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XRT7298IW

XRT7298IW

  • 厂商:

    SIPEX(迈凌)

  • 封装:

    SOJ28

  • 描述:

    IC DRIVER DS3/STS-1 E3 28SOJ

  • 数据手册
  • 价格&库存
XRT7298IW 数据手册
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LQSXW SLQ SLQ WKDWKDVGXW\F\FOHUDQJLQJIURPWR 7KLV IHDWXUH HOLPLQDWHV WKH QHHG IRU WKH XVHU WR SURYLGH D WUDQVPLW FORFN VLJQDO WR 7&/.  ZLWK D GXW\ F\FOH UDQJLQJ IURP  WR  IRU ( DQG  WR  IRU '6  7KH ;57 LV PDQXIDFWXUHG XVLQJ %L&026 WHFKQRORJ\ DQG LV SDFNDJHG LQ D SLQ 3',3 RU 62SDFNDJHV 7KH GHYLFH UHTXLUHV D VLQJOH 9 SRZHU VXSSO\ DQG FRQVXPHV D PD[LPXP SRZHU RI P: /LQH FXUUHQW IHHG  GHYLFH GLVVLSDWLRQ  ORDERING INFORMATION Part No. Package Operating T emperatureRange ;57,3  /HDG  0LO 3',3 q& WR  q& ;57,:  - /HDG  0LO -('(& 62- q& WR  q& 5HY  .  (;$5 &RUSRUDWLRQ  .DWR 5RDG )UHPRQW &$  `   ` )$;   XRT7298 BLOCK DIAGRAM Figure 1. XRT7298 Block Diagram 5HY   XRT7298 PIN CONFIGURATION 5&/.   51'$7$ 5&/.   51'$7$ 5/223   53'$7$ 5/223   53'$7$ //223   ,&7 //223   ,&7 '6676(   7;/(9 '6676(   7;/(9 7$26   9 7$26     77,3   ''$ ''' 9 ''$ 73'$7$   75,1* 73'$7$   71'$7$   *1'$ 71'$7$   *1'$ 7&/.   07,3 7&/.   07,3 9 ''' 9 77,3 75,1* *1''   05,1* *1''   05,1* (1&2',6   '02 (1&2',6   '02 '(&2',6   5&/.2 '(&2',6 %39   5326 %39     3//287   51(* 3//287   28 Lead PDIP (0.600”) 5&/.2 5326 51(* 28 Lead SOJ (Jedec,0.300”) PIN DESCRIPTION Pin #   Symbol 5&/. 5/223 T ype , ,  //223 ,  '6676 ( ,  7$26 ,   9''' 73'$7$ ,  71'$7$ ,    7&/. *1'' (1&2',6 ,  '(&2',6 , , Description ,QSXW VDPSOLQJ FORFN IRU 53'$7$ DQG 51'$7$ Remote Loop Back. $ KLJK RQ WKLV SLQ FDXVHV 53'$7$ DQG 51'$7$ WR WUDQVPLWWHG WR WKH OLQH XVLQJ 5&/. 6HWWLQJ 5/223 DQG //223 KLJK VLPXOWDQHRXVO\ LV QRW SHUPLWWHG Local Loop Back. $ KLJK RQ WKLV SLQ FDXVHV 73'$7$ DQG 71'$7$ WR SDVV WKURXJK WKH HQ FRGHU DQG RXWSXW DW 5326 DQG 51(* UHVSHFWLYHO\ 6HWWLQJ //223 DQG 5/223 KLJK VLPXOWD QHRXVO\ LV QRW SHUPLWWHG DS3, STS-1 or E3 Select Pin  $ KLJK RQ WKLV SLQ VHOHFWV '6 RU 676 RSHUDWLRQ DQG VHWV WKH HQFRGHU DQG GHFRGHU LQ %=6 PRGH $ ORZ VHOHFWV ( DQG VHWV WKH HQFRGHU DQG GHFRGHU LQ +'% PRGH T ransmit All Ones Select $ KLJK RQ WKLV SLQ FDXVHV D FRQWLQXRXV $0, DOO ·V SDWWHUQ WR EH WUDQVPLWWHG WR WKH OLQH 7KH IUHTXHQF\ LV GHWHUPLQHG E\ 7&/. 