USB2.0设备速度的识别

时间： 2024-07-05 来源：步步精科技官网

技术问答

选型帮助

研发客服

商务客服

USB2.0是采用在D+和D-信号线上增加上拉电阻的方法来识别低速和全速设备。

主要防水有以下三种：

1.低速USB设备的D-信号线上连有1.5kΩ的上拉电阻接至3.0~3.6V电压。

2.全速USB设备的D+信号线上连有1.5kQ的上拉电阻接至3.0~3.6V 电压。

3.主机或者集线器的下行端口的D+和D-信号线上都连有15kΩ的下拉电阻到地。

图 1

当控制器或集线器的下行端口没有与USB2.0设备连接时，其D+和D-信号线上的下拉电阻使得这两条数据线的电压都是低电平：当低速/全速设备连接USB设备以后，在D-或者D+信号线上会出现大小为15/ (15+1.5)*Vcc的电压，而D+/D-信号线上仍然保持低电平。如果这种状态持续2.5μs以上，USB2.0主机就会认为一个低速/全速设备已经连接成功。

USB2.0高速设备识别：高速设备在连接起始时以全速速率与主机进行通信，以完成其配置操作，这时候需要在D+信号线上把1.5kΩ的上拉电阻接至3.0~3.6V电压。当USB2.0高速设备正常工作时，如果采用高速传输，D+信号线不需要上拉；如果采用全速传输，则D+信号线必须使用上拉电阻。

所以，为识别出USB2.0设备的速度属性，需要在上拉电阻和D+信号线之间连接一个由软件控制的开关（也称为软连接功能)，目前大部分的恩智浦微控制器的USB2.0外设内部已经集成了这个功能。用户只需要控制寄存器即可，无须增加额外的外部控制电路。

图 2

发送到邮箱 |
+1 赞 0
收藏
评论 0
| 转发至：

本文由三年不鸣转载自步步精科技官网，原文标题为:USB2.0设备速度的识别，本站所有转载文章系出于传递更多信息之目的，且明确注明来源，不希望被转载的媒体或个人可与我们联系，我们将立即进行删除处理。

全部评论（0）

暂无评论

浅谈USB2.0的电压和电流

USB有一个很好的特性，就是USB设备可以从USB总线上取得电源，这也是USB充电的基础。USB2.0规范中定义的供电电压范围为4.4V到5.25V，更大供电电流为500mA。从电源角度可以将USB设备分为自供电和总线供电两种设备类型，自供电USB设备不需要使用USB主机或集线器的电源，自身有电源供应；总线供电指USB设备的电源来自US 电缆中VBUS线。

技术探讨发布时间 : 2024-07-03

【技术】一文带你了解贴片轻触开关的结构及工作原理

贴片轻触开关根据设计原理的不同，主要分为以下两种。一种是利用开关内部的金属弹片来实现开关的通断，这种开关的手感相对来说就非常好，因为是金属材质设计，按下开关按钮到一定程度的时候，会出现滴答的声音，这种反馈非常好，现在很多手机在设计时就借鉴了这种原理，如虚拟按键，为了使其具有与实体按键一样的手感，会设计各种振动和声音来营造一种与实体按键一样的感觉。

技术探讨发布时间 : 2021-07-21

贴片轻触开关的结构及原理

贴片轻触开关的主要特点其实就是经过再流焊接后能进行清洗，并在接触转换的结构上可以配置各种形状的轻触按键。此类开关的底座一般都是采用高耐热性的树脂进行制作，并会在底座上嵌入一对固定接触片，分别是接触片1和接触片2。

技术探讨发布时间 : 2024-04-18

Littelfuse（力特）电路保护产品选型指南

目录- Company profile Circuit Protection Technologies Overcurrent/Overvoltage Protection device ESD Suppression Solutions Overcurrent Protection/Overvoltage Protection Applications Common Circuit Threatsand Protection Solutions Fuses Fuse Holders PPTC Devices Varistors Gas Discharge Tubes ESD Suppressors TVS Diode Arrays Protection Ics TVS Diodes PLED Bypass Protectors SIDACtor® Protection Thyristors Circuit Breakers

