model insertion return loss cross talk com. to com. diff. to com. turns ratio loss (db min) rejection ratio mode rejection 1~100 2~30 40 50 60~80 1 30 60 100 1~60 60~100 1~60 60~100 1 mhz mhz mhz mhz mhz mhz (db min) tx/rx (db max) (db min) (db min) ( 5%) electrical characteristics @25 c o rise time & fall time @5.0ns (max), hi-pot test @60sec, 1500vrms, ocl @8ma dc bias 350uh (min) lf8258 -1.0 -18 -17 -14.5 -12 -65 -55 -45 -35 -40 -30 -40 -30 1:1 / 1:1 lf8264a -1.0 -18 -17 -14.5 -12 -65 -55 -45 -35 -40 -30 -40 -30 1:1 / 1:1 lf8702 -1.0 -18 -16 -12.0 -10 -65 -55 -45 -35 -40 -30 -40 -30 2:1 / 1:1 lf8703 -1.0 -18 -16 -12.0 -10 -65 -55 -45 -35 -40 -30 -40 -30 1:1.414 / 1:1 LF8707 -1.0 -18 -17 -14.5 -12 -65 -55 -45 -35 -40 -30 -40 -30 1:1 / 1:1 lf8708 -1.0 -18 -17 -14.5 -12 -65 -55 -45 -35 -40 -30 -40 -30 1:1 / 1:1 lf8715 -1.0 -18 -16 -12.0 -10 -65 -55 -45 -35 -40 -30 -40 -30 1.414:1 / 1:1 lf8725b -1.0 -18 -16 -12.0 -10 -65 -55 -45 -35 -40 -30 -40 -30 1.25:1 / 1:1 lf8726 -1.0 -18 -16 -12.0 -10 -65 -55 -45 -35 -40 -30 -40 -30 2:1 / 1:1 lf8731 -1.0 -18 -17 -14.5 -12 -65 -55 -45 -35 -40 -30 -40 -30 1:1 / 1:1 lf8737 -1.0 -18 -17 -14.5 -12 -65 -55 -45 -35 -40 -30 -40 -30 1:1 / 1:1 lf8741 -1.0 -18 -17 -14.5 -12 -65 -55 -45 -35 -40 -30 -40 -30 1:1 / 1:1 22 transformer modules fast ethernet 10base-t/100base-tx components networking m echanical construction g c i h j k a lf8** e d b f date code 16.76 12.18 24.13 1.27 0.76 j= 0 ~8 oo i = 1.00 0.254 / 0.039 0.010 h = 0.254 / 0.010 (typ) d = 16.00 0.254 / 0.630 0.010 e = 1.27 / 0.050 (typ) f = 0.46 0.127 / 0.018 0.005 k = 24.13 / 0.950 (typ) unit : mm / inch a = 28.00 0.254 / 1.102 0.010 b = 12.00 0.254 / 0.472 0.010 c = 5.80 0.254 / 0.228 0.010 g = 0.254 0.127 / 0.010 0.005 lf8258 0047 31-1, shien pan road, kuei san industrial zone, taoyuan shien, taiwan, r.o.c. tel: 886-3-3626301; fax: 886-3-3618901 delta electronics, inc. (taoyuan plant cpbg) ww w .delta ww .com /products/networking/ free datasheet http://
s chematics td+3 13........28 tx+3 tct 3 12........29 cmt 3 td-3 11 tx-3 rd+3 14........27 rx+3 rd-3 15 ........30 ........26 rx-3 td+4 18 .......23 tx+4 tct 4 17 .......24 cmt 4 td-4 16 tx-4 rd+4 19 .......22 rx+4 rd-4 20 .......25 .......21 rx-4 lf8258 1:1 20 rx4 19 21 22 18 tx4 16 17 1:1 rx3 15 14 23 24 25 26 1:1 27 29 tx3 12 13 10 11 1:1 9 rx2 8 28 30 31 32 1:1 34 33 tx1 rx1 tx2 6 7 5 1:1 4 3 2 35 36 1:1 39 37 38 1 1:1 40 port 2 pin name pin# pin# pin name port 4 pin name pin# pin# pin name port 1 pin name pin# pin# pin name pin name pin# pin# pin name port 3 p in assignment td+1 3 ........38 tx+1 tct 1 2 ........39 cmt 1 td-1 1 tx-1 rd+1 4 ........37 rx+1 rx-1 5 ........40 ........36 rx-1 td+2 8 ........33 tx+2 tct 2 7 ........34 cmt 2 td-2 6 tx-2 rd+2 9 ........32 rx+2 rx-2 10 ........35 .......31 rx-2 23 p in assignment lf8264, 8702, 8703, 8715 lf lf lf 13 15 14 12 11 tx4 rx4 tx3 rx3 tx2 rx2 tx1 rx1 5 4 3 2 1 28 26 27 29 30 36 37 38 39 40 10 9 8 7 6 31 34 33 32 35 18 20 19 17 16 23 21 24 22 25 td+1 3 .........38 tx+1 tct 1 4 .........37 cmt 1 td-1 5 tx-1 rd+1 1 .........40 rx+1 rx-1 2 .........36 .........39 rx-1 td+2 8 ........33 tx+2 tct 2 9 ........32 cmt 2 td-2 10 tx-2 rd+2 6 ........35 rx+2 rx-2 7 .......31 ........34 rx-2 td+3 13 ........28 tx+3 tct 3 14 ........27 cmt 3 td-3 15 tx-3 rd+3 11 ........30 rx+3 rd-3 12 ........26 ........29 rx-3 td+4 18 ........23 tx+4 tct 4 19 ........22 cmt 4 td-4 20 tx-4 rd+4 16 ........25 rx+4 rd-4 17 ........21 ........24 rx-4 port 2 pin name pin# pin# pin name port 4 pin name pin# pin# pin name port 1 pin name pin# pin# pin name pin name pin# pin# pin name port 3 transformer modules fast ethernet 10base-t/100base-tx components networking 31-1, shien pan road, kuei san industrial zone, taoyuan shien, taiwan, r.o.c. tel: 886-3-3626301; fax: 886-3-3618901 delta electronics, inc. (taoyuan plant cpbg) ww w .delta ww .com /products/networking/ free datasheet http://
s chematics td+1 4.........37 tx+1 tct 1 3.........38 cmt 1 td-1 5 tx-1 rd+1 1.........40 rx+1 rd-1 2 .........36 .........39 rx-1 td+2 7 ........34 tx+2 tct 2 8 ........33 cmt 2 td-2 6 tx-2 rd+2 10 .......31 rx+2 rx-2 9 ........35 ........32 rx-2 td+3 14 ........27 tx+3 tct 3 13 ........28 cmt 3 td-3 15 tx-3 rd+3 11 ........30 rx+3 rd-3 12 ........26 ........29 rx-3 td+4 17........24 tx+4 tct 4 18........23 cmt 4 td-4 16 tx-4 rd+4 20........21 rx+4 rd-4 19 ........25 ........22 rx-4 td+3 14........26 tx+3 tct 3 13........28 cmt 3 td-3 15 tx-3 rd+3 11........29 rx+3 rd-3 12 ........27 ........30 rx-3 td+4 16 ........22 tx+4 tct 4 18 ........23 cmt 4 td-4 17 tx-4 rd+4 19 ........25 rx+4 rd-4 20 ........21 ........24 rx-4 lf8708 LF8707 20 19 25 24 9 14 17 18 15 16 13 12 10 11 8 7 5 6 3 rx4 tx3 tx4 rx2 rx3 tx1 tx2 rx1 4 2 1 35 27 23 21 22 26 29 28 30 34 31 33 32 36 39 37 38 40 20 19 18 17 16 13 15 14 23 21 22 24 25 26 27 4 12 11 10 9 6 7 8 5 3 rx4 tx4 tx3 rx3 rx2 tx2 tx1 rx1 1 2 37 33 29 28 30 31 32 35 34 36 40 39 38 port 2 pin name pin# pin# pin name port 4 pin name pin# pin# pin name port 2 pin name pin# pin# pin name port 4 pin name pin# pin# pin name port 1 pin name pin# pin# pin name pin name pin# pin# pin name port 3 port 1 pin name pin# pin# pin name pin name pin# pin# pin name port 3 p in assignment td+1 4.........36 tx+1 tct 1 3.........38 cmt 1 td-1 5 tx-1 rd+1 1.........39 rx+1 rd-1 2 .........37 .........40 rx-1 td+2 6 ........32 tx+2 tct 2 8 ........33 cmt 2 td-2 7 tx-2 rd+2 9 ........35 rx+2 rx-2 10 ........31 .......34 rx-2 24 transformer modules fast ethernet 10base-t/100base-tx components networking p in assignment 31-1, shien pan road, kuei san industrial zone, taoyuan shien, taiwan, r.o.c. tel: 886-3-3626301; fax: 886-3-3618901 delta electronics, inc. (taoyuan plant cpbg) ww w .delta ww .com /products/networking/ free datasheet http://
td+1 4.........37 tx+1 tct 1 3.........38 cmt 1 td-1 5 tx-1 rd+1 1.........40 rx+1 rd-1 2 .........36 .........39 rx-1 td+2 7 ........34 tx+2 tct 2 8 ........33 cmt 2 td-2 6 tx-2 rd+2 10 .......31 rx+2 rx-2 9 ........35 ........32 rx-2 td+3 14 ........27 tx+3 tct 3 13 ........28 cmt 3 td-3 15 tx-3 rd+3 11 ........30 rx+3 rd-3 12 ........26 ........29 rx-3 td+4 17........24 tx+4 tct 4 18........23 cmt 4 td-4 16 tx-4 rd+4 20........21 rx+4 rd-4 19 ........25 ........22 rx-4 lf8725b 20 19 18 17 16 13 15 14 21 22 24 25 26 27 4 12 11 10 9 6 7 8 5 3 rx4 tx4 tx3 rx3 rx2 tx2 tx1 rx1 1 2 37 29 30 31 32 35 34 36 40 39 port 2 pin name pin# pin# pin