5 V Digital Supply ±  IRU DOO ORJLF FLUFXLWU\ T ransmit Positive Data 73'$7$ LV VDPSOHG RQ WKH IDOOLQJ HGJH RI 7&/. 3LQ  DQG SLQ  FDQ EH WLHG WRJHWKHU IRU ELQDU\ LQSXW VLJQDOV T ransmit NegativeData. 71'$7$ LV VDPSOHG RQ WKH IDOOLQJ HGJH RI 7&/. 3LQ  DQG SLQ  FDQ EH WLHG WRJHWKHU IRU ELQDU\ LQSXW VLJQDOV T ransmit Clock IRU 73'$7$ DQG 71'$7$ Digital Ground IRU DOO ORJLF FLUFXLWU\ Encoder Disable. $ KLJK RQ WKLV SLQ GLVDEOHV %=6 RU +'% HQFRGLQJ IXQFWLRQV XQOHVV RYHU ULGGHQ E\ 7$26 UHTXHVW 7KLV SLQ PXVW EH VHW KLJK LI 73'$7$ DQG 71'$7$ DUH DOUHDG\ HQ FRGHG DecoderDisable $ KLJK RQ WKLV SLQ GLVDEOHV %=6 RU +'% GHFRGLQJ IXQFWLRQV Receive Clock Input. 5HY   XRT7298 PIN DESCRIPTION (CONT’D) Pin #  Symbol %39 T ype 2      3//287 51(* 5326 5&/.2 '02 2 2 2 2 2  05,1* ,  07,3 ,   *1'$ 75,1* 2  77,3 2   9''$ 7;/(9  ,  ,&7 ,  53'$7$ ,  51'$7$ , Description  7KLV SLQ JRHV KLJK IRU RQH ELW SHULRG ZKHQ D ELSRODU YLRODWLRQ QRW FRUUHVSRQGLQJ WR WKH DSSURSULDWH FRGLQJ UXOH RU FRGLQJ HUURU LV GHWHFWHG LQ WKH 53'$7$ 51'$7$ VLJQDOV PLL Clock Output. &ORFN RXWSXW V\QFKURQL]HG WR 7&/. Receive NegativeData. 7KLV VLJQDO LV WKH GHFRGHG YHUVLRQ RI 51'$7$ Receive Positive Data 7KLV VLJQDO LV WKH GHFRGHG YHUVLRQ RI 53'$7$ Receive Clock Output 7KLV VLJQDO LV WKH LQYHUWHG YHUVLRQ RI 5&/. Driver Monitor Output. ,I QR WUDQVPLWWHG $0, VLJQDO LV SUHVHQW RQ 07,3 DQG 05,1* IRU  ±  7&/. FORFN SHULRGV '02 JRHV KLJK XQWLO WKH QH[W $0, VLJQDO LV GHWHFWHG Monitor Ring Input  $0, VLJQDO IURP 75,1* FDQ EH FRQQHFWHG WR WKLV SLQ IRU OLQH GULYHU IDLO XUH GHWHFWLRQ ,QWHUQDOO\ SXOOHG KLJK Monitor T ip Input  $0, VLJQDO IURP 77,3 FDQ EH FRQQHFWHG WR WKLV SLQ IRU OLQH GULYHU IDLOXUH GHWHFWLRQ ,QWHUQDOO\ SXOOHG KLJK Analog Ground IRU DQDORJ FLUFXLWU\ T ransmit Ring Output 7UDQVPLW $0, VLJQDO LV GULYHQ WR WKH OLQH YLD D  WUDQVIRUPHU IURP WKLV SLQ T ransmit T ip Output. 7UDQVPLW $0, VLJQDO LV GULYHQ WR WKH OLQH YLD D  WUDQVIRUPHU IURP WKLV SLQ 5V Analog Supply (± 5%) IRU DQDORJ FLUFXLWU\ T ransmit Level Select. 