型号- PXXX0SAMC,LS2406ERQ23,1812L,LVR,SPHV,30KPA-HR,456SE,456SD,15KPA,345 SERIES,ITV9550 30A,AQ24CANFD,SDP,AC,RUEF110S,LS2406ERQ33,PXXX2AC,MICROSMDCH,562 SERIES,AQ1003-01ETG,SDPXXX0T023G5,150603,800,801,802,804,806,807,BA,808,BB,PGB2,PGB1,P4SMA,TSM600,PTF070,MICROASMD,SC1103C-01UTG,PTF078,PTF077,LS0504EVT233,PTF075,AQXXC-01LTG,810,811,356 SERIES,5KP,813,FB65,814,FB66,CA,CG,CH,PTF080,286677,PICOASMDCH,PXXX2AX,MINIASMDC,SMF4L,121004,B61089BDR,282008,121001,282007,820,121003,AK10-Y,821,121002,282002,823,824,282001,FB55,DA,828,DB,FB58,NANOASMDCH,820-20,830,831,834,835,TP5KP,101001,3453,3452,605,606,RKEF,607,PXXX2ACMC,LS12052BD33,AGRF,PTF0080M,B61089QDR,RUEF135V,850,851,852,3455,853,AHEF100,60R,617,618,GTCX36-XXXM-R05,PXXX0Q12X,860,862,HA,HB34,GTCX36-XXXM-R10,2920L,SP8008,AQ4337-01ETG,155 SERIES,P6SMB,803-01 SERIES,SLD,810 SERIES,870,PTF015,874,875,876,342 SERIES,877,5.0SMDJXXS-HRA,348 SERIES,30KPA,SM7,SM24CANB,SMCG-HR,TSV250,FC09B1606NL-0,SMD,SMF,TPSMB-VR,881,35408 SERIES,OMN002,400,OMN004,885,35406 SERIES,881 SERIES,OMN006,646,405,647,V20H275AUTO,407,649,RXEF,101010,52100001009,AQ24CANA,AQHVXX-01LTG,656,101002,PXXXXDF,658,101003,5KPA-HR,824-20 SERIES,5.0SMDJ,570 SERIES,AQ3530-01FTG,B-SERIES,662,663,422,664,665,LA,SMBLCE-HR,L-SERIES,AQHVXX-01LTG-C,PTF050,SC1105-01UTG,PTF055,G-SERIES,435,437,438,A-SERIES,870 SERIES,PTF065,440,RGEF,437A,441,SP1103C,443,202,203,254 121,445,446,688,447,3453 SERIES,448,449,208,209,TR600,04450001,PTF030,438A,451,SRP,452,453,454,TSM250,PTF035,213,456,215,821 SERIES,458,216,LV ULTRAMOV,459,217,218,SP3401,SP3400,AQ3522-01FTG,TPSMC,FHN26G2,TPSMB,PTF040,TPSMD,LS2405IDD23,PTF045,460,461,5KPA-HRA,462,220,464,465,466,224,467,225,576 SERIES,468,254 101,229,BXXX0CX,SL0902A,102080,470,BXXX1UX,471,472,230,473,232,233,501A,476,234,235,477,MIDSMD,PXXX4UCMC,239,MHS,850 SERIES,813 SERIES,AQ1205-01ETG,483,RA,485,487,802 SERIES,259UL913,ITV4030 22A,SM20,345121,102064,254 201 - 208,251,494,PLEDXUX,253,SD,SE,SG,SH,259,4.0SMDJ,SL1002A,SM,15KPA-HRA,15KPA-HR,GTCX37-XXXM-R10,102074,102076,102079,102078,NANOSMDCH,GTCA28-XXXM-R03,NY61AP,262,102071,263,265,266,3.0SMC,267,DSLP,268,269,LOW RHOPTC,520 002,520 003,520 004,SL1003A,520 005,1KSMB,345101,MLA,LS24062RQ23,1210L,AQ36CANA-02HTG,445073,MLE,MHP-TAM15,272,273,MLN,M-SERIES,274,E-SERIES,275,278,279,AQ3102-02HTG,MHP-TAC6,803-01,MHP-TA,285,AQ3041,SMBLCE-HRA,PLEDXUSXA,SP4322-01ETG,AQ3045,TP1.5KE,SP4208,SC1205-01ETG,820-20 SERIES,354 SERIES,CG33.0L,SP11XX,359 SERIES,MS-SERIES,111 SERIES,100 SERIES,NANOSMDC,346877,PICOASMDCH010F-2,340 