name port 4 pin name pin# pin# pin name port 1 pin name pin# pin# pin name pin name pin# pin# pin name port 3 lf8726, lf8737 22 19 20 21 14 16 18 17 15 13 12 11 10 rx4 tx4 rx3 tx3 rx2 rx1 tx2 tx1 8 9 7 6 5 4 2 3 1 27 25 23 26 28 30 31 33 32 35 36 37 38 40 39 34 29 24 port 2 pin name pin# pin# pin name port 4 pin name pin# pin# pin name port 1 pin name pin# pin# pin name pin name pin# pin# pin name port 3 td+1 1 ........40 tx+1 tct 1 2 ........39 cmt 1 td-1 3 tx-1 rd+1 4 ........37 rx+1 rd-1 5 ........38 ........36 rx-1 td+2 6.........35 tx+2 tct 2 7.........34 cmt 2 td-2 8 tx-2 rd+2 9.........32 rx+2 rx-2 10 .........33 ........31 rx-2 td+3 11 ........30 tx+3 tct 3 12........29 cmt 3 td-3 13 tx-3 rd+3 14........27 rx+3 rd-3 15 ........28 ........26 rx-3 td+4 16 .......25 tx+4 tct 4 17 .......24 cmt 4 td-4 18 tx-4 rd+4 19 .......22 rx+4 rd-4 20 .......23 .......21 rx-4 transformer modules fast ethernet 10base-t/100base-tx components networking 38 33 28 23 25 s chematics p in assignment p in assignment 31-1, shien pan road, kuei san industrial zone, taoyuan shien, taiwan, r.o.c. tel: 886-3-3626301; fax: 886-3-3618901 delta electronics, inc. (taoyuan plant cpbg) ww w .delta ww .com /products/networking/ free datasheet http://
s chematics td+1 4 .........40 tx+1 tct 1 3 .........38 cmt 1 td-1 5 tx-1 rd+1 1 .........37 rx+1 rd-1 2 .........39 .........36 rx-1 td+2 7 ........31 tx+2 tct 2 8 ........33 cmt 2 td-2 6 tx-2 rd+2 10 .......34 rx+2 rx-2 9 ........32 ........35 rx-2 td+3 14 ........30 tx+3 tct 3 13 ........28 cmt 3 td-3 15 tx-3 rd+3 11 ........27 rx+3 rd-3 12 ........29 ........26 rx-3 td+4 17........21 tx+4 tct 4 18........23 cmt 4 td-4 16 tx-4 rd+4 20........24 rx+4 rd-4 19 ........22 ........25 rx-4 lf8741 14 20 19 18 17 16 15 13 rx4 tx4 tx3 rx1 rx2 tx2 rx3 tx1 4 11 12 10 9 8 7 6 5 3 1 2 30 29 21 22 24 25 40 39 31 32 38 35 26 27 34 36 37 33 28 23 port 2 pin name pin# pin# pin name port 4 pin name pin# pin# pin name port 1 pin name pin# pin# pin name pin name pin# pin# pin name port 3 26 transformer modules fast ethernet 10base-t/100base-tx components networking lf8731 rx1 tx1 1 5 4 2 3 40 39 36 37 38 tx2 rx2 6 10 9 7 8 35 34 31 32 33 rx3 tx3 11 15 14 12 13 30 29 26 27 28 tx4 rx4 16 20 19 17 18 25 24 21 22 23 td+1 1 .........40 tx+1 tct 1 3 .........38 cmt 1 td-1 2 tx-1 rd+1 4 .........37 rx+1 rd-1 5 .........39 .........36 rx-1 td+2 10 .......31 tx+2 tct 2 8 ........33 cmt 2 td-2 9 tx-2 rd+2 7 ........34 rx+2 rx-2 6 ........32 ........35 rx-2 td+3 11 ........30 tx+3 tct 3 13 ........28 cmt 3 td-3 12 tx-3 rd+3 14 ........27 rx+3 rd-3 15 ........29 ........26 rx-3 td+4 20........21 tx+4 tct 4 18........23 cmt 4 td-4 19 tx-4 rd+4 17........24 rx+4 rd-4 16 ........22 ........25 rx-4 port 2 pin name pin# pin# pin name port 4 pin name pin# pin# pin name port 1 pin name pin# pin# pin name pin name pin# pin# pin name port 3 for auto mdi/mdix applications p in assignment p in assignment 31-1, shien pan road, kuei san industrial zone, taoyuan shien, taiwan, r.o.c. tel: 886-3-3626301; fax: 886-3-3618901 delta electronics, inc. (taoyuan plant cpbg) ww w .delta ww .com /products/networking/ free datasheet http://
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