7KH RXWSXW VLJQDO DPSOLWXGH DW 77,3 DQG 75,1* FDQ EH YDULHG E\ VHWWLQJ WKLV SLQ KLJK RU ORZ :KHQ WKH FDEOH OHQJWK LV JUHDWHU WKDQ  IW 7;/(9 VKRXOG EH VHW KLJK :KHQ LW LV EHORZ  IW LW VKRXOG EH VHW ORZ 7KLV SLQ LV DFWLYH RQO\ ZLWK SLQ  VHW WR '6 RU 676 PRGH In-circuit T esting. $ ORZ DW WKLV SLQ FDXVHV DOO GLJLWDO DQG DQDORJ RXWSXWV WR JR LQWR D KLJKLP SHGDQFH VWDWH WR DOORZ IRU LQFLUFXLW WHVWLQJ ,QWHUQDOO\ SXOOHG KLJK Receive Positive Data 15= LQSXW GDWD WR WKH GHFRGHU EORFN 6DPSOHG RQ WKH IDOOLQJ HGJH RI 5&/. Receive NegativeData 15= LQSXW GDWD RI WKH GHFRGHU EORFN 6DPSOHG RQ IDOOLQJ HGJH RI 5&/. Bipolar Violation Output Note: 1 If a bipolarviolationoccurs,RPOS andRNEG cancorrespondto thedecoded versions of RNDAT A andRPDAT A respectively. If DECODIS is high,RPOS andRNEG alwaystrackRPDAT A andRNDAT A respectively. 5HY   XRT7298 ELECTRICAL CHARACTERISTICS (See Figure 8 ) T est Conditions: VDD = 5V ± 5%, T A = -40qC to +85qC, unless otherwise specified. All timing characteristics are measuredwith 10pF loading. Symbol Parameter AC Electrical Characteristics W5 W) W768 W7+2 W7'< W5 W) W568 W5+2 W5 W) W5'< 7&/. &ORFN 'XW\ &\FOH '6  676 7&/. &ORFN 'XW\ &\FOH ( 7&/. &ORFN 5LVH 7LPH  WR  7&/. &ORFN )DOO 7LPH  WR  73'$7$71'$7$ WR 7&/. )DOOLQJ 6HW 8S 7LPH 73'$7$71'$7$ WR 7&/. )DOOLQJ +ROG 7LPH 77,375,1* WR 7&/. 5LVLQJ 3URSDJDWLRQ 'HOD\  5&/. &ORFN 'XW\ &\FOH 5&/. &ORFN 5LVH 7LPH  WR  5&/. &ORFN )DOO 7LPH  WR  53'$7$51'$7$ WR 5&/. )DOOLQJ 6HW 8S 7LPH 53'$7$51'$7$ WR 5&/. )DOOLQJ +ROG 7LPH 5&/.2 &ORFN 5LVH 7LPH  WR  5&/.2 &ORFN )DOO 7LPH  WR  532651(*515= WR 5&/.2 5LVLQJ 3URSDJDWLRQ 'HOD\  DC Electrical Characteristics 9''' 9''$ 9,/ 9,+ 92/ 92+ ,/ &, &/ '& 6XSSO\ 9ROWDJH Min. T yp. Max. Units              QV QV QV QV QV  QV QV QV QV QV QV QV  9   9'''  9''' ±     P$ 9 9 9 9 P$ P$ S) S)        6XSSO\ &XUUHQW  ,QSXW /RZ 9ROWDJH ,QSXW +LJK 9ROWDJH 2XWSXW /RZ 9ROWDJH ,287 P$ 2XWSXW +LJK 9ROWDJH ,287 P$ ,QSXW /HDNDJH &XUUHQW  3LQ  ,QSXW 9 ,QSXW &DSDFLWDQFH /RDG &DSDFLWDQFH   9''  *1'' 9'''         Notes: 1 Whentheencoderis enabled,a handlingdelayof six TCLK clockcyclesfor B3ZS andseven clockcyclesfor HDB3 alwaysexists betweenTPDA T A/TNDAT A andTTIP/TRING. The handlingdelayis reducedtothreeanda halfcycleswhentheen coderis disabled. 