SERIES,AHRF300,AHEF,342025,342024,342021,ZA,AQ3400,XGD,FH604,AQ1250-01ETG,PXXX3ACMC,FH602,PXXX6U,SP4010,342006,PLEDXN,SZD200,HG34,PLEDXS-A,J-SERIES,824 SERIES,FEMTOASMDC,ITV5432 30A,AK6-Y,557 SERIES,SL1021A,SL1021B,SP4020,SP4022,SP4021,SMDCH,SP4024,281010,SP4023,PLED,MINISMDC,AXXXXUX6,254 011 - 008,SMTAK3,PXXX0Q22XLH,MHP-TAM6,AK15,445005,281007,154T,281008,281005,AK10,AQ1005,51800001009,PXXXXS4X,ITMOV,354701 SERIES,483A,445004,LS05006VPQ33,SP4044,BXXX1UC4,SP4045,5200001,SMBJ,AQXX-01LTG,AQ7538-08UTG,SP1064E-04UTG,TCF250,SMTOAK2,SMAJ,AQ7520-08UTG,PXXX3AX,NANOASMDC,461E,811 SERIES,800 SERIES,157T,FC51,PXXX1U,PXXX1S,TRF250,SMBJ-HRA,SMDJ,CG3,SP3384NUTG,CG2,CG5,CG4,2205,CG7,B3XX4UX,CG6,VLP,VLR,0603L,PLEDXUX-A,SMCJ,PICOASMDC,LS0504EDD12,SMD2,PXXX0Q22C,GTCX35-XXXM-R05,SMDJ-HR,SMDC,TMOV34S,AHRF,440A,AXGD10603NR,K-SERIES,TPSMC-VR,H-SERIES,SZ1SMB,SZ1SMC,SZ1SMA,219XA,AK20-Y,ITV9550L2030MR,441A,SZ1.5SMC,SP1250-01ETG,C-SERIES,SC1210-01ETG,TB-SERIES,0402L,ITV9550 45A,AHRL,DHB34,FHN26W,AUML,TP6KE,LTKAK3,AQRV05-4HTG,LTKAK2,72R,977,TLP,LTKAK6,AQ15CANA-02HTG,PXXX3AC,SP3205-01ETG,501,3452 SERIES,504,505,506,507,GTCX23-XXXM-R01,508,8.0SMDJ,PXXX3U,100060,100061,100062,122090,100063,100064,100065,PXXX0SX,100066,SC1533-01LTG,SPHV-C,AHS,122093,150318,TS600,150319,150316,150317,150315,AQ3102-02JTG,150312,513,514,100058,100059,2016L,286377,122088,122087,559 SERIES,122083,GTCX26-XXXM-R05,521,523,AK15-Y,100067,526,150322,527,PXXX2SXLH,SL1411A,AK1,AK3,AK6,VTP,422A,SMCJ-HRA,ASMD,C-III,SR70,0805L,860 SERIES,RHEF,SMF3.3,303,304,305,308,35409,35408,35407,35406,TPSMA6L,PXXX2SX,SP724,SP725,SC1115-01UTG,TSL250,LOW RHO,HMOV,SP723,SP720,SP721,312,313,30R,314,556,315,557,559,318,SLD6S,SP1305,SP712,560,562,322,564,324,325,326,328,SLD5S,CX-SERIES,570,571,332,SLD8S,PXXX0SD,576,TRF600,PICOSMDC,3.0SMCJ,SZSMF,LS1205EVD33,SP1326,AQ12CANA-02HTG,340,150307,100,342,FHN20G,344,345,35407 SERIES,348,SMAJ-HRA,150300,AUMOV,LTKAK10,445 SERIES,SC1333-01ETG,RUEF,GTCX25-XXXM-R02,GTCX25-XXXM-R05,LS0502SCD33,111,354,356,52000001009,359,824-20,SP3420,150274,RUSBF,SP1003,SP3422,PXXX0ME,564 SERIES,SP2555NUTG,51900001009,10207101009,520 101,369,SL1122A,571 SERIES,SP1233,AQ2555NUTG,SP1255P,600R,PXXX4UX,WB07B0606LG,370,372,1.5SMC,TLPA,373,1.5SMB,374,SZSMF4L,377,820 SERIES,254 131,PXXX1CX2,SEPXXXXQ38,00300210,SZW200,TP5.0SMDJ,523 SERIES,SP1005,SP1006,CG32.0L,382,AQ1205-01FTG,383,385,35409 SERIES,407A,V14H460AUTO,SMA6L,391,392,CG32.5L,N-SERIES,SMA6J,395,3425L,F-SERIES,154,396,397,398,157,399,159,SC1122-01UT

