ⊙ vCC 叫⒐∵ GND tPzL POs丨 T|oN1、 ″HEN TEsT|NG tPHz AND tPzH 丁 POs丨 TlON2WHEN TEsT|NG tPLz AND tPzL vCC H|GH ANALOG Vo 丨 MPEDANCE 工∵ vOL vOH H|GH |MPEDANCE Figure23.Propagation DeIay,Test set-up Figure22.Propagation Delays,EnabIe to Enable to AnaIog0ut Analog out CHANNEL SELECT Figure24.POwer Dissipation Capac⒒ ance, Test se卜 up MOTOROLA MC74HC4851A MC74HC4852A MC74HC4853A Gate〓 Dlsab丨 ed Vcc Ana|Og Mux lnput CommOn Analog output Vin>Vcc+0.7v vOut>vCC Figure25。 DiagraJn of BipoIar CoupⅡ ng mechanism Appears盯 Vin exCeeds Vcc,dHving injecuon current into the substrate Xo X1 趁 X3 X4 X5 X6 X7 X Figure26。 Func】 on D∶ agra"l,HC4851^ MOTOROLA MC74HC4851A MC74HC4852A MC74HC4853A Xo X1 Ⅻ X3 X Υ0 Y1 Υ2 Y3 Y Figure27.Function Diagrarn,HC4852A X1 X0 X Y1 Υ2 Υ Z1 z0 z Figure28.Functiom Diagra冂 9,HC4853^ MOTOROLA MC74HC4851A MC74HC4852A MC74HC4853A ouTLINE DlmENslONs N suFFIx PLAsTlC PACKAGE CAsE648-08 NOTEs∶ 1 oNlNG AND TOLER^NC丨 NG PER ANsl Y145M,1gg2 D丨 MENs丨 2 CONTROL凵 NG D丨 MENsl0N∶ 丨 NCH 3 DlMENs丨 0N LTO CENTER0FL队 Ds WHEN F0RME0PARALLEL 4 DlMENsl0N8D0Es N0TlNCLVDE M0LD FLAsH 5 R0VNDED C0RNERs0Pη 0NAL lssUE R ⅢIⅡ F o740 "nx o145 o270 o175 o015 o00o o1∞ BsC o050BsC 27BsC J o110 L D suFFIx PLAsT丨 Cs0丨 C PACKAGE CAsE751B-05 D|MENs丨 lssUE J oNlNG AND TOLERANC|NG PER ANs| Y145M,1982 C0NTROLL|NG DlMENsl0N∶ MlLuMETER DlMENsl0Ns A AND B D0N0tlNCLVDE M0LD PR0TRVs丨 0N MAⅪ MVM M0LD PR0TRVs丨 0NO15(0,∞ 6) PER s|DE P8PL o,25001⑵ ⑩ |B⑩ DlMENs丨 0NDD0Es N0△ 1NCLUDE DAMBAR 0N ALL0WABLE0AMBAR PR0TRVs丨 PROTRVsl0N sHA吐 BE O127lO00sl TotAL 丨 N EXCEss OF THE D D|MENsiON AT MAX丨 MVM MATERIAL C0ND丨 T|0N ⅡFTERs "lL凵 "nx 10∞ 盯 sEABNC P1^NE JL D16PL o150 4∞ 轩受 o Os0 o35 0,009 F 127BsC o050BsC o009 J ◇ |0,zs⒃ ,01⑴ ⑩ |T|B⑨ |A③ o393 o157 o068 o019 o25 o010 o so DW sUFF∶ X PLAsTlC s0丨 C PACKAGE CAsE751G-02 丨 ssUE A N0TEs∶ 1 DlMENsl0NING AND t0LERANClNG ◇|0.010β asl① |B① PER ANslY丬 4,5M,1982 2 C0NTR0L凵 NG DlMENslON∶ M丨 L凵 MEtε R 3 DlMENslONs A AND B D0N0T|NCLUDE M0LD PR0TRUsl0N 4 MAXIMVM M0LD PR0TRVslON O15lO0o6)PER s丨 DE 5 D|MENs!oND D0Es N0T|NCLVDE DAMBAR PR0TRVsl0N ALL0WABLE DAMBAR ‘ PR0TRUslON sHALL Bε 013lO005)T0tAL丨 N 彳 ◇|0,010⒑ 2⑴ ①|T|A⑤ |B③ EXCε ss OF D D|MENs丨 0N MATER丨 AL0oNDlTl0N 凵 "l凵 "Ⅲ Rs AT M^XlMVM I"C"Es "nX "AX 1045 70o 2s5 o Os5 o OsO BsC o010 o000 △NE o012 o∞ g o Ozg 、 M0T0ROLA MC74HC4851A MC74HC4852A MC74HC4853A ouTLINE DlMENsIONs DT suFFIx PLAsT|C Tss○ P PACKAGE CAsE948F-01 丨 ssUE○ 16X K REF NOTEs∶ 囤上 1 D MENs{0NlNG AND T0Lε RANC{NG PER ANs| Y145M,1982 2 C0NTR0LuNG D|MENs|oN∶ M|LuMETER 3 D丨 MENs|oN A DOEs N0T|NCLVDE M0LD FLAsH PROTRUsl0Ns0R GATE BVRRs M0LD FLAsH0R GATE BURRs sHALL N0T EXCEED O15lO006)PER slDE 日 —— 4 DlMENs|0NBD0Es