2 Whenthedecoderis enabled,a handlingdelayof six anda halfRCLK clockcycleswill alwaysexist betweenRPDAT A/RNDAT A andRPOS/RNEG. The handlingdelayis reducedto oneandhalfRCLK clockcycleswhenthedecoderis disabled. 3 Supply currentis measuredwithtransmittersendingall ones AMI signal andwithT ransmit Level (TXLEV) set to high. 4 All inputs exceptpin 19, 20 andpin 26. Specifications are subject to changewithout notice 5HY   XRT7298 ABSOLUTE MAXIMUM RATINGS 3RZHU 6XSSO\                        WR 9 3RZHU 'LVVLSDWLRQ ',3 3NJ                    :              q& WR q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±   7KH SXOVH VKDSHU FLUFXLW XVHV D FRPELQDWLRQ RI ILOWHUV DQG ±  VOHZ UDWH FRQWURO WHFKQLTXHV WR SUHVKDSH WKH SXOVH JRLQJ 75,1* ±  RXW WR WKH OLQH 7KH DPSOLWXGH RI WKH WUDQVPLW SXOVH FDQ EH DGMXVWHG XVLQJ WKH 7;/(9 7UDQVPLW /HYHO SLQ :KHQ WKH  GLVWDQFH WR WKH FURVVFRQQHFW H[FHHGV  IW 7;/(9  Note: 1 T ransformer= Pulse EngineeringPE 65966, PE 65967 SurfaceMount,Same T ransformerfor DS3, STS-1 and E3. VKRXOG EH VHW KLJK :KHQ WKH GLVWDQFH LV OHVV WKDQ  IW 7;/(9 VKRXOG EH VHW ORZ 6HWWLQJ 7;/(9 KLJK HQDEOHV WKH WUDQVPLWWHU WR VHQG RXW D QRPLQDO YROWDJH RI 9 SHDN DQG P9 SHDN ZKHQ ORZ 7KH VWDWH RI 7;/(9 SLQ Figure 2. T ransmit Pulse Amplitude T est Circuit KDV QR HIIHFW RQ ( RSHUDWLRQ DRIVER MONITOR 8VLQJ 77,3 DQG 75,1* DV LQSXW WKH GULYHU PRQLWRU GHWHFWV GULYHU IDLOXUH E\ PRQLWRULQJ WKH DFWLYLWLHV DW 07,3 DQG 05,1* ,I QR VLJQDO LV GHWHFWHG RQ WKHVH SLQV IRU  7&/. F\FOHV ± Value 7XUQ 5DWLR  3ULPDU\ ,QGXFWDQFH  + ,VRODWLRQ 9ROWDJH 9UPV /HDNDJH ,QGXFWDQFH  + P P  F\FOHV '02 ZLOO EH VHW KLJK XQWLO WKH T able1. T ransmit T ransformer Characteristics QH[W $0, VLJQDO LV GHWHFWHG 5HY  Parameter  XRT7298 DS3 SIGNAL REQUIREMENTS AT THE DSX )RU '6 RSHUDWLRQ SXOVH FKDUDFWHULVWLFV DUH VSHFLILHG DW &XUUHQWO\ WZR LVRODWHG SXOVH WHPSODWH UHTXLUHPHQWV H[LVW WKH '6; ZKLFK LV DQ LQWHUFRQQHFWLRQ DQG WHVW SRLQW WKH $16, 7 SXOVH WHPSODWH See Table3 UHIHUUHG WR DV WKH FURVVFRQQHFW 7KH FURVVFRQQHFW H[LVWV 3 DQG WKH %HOOFRUH 751:7 SXOVH WHPSODWH DW WKH SRLQW ZKHUH