选型指南 - LITTELFUSE - v0420 - 0420 PDF 英文下载

步步精圆满收官深圳国际连接器、线缆线束及加工设备展，展示了消费电子、汽车等领域的全面连接器解决方案

2024年8月28日至30日，深圳国际连接器、线缆线束及加工设备展成功落幕。步步精科技在本次展会上取得了显著的进展，作为连接器行业的重要制造商，展示了面向消费电子、工业设备、工业机械、能源、医疗电子、智能家居、汽车等领域的全面连接器解决方案，充分展示了其产品的多样性和技术领先性。

原厂动态发布时间 : 2024-09-09

Company Introduction

型号- BSS169,USMS05,SD103AW,DTD113Z,P1583,P1580,LR9284,FR107G,LR9282,UR78XX,TIP102,LR9280,LV358,SXXXX,UM605A,UM605B,LR3865,2SC4467,XC61CN,XN65,UM603A,MMBT2222,UD38501,IPI90R500C3,XN60,LR1107E,U74LVX4053,F3N70,TVS4S009,LM317,UD24121,LM318,UF630,R5323,BAT54TS,UCD4066,SK-SERIES,40NM80-Q,TLVH431,BAS70AW,TIP112,UCL-SERIES,BTB312,LD1117,LD1596,BAT54TB,2SC5200,UM604A,F21NM70,LL431,UFR8060C,PCR406,UM602A,SOT05C,2SA1694,BAT54SW,BAT54ATB,UESDA6V1W5,SMDJ,UF50N20,TIP35C,LR1108E,UF601,SMCJXXX,UF600,BAS70C,BAS70A,75185,ZXMHC10A07N8,UR77XX,U74LVC2G240,UH8100X,TIP122,U74LVC2G241,BTA312,75NM70,DTC143X,LR3965,UM601A,U74AUC1G126,DTC- SERIES,USB4S012,UCD40XX,U74LVC2G132,BAS70W,40-SERIES,LR9153,UR5596,UF601Q,75NM65,78R05,UPRTR5V0U4D,XN80,SD103AWS,BAS70S,MBR20150C,75NM60,UCC SERIES,2SD1804,URCZ1284-XX,LR1118,U74CBT,LP2950,U74AUC1G86,TXXXX,SB10100,MGBR40V300C,8N150,U74AHCTXXX,78-SERIES,UR6512,UFR75120,UR57XX,UD9926,F30NM60,UIC809,LADLD10,15N20,LM78XX,LM358,LR3XXYYB,RB521S30,13NM90,LMV331,LADLD SERIES,UF830,88CXX,TMBS,F2N60,U74HCT73,CR03AM,MBR-SERIES,FDS9926A,TGBR10V200,60NM50,BAT54CTB,UM606D,LM321,BAV199W,UTRS458,SR26,LM324,SR24,RB520S30,LM317A,1NNPP10,DTC123J,LR91XX,P1484,UZ5C056,89CXX,HE8050,5N80-FCQ,UR56XX,TL431,UM607D,UD36241,LM79XXA,UM607B,78DXX,MC4580,DTC124E,LR1108,UIC813,UIC812,LR1106,UIC811,UTT220N03,UC3206,RB520S40,UR6517,LM339,U74LVC,LR1101,BU931,P1595,P1596,BAT54STB,SMDJXXX,U74LVX,MBR10100,U74HCT138,L1806,LR2128,LR2125,MJE3055T,79LXX,75323,DTA144E,LR1122D,2NM65,1SS400,BAV70S,10N70-ML,81NXX,2N7002K,BAV70W,10N70-MH,BAV70T,U74LVC1G125,MBR20100C,UD32121,UMX4215,BAT54S,US650,MMBD4148CA,MMBD4148CC,U74AUP1G74,DTB123Y,P3596,U74LVC02A,BAT54C,BAT54A,MGBR60V200C,BAT721C,LM393,SK1816,BAT721A,U74LVC373,MGBR20L300C,2SC5027,U74LVC258,UR5517,LR1012,TL072,40- SERIES,U584,SK1901,TMBS SERIES,UTRS485,ULN2803,ULN2804,UF9640,75232,2N7002Z,LMV393,SK8552,UCD4011B,BAT64A,TGBR40U100C,USG135N10,U74AHC164,BAS316,1N4148,BTA312A,BSS127,BSS123,LR6401,74-SERIES,USG80N10,U74AHCT86,U74AHC374,TDA2030A,UT4101,UH8102A-X,9N120,IRF9640,RB501-V40,ULV8542,74AUP1G04,U74AUP1G32,UCD4001B,UP1620,TGBR20U100C,UTT80N10H,UT7500,82NXX,4N65-TC3,UT10XX,RHRG75120,BYC20,TGBR40V100C,78D12,U7SB3157,TYN840,DTA114E,BAT42VS,BAT54WS,MCR100,ULC831,74LVX4051