N0T|NCLUDE|NTERLEAD F△ AsH0R PROTRUslON|NTERLEAD FLAsH0R PROTRUs|0N sHALL N0T EXCEED ~ DE DlMENs|0N κ DOEs N0T|NCLVDE DAMBAR o25(0010)PER s丨 PIN1 PR0TRUs0N ALL0WABLE DAMBAR PR0TRUslON lDENT sHALL BE O OB(0003)T0TAL|N EXCEss0FTHE κ D|MENs ON AT MAⅪ MVM MATERlAL COND|T丨 0N TERM|NAL NUMBERs ARE sHOWN F0R REFERENCE0NLY D|MENs0N A AND BARET0BE DETERM|NED AT DATUM PLANE-WINCHEs "lLL!"EtERs o047 o020 o65BsC o026BsC o007 o004 o25 640BsC o252BsC 8 咖 a reserv蛐 e nghtto make ch⒆ 跏 fudher n岫 to any pr。 ducts h骊 咖 漉 makes no warran.墨 the suItabiI"γ of"s produCts for any padicu丨 ar purpose,nor does MOtoroIa assume any"ab""y aosing out speCi们 Ca"y disclaI了 ns any and a"Ⅱ abiIⅢ,lncIuding vvithoutⅡ mitation consequentiaI Orincidental damages,“ ofthe appⅡ catio TypIcaI” ρ aramet 潲 糨 : data sheets and/orspecifications can and dovaryin differentappⅡ cations and actuaIperformance rnayvaryovertime。 All operating parameters,including“ tˇ picals” must be valldated for eac"customer appⅡ cation by customer’ s teChnica丨 expeds. MOtorola does not convey any Ⅱ Cense under"s patent rights northe"ghts of others, MotoroIa products are not designed,intended,or authorized for use as components in systems intended for surgicalirnpIant into the body,or other appⅡ cationsintended to suppod or sustaIn"fe,orfor any other app"cation in which the fa"ure ofthe MOtorOIa productcould Create a s"uaⅡ on where persona"njuγ ordeathrnayoccur shouldBuyerpurchaseoruseMotorolaproductsforanysuchunintendedorunauthorizedaρ pllca刂 on,8uyersha"indemn"ˇ and h° Id MOtorola iCers,employees,subsid|aries:a钌 iIiates,and dIstr|butors haΠ n丨 ess against a"claI了 ns,Costs,damages,and expenses,and reasonabIe auomey fees a"sing out of,direcuy or indireCtIy,any c丨 airn of personalinjury or death associated W"h such unintended or unauthonzed use,even if such cIairn a"eges that MOtoroIa was negl丨 gentregarding the deogn or manufactuFe o"he pa吐 MOtorolaandO are registeredtrademarksofMOtorola,Inc,MOtorOIa,Inc.is an Equal and its o钌 0ppOHunity/A仟 inη a】 ˇ e AcⅡ on Employer. Mfax is a trademark of MOtorola,lnC. HoW to r● aCh us: Us^`EuROPE`L° cations NOt L∶ sted∶ MOtorOIa Literature D∶ st"buton; RO BOX5405,DenVe1COIOrado80217.303冖 675-2140or1-800¨ 441-2447 m忆 xiM∶ RMFAXO@em硎 .sps.mot.com-TOUCHTONE sO2叫 l"TERNET h‖ 2△仁6∞ 9 -Us&Canada(DNLY1-800-774-1848 p∶ sPD,smtegt Plan雨 ng of℃ e,oq~1, Nishi GOtanda,shinagawa-ku,tokyo141,Japan. 81夺 5487-8488 J^n^N∶ Nippon MOtorola Ltd∶ C∶ MOtorola sem℃ ond∞ tors H.κ .Ltd.;8B1钿 Ping hdus"al Park, ^s:^`PACF∶ 51π ng κok ROad,Tai Po,N。 T,HOng κ°ng. 852叫 2ss29298 〃motorda。 com/sps ⊙ …TOROL^ ◇ aPHx∞ 。i仁 1P刚 NTEDlN UsA引 妍 lMPE曰ALL「 H0⒛ 〃 θ 2,000uTLOGc ⅢC74HC0851A/D