WKH WUDQVPLWWHG VLJQDO UHDFKHV WKH SXOVH GLVWULEXWLRQ IUDPH MDFN WHPSODWHV 7KH '6; LQWHUFRQQHFWLRQ WUDQVPLWWHG E\ WKH ;57 andFigure PHHWV 7KH WKHVH VSHFLILFDWLRQ WDEOHV OLVW WKH VLJQDO UHTXLUHPHQWV Table1) 7KH ;57 FDQ WUDQVPLW WKURXJK  IHHW RI $ FDEOH WR WKH '6; LQ '6 PRGH Parameter Specification /LQH 5DWH /LQH &RGH 7HVW /RDG 3XOVH 6KDSH 0ESV ±  SSP %LSRODU ZLWK WKUHH VXEVWLWXWLRQ %=6  : p $Q LVRODWHG SXOVH PXVW ILW WKH WHPSODWH LQ Figure 3 RU Figure 4 7KH SXOVH DPSOLWXGH PD\ EH VFDOHG E\ D FRQVWDQW IDFWRU WR ILW WKH WHPSODWH 7KH SXOVH DPSOLWXGH PXVW EH EH WZHHQ 9SN DQG 9SN PHDVXUHG DW WKH FHQWHU RI WKH SXOVH )RU DQ DOO V WUDQVPLWWHG SDWWHUQ WKH SRZHU DW  ± 0+] PXVW EH  WR G%P DQG WKH SRZHU DW  ± 0+] PXVW EH G%P WR G%P  3RZHU /HYHOV   Notes : 1 The pulse templateproposedby G.703 standardsis shownin Figure 4 andspecifiedin T able4 The proposedG.703 standards furtherstatethatthevoltagein atimeslot containinga0 must notexceed 5% of thepeakpulse amplitude,exceptfortheresidue of precedingpulses. 2 The powerlevels specifiedbytheproposedG.703 standardsareidenticalexceptthatthepoweris tobe measuredin 3kHz bands. 3 The all 1s patternmust bea pureall 1s signal, withoutframingor othercontrolbits. p T able2. DSX•3 Interconnection Specification Lower Curve T ime 7 {   { 7 {  { 7 Upper Curve Equation T ime 7 {  { 7 {      >  VLQ > 7 @@  S Equation  >   VLQ > 7@@ H S  7 T able3. DSX-3 Pulse T emplateBoundaries for ANSI T1.404 Standards (See Figure 3. ) Lower Curve T ime  { 7 {   { 7 {   { 7 {  Upper Curve Equation T ime { 7{   { 7{    { 7{    >  VLQ >  7@@   S Equation  >   VLQ > 7@@  H S  7 T able4. DSX-3 Pulse T emplateBoundaries for Bellcore TR-NWT -000499Standards (See Figure 4) 5HY   XRT7298  NormalizedAmplitudes                       Figure 3. DSX-3 Isolated Pulse T emplatefor ANSI T1.404 Standards Parameter /LQH 5DWH /LQH &RGH 7HVW /RDG 3RZHU /HYHOV )RU 676 RSHUDWLRQ WKH FURVVFRQQHFW LV UHIHUUHG DW WKH Table5 OLVWV WKH VLJQDO UHTXLUHPHQWV DW WKH 676; ,QVWHDG RI WKH '6 LVRODWHG SXOVH WHPSODWH DQ H\H GLDJUDP PDVN LV VSHFLILHG IRU 676 RSHUDWLRQ 7$76
XRT7298IW 价格&库存

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