,317- SERIES,L11831,2SD965,MMBT,U74AHC595,BAT54W,UH8102B-X,USG170N10,TGBR20L100,DTA114W,U74AUP1T157,UT3232,UH8106-X,U74AHC,UMX2215,XN100,U74CBT3306,P6KE,ML1225,DTA- SERIES,UCD4015B,BAS70CW,U74AUP1G02,BSS84ZT,U74AUP1G00,U74AUP1G06,SMDJXXXX,U74AUP1G04,TGBR30S150C,UT3243,LM2940,4051,BAS70SW,U74CBTLV3125,4052,P34563,UC3816,79L05,BAS70,NTR4101P,TPD4S009,MBR10100C,SD106WS,8NM80,MGBR30V300C,BAT54DW,UD0512X,89NXX,BAT54ADW,UC3826,BSS84Z,TGBR,MN2488,U74AHC21,62783,UCR316CM,62784,AO3419,MMBT1815,4P50,C6084,BAS85,1SS133,MGBR60L100C,BAT54CW,ADLD70,USG50N12,MC34119,U74LVCXXX,CD40- SERIES,P1484A,UT3223,UT3222,UT3221,UR133,UZ18C6V8,UF3205,UTT50N06,MAC97A,2SD882,UC3916,FQP10N80C,UHS41,UCD4050B,MJE13001,MJE13003,UMR11N,MJE13005,MJE13007,MJE13009,US112,74LVC373,12P10,82CXX,U74AHC1G09,BAT54AW,U74AHCT32,1SS355,UD0525X,P1482A,BAV23S,BAW56W,SK1816M,83CXX,AP6401,USG60N10,U74AHCT,MMBT3904,BAT54SDW,BAV23C,UR72XX,BAV23A,BAT54,2SD669,BAV99,SMA5V,STD7NM64N,BAT54CDW,NCP702XX,LR1801,7NM70,LR1802,U74CBT1G384,U74LVC1G99,U74LVC2G66,1SS184,U74CBTLV,UT3419,UT232A,MMBD6100,UWD706,U74LVC1G97,UT232E,SK1816A,BAS40,4N150,UTC4013,LR1805,MMBTA06,BU4209,SK24,U74LVC573,U74LVC574,UWD817,UH8104,UH8105,S8050,79- SERIES,BAT54TDW,BAV70,UTRS3082,UTRS3080,UH8103,MMBD4148,12N80-FC,BAV20W,M2125,UTRS3088,UPC10XX,UTRS3085,UR71XX,2SA1943,UCSR3652S,78LXX,LR9500,BAS21,U74AUP1GXX,SMAJXXXX,UR76XX1,HT75XX,MGBR20V100C,SB-SERIES,X0202A,MN2510,UC3656,89N09,UM6K1N,MMBD7000,SBR SERIES,U74LVC2G32,U74LVC1G58,UD36061,MMBTA44,UC3666,UCSR3654S,LR1965,U74LVC1G57,BUXXTD,LR9203,XNM90,X0202,BT151,ULD2003,LM78XXA,2N7002,U74AUP,UC3879,U74- SERIES,ES1J,MC34074,MGBR,MC34072,U74AUPXXX,SMAJXXX,BSS84,BAW56,BTA12,UC3873,ULN2003,MAX809,ULN2004,MMBD4148SE,UD0530X,82XX,S-809,9013,LADLD70,UC38XX,XL1225,LADLD,SR-SERIES,78RXX,UC34163,UCC,CD4000,U74AUC,UCS1655S,MMBT5551,U74AUC1G08,SN74AHCT86,UT136,LM7912,N7000,LV2461,UT131,LV2460,LR2965,XNM65,CCVGA7C9,N7002,LR9113,U74AUC1G02,XNM60,CCVGA7C5,15NM70-U2,U74LVC1G19,UFR SERIES,SR2803,UR76XX,ULVH431,UZ1084,UD0520X,LM7805,LM393 SERIES,81XX,BSS139Z,UC3863,SRV05-4,U74LVC1G10,USG40N10,US5C3257,UR6223,UR6225,VGA7S019,UCD4081B,U74LVC86A,UN2488,78- SERIES,UD18203,MXXXX,UT71XX,LV324,LV321,LMH358,UPC817,81CXX,UPC816,MAX485 SP232A,XNM80,LR9101,CD4052,UR75XX,UCD4070B,RB751V40,SMBJXXX,BZA100,ULC393,UCD40106B,UD0510X,UFR,88NXX,BAV199,P6KEXXX,SBR,LM7824,TLV733XX,XN40,IRF3205,F4N60,LR9107,LR9102,IRFP22N60K,LR9103,UM603,LR18120,78L05,UM602,PUSB220,QS8M11,UCD4071B,UD4606,UM606,UM609,UM608,R1180X,LXXLD30,4N65-ML,UD38252

商品及供应商介绍 - UTC - Jul. 2022 PDF 英文下载

沁恒（WCH）通讯接口芯片和全栈MCU选型指南

描述- 南京沁恒微电子股份有限公司专注于连接技术和微处理器内核研究,是一家基于自研专业接口IP、微处理器内核IP构建芯片的集成电路设计企业。公司致力于为客户提供万物互联、上下互通的芯片及解决方案，主要产品包括USB/蓝牙/以太网接口芯片和连接型/互联型/无线型MCU，产品侧重于连接联网和控制。

型号- CH24X,CH233P,CH36X,CH32X035F8U6,CH32X035G8R6,CH32V103C6T6,CH32F205RBT6,CH370,CH372,CH251,CH343G,CH374,CH132,CH253,CH252,CH376,CH343K,CH375,CH254,CH32V006F8P6,CH378,CH377,CH440G,CH32X035,CH25X,CH32V208WBU6,CH583M,CH341T,CH32V003J4M6,CH32F103C6T6,CH233A,CH342F,CH382,CH32V006E8R6,CH384,CH342K,CH233K,CH37X,CH9374B,CH237,CH236,CH58X,CH32F103C8U6,CH340K,CH231K,CH22X,CH238,CH34X,CH340N,CH582M,CH340T,NET-SER-DT TTL,CH341B,CH341A,CH592,CH341F,CH591,CH231,CH486F,CH230,CH233,CH235,CH35X,CH32X035F7P6,CH368,CH484M,CH230K,CH23X,CH231A,CH32V203G6U6,CH340E,CH582F,CH482,CH481,CH340C,CH484,CH340B,CH483,CH365,CH486,CH364,CH340G,CH246,CH367,CH59X,CH4XX,CH366,CH578,CH334R,CH457,CH577,CH32V303VCT6,CH335,CH334Q,CH456,CH334P,CH338,CH579,CH32V,CH56X,CH334U,CH339,CH32X,CH564Q,CH334S,CH32V003A4M6,CH32X033F8P6,CH32F,CH335F,CH347F,CH32M,CH335J,CH32L,CH565M,CH451,CH571,CH450,CH444G,CH238P,CH453,CH573,CH452,CH334,CH455,CH454,CH347,CH226,CH57X,CH225,CH348,CH32X035G8U6,CH237D,CH9342G,CH334F,CH581,CH583,CH564L,CH334H,CH341,CH220,CH462,CH582,CH32F208WBU6,CH340,CH32X035R8T6,CH564F,CH343,CH342,CH221,CH463,CH334L,CH345,CH224,CH443K,CH344,CH223,CH344Q,CH555,CH557,CH315,CH318,CH54X,CH559,CH317,CH438,NET-485-9120,CH235S,CH32V002系列,CH32M007,CH236D,CH442E,CH552,CH551,CH554,CH432,CH567,CH343P,CH446,CH445,CH569,CH55X,CH448,CH568,CH440R,CH31X,CH449,CH440P,CH9340K,CH9340C,CH32F207VCT6,CH561,CH440,CH563,CH442,CH344L,CH565,CH323,CH444,CH564,CH443,CH412,CH64X,CH338X,CH52X,CH32V103R8T6,CH448F,CH32V203F8U6,CH9103M,CH32V203G8R6,CH532,CH531,CH545,CH423,CH547,CH546,CH446Q,CH53X,CH549,CH446X,CH548,CH32F103R8T6,BLE-DONGLE,CH338F,CH9104L,CH338L,CH541,CH543,CH422,CH32V003F4P6,CH9101Y,CH445P,CH9101N,CH9101R,CH9101U,CH9101H,CH32V307RCT6,CH347T,CH643,CH522,CH9102X,CH525,CH444P,CH645,CH524,CH527,CH528,CH565W,CH9344L,CH348L,BLE-SER-A-ANT,CH348Q,CH32V203F6P6,CH521,CH641,CH9102F,CH645W,CH32F203CBT6,CH32V006K8U6,CH32F207,CH32F205,CH32F203,CH32V003F4U6,CH32F208,CH645F,BLE2U-C-ANT,CH643U,CH643W,CH643Q,CH449X,CH32V303CBT6,CH32L103F8U6,CH32V305FBP6,CH569W,CH32F103,CH449F,CH32L103G8R6,CH643L,CH32X035系列,CH32F203C8T6,CH32V208RBT6,CH32V203系列,CH32V305RBT6,CH32V007系列,NET-232-9120,CH32V208GBU6,CH32L103F8P6,CH32V203C8T6,CH32V307,CH32V305,CH32F203C8U6,CH32V203C8U6,CH32V303,CH9160-DG-R0,BLE-TPT-A-ANT,CH32F203C6T6,BLE2U-A-ANT,CH9343,NET-TTL-9120,CH9328,CH9329,CH9326,CH9445,CH32L103C8T6,CH32F208RBT6,CH32F203VCT6,CH32V005F6U6,CH182H,CH182F,CH32V305GBU6,CH9434,CH32V203C6T6,CH32V307VCT6,CH181H,CH32L103系列,CH32V203F8P6,BLE-TPT-B-ANT,CH32V005D6U6,CH912X,CH32V303RCT6,CH32V005E6R6,CH32V003系列,CH32F203K8T6,NET-SER-DT RS232,CH9143,CH93XX,CH9140,CH9142,CH9141,CH9126,CH32V005F6P6,CH32F203RCT6,NET-SER-DT RS485,CH32L103,CH32V006,CH32V007,CH32V005,CH32V002,CH32V003,CH32X035C8T6,CH32V303RBT6,CH32V203K8T6,CH9121,CH9120,CH32V307WCU6,CH32V303系列,CH32F203RBT6,CH32V203RBT6,CH9350,CH483M,CH32V103C8T6,CH32V005系列,CH592X,CH483X,CH32M系列,CH230A,CH32V317,CH581F,CH32F103C8T6,CH32V103C8U6,CH482X,CH32L103K8U6,CH591R,CH32V208,CH182,CH592F,CH32V103系列,CH32V203,CH592D,CH32V208CBU6,CH914X,CH390,CH32V203K6T6,CH392,CH271,CH591D,CH482D,CH591F,CH275,CH395,CH397,CH38X,BLE232-NEP,CH32V006F8U6,CH32V103,CH39X,CH481D

选型指南 - 沁恒 - 2024/4/11 PDF 中文下载

四方杰芯高速、低功耗单刀双掷模拟开关FSW7227，具有30V过压保护功能，支持2.5V~5.5V供电

四方杰芯FSW7227是一款高速、低功耗单刀双掷（SPDT）模拟开关，具有30V过压保护功能，支持2.5V~5.5V供电。FSW7727设计用于在手持设备（如手机，数码相机，笔记本电脑，集线器或控制器）中切换高速USB2.0信号。

产品发布时间 : 2024-08-27

步步精科技始创于1987年，专注于连接器，开关，线束的集成化方案，拥有丰富的技术研发及先进设备，产品先后通过UL、VDE、CE、CB、CCC、CQC等安全认证，符合RoHS环保要求。公司严格按照：ISO9001:2000质量体系运行并建立了美国UL产品实验室。

TYPE-C母座 TYPE-C防水母座插座轻触开关按键开关船型开关检测开关连接器USB母座 USB接插座

授权代理商 - 深圳市世强元件网络有限公司线上商城技术资料

展开

114-271-140001-K8G AC插座+保险座+船型开关 F45-3+SW5(4) L=65.0 绿灯盒装

型号- 114-271-140001-K8G

产品图纸 - 步步精科技 - REV.: A0 - 2022/7/18 PDF 英文下载

微动开关的用途及其工作原理

本篇中步步精科技就微动开关的用途及工作原理展开描写。微动开关虽然看起来很小，但作用很大。可以说其在我们日常使用的电子产品中具有不可替代的作用，特别是在需要频繁进行换接电路的产品中作用更大，不但可以实现电子产品的自动控制，而且还可以实现对电子产品的安全保护。目前，微动开关已被广泛应用于电子产品、仪器仪表、家用电器等领域，同时在航天、航空、导弹等国防军事领域也有十分重要的应用。

原厂动态发布时间 : 2021-07-25

步步精科技诚邀您参与深圳国际连接器、线缆线束及加工设备展

2024年第14届深圳国际连接器、线缆线束及加工设备展览会将于2024年8月28-30日在深圳国际会展中心（宝安新馆）隆重举办。步步精科技将继续亮相此次展会，携带高端一体化连接器、外接口、内接口、开关、线束等系列创新产品，展示其在智能制造领域的卓越实力。

原厂动态发布时间 : 2024-08-16

步步精科技（BBJ）TYPE-C系列连接器选型指南

目录- TYPE-C系列连接器

型号- UC.01.31-11-0014,UC.01.31-11-0015,UC.01.41-1K-0002,UC.01.53-11-0003,UC.01.41-1K-0003,UC.01.53-11-0004,UC.01.41-1K-0001,UC.01.53-11-0002,UC.01.52-1L-0001,UC.01.52-1L-0003,UC.01.51-11-0003,UC.01.23-1B-0001,UC.01.32-1W-0010,UC.01.66-11-0002,UC.01.66-11-0001,UC.01.53-1B-0003,UC.01.53-11-0005,UC.01.11-1W-0001,UC.01.62-1W-0004,UC.01.62-1W-0003,UC.01.62-1W-0002,UC.01.62-1W-0001,UC.01.59-51-0001,UC.01.62-1W-0007,UC.01.51-11-0017,UC.01.62-1W-0006,UC.01.62-1W-0005,UC.01.51-11-0019,UC.01.51-11-0018,UC.01.52-1W-0008,UC.01.52-1W-0009,UC.01.52-1W-0006,UC.01.52-1W-0007,UC.01.52-1W-0004,UC.01.52-1W-0005,UC.01.33-11-0002,UC.01.51-1J-0002,UC.01.33-11-0001,UC.01.52-1W-0003,UC.01.62-1K-0002,UC.01.31-11-0008,UC.01.62-1K-0001,UC.01.31-11-0005,UC.01.31-11-0006,UC.01.44-4K-0001,UC.01.61-1K-0010,UC.01.72-4W-0002,UC.01.32-1G-0002,UC.01.53-11-0026,UC.01.53-1W-0002,UC.01.72-4W-0001,UC.01.13-1B-0003,UC.01.51-11-0020,UC.01.61-1K-0011,UC.01.72-4W-0005,UC.01.72-4W-0004,UC.01.72-4W-0003,UC.01.51-11-0025,UC.01.44-4K-0002,UC.01.62-1G-0001,UC.01.51-11-0027,UC.01.32-1F-0002,UC.01.32-2W-0002,UC.01.52-1W-0013,UC.01.32-2W-0001,UC.01.32-2W-0003,UC.01.52-1W-0012,UC.01.57-1W-0001,UC.01.32-1W-0004,UC.01.32-1K-0001,UC.01.32-1W-0002,UC.01.32-1K-0002,UC.01.32-1W-0008,UC.01.32-1W-0007,UC.01.61-1K-0001,UC.01.52-1G-0003,UC.01.51-1N-0001,UC.01.61-1K-0003,UC.01.63-11-0002,UC.01.61-1K-0002,UC.01.63-11-0003,UC.01.61-1K-0005,UC.01.61-1K-0004,UC.01.61-1K-0007,UC.01.61-1K-0006,UC.01.61-1K-0009,UC.01.51-1W-0003,UC.01.61-1K-0008,UC.01.63-11-0001

选型指南 - 步步精科技 - 2022/2/22 PDF 中文下载

步步精电子深挖大电流、防水功能Type-c连接器产品，新推高电流规格Type-c连接器、Type-C防水母座连接器

成立于1987年的深圳市步步精科技有限公司（原浙江步步精电子有限公司），是一家连接器产品、开关与线束的集成化方案供应商。公司旗下拥有Type-c、轻触开关、wafer连接器、USB、USB数据线、共享电源线材、汽车线束等产品。其中TYPE-C连接器产品为步步精的主营品类。目前步步精已发展出包括Type-C接口、Type-C母座、Type-C快充、Type-C贴片、Type-C连接器、防水Type-

公司动态发布时间 : 2021-03-18