파트넘버.co.kr LF8708 데이터시트 PDF


LF8708 반도체 회로 부품 판매점

FAST ETHERNET 10BASE-T/100BASE-TX TRANSFORMER MODULES



Delta 로고
Delta
LF8708 데이터시트, 핀배열, 회로
FAST ETHERNET 10BASE-T/100BASE-TX
TRANSFORMER MODULES
Networking
Components
LF8258 0047
ELECTRICAL CHARACTERISTICS @25oC
Rise Time & Fall Time @5.0ns (Max), Hi-Pot Test @60Sec, 1500Vrms, OCL @8mA DC Bias 350uH (Min)
Model
Insertion
Loss
(dB Max)
1~100
MHz
Return Loss
(dB Min)
2~30 40 50 60~80
MHz
Cross Talk
(dB Min)
1 30 60 100
MHz
Com. To Com.
Rejection Ratio
(dB Min)
1~60 60~100
MHz
Diff. To Com.
Mode Rejection
(dB Min)
1~60 60~100
MHz
Turns Ratio
TX/RX
( 5%)
1
MHz
LF8258
LF8264A
LF8702
LF8703
LF8707
LF8708
LF8715
LF8725B
LF8726
LF8731
LF8737
LF8741
-1.0 -18 -17 -14.5 -12 -65 -55 -45 -35 -40
-1.0 -18 -17 -14.5 -12 -65 -55 -45 -35 -40
-1.0 -18 -16 -12.0 -10 -65 -55 -45 -35 -40
-1.0 -18 -16 -12.0 -10 -65 -55 -45 -35 -40
-1.0 -18 -17 -14.5 -12 -65 -55 -45 -35 -40
-1.0 -18 -17 -14.5 -12 -65 -55 -45 -35 -40
-1.0 -18 -16 -12.0 -10 -65 -55 -45 -35 -40
-1.0 -18 -16 -12.0 -10 -65 -55 -45 -35 -40
-1.0 -18 -16 -12.0 -10 -65 -55 -45 -35 -40
-1.0 -18 -17 -14.5 -12 -65 -55 -45 -35 -40
-1.0 -18 -17 -14.5 -12 -65 -55 -45 -35 -40
-1.0 -18 -17 -14.5 -12 -65 -55 -45 -35 -40
-30
-30
-30
-30
-30
-30
-30
-30
-30
-30
-30
-30
-40 -30
1:1 / 1:1
-40 -30
1:1 / 1:1
-40 -30
2:1 / 1:1
-40 -30 1:1.414 / 1:1
-40 -30
1:1 / 1:1
-40 -30
1:1 / 1:1
-40 -30 1.414:1 / 1:1
-40 -30 1.25:1 / 1:1
-40 -30
2:1 / 1:1
-40 -30 1:1 / 1:1
-40 -30 1:1 / 1:1
-40 -30
1:1 / 1:1
MECHANICAL CONSTRUCTION
A
24.13
LF8**
E
K
F
BD
DATE CODE
1.27
C
I
12.18 16.76
0.76
J
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
D = 16.00 0.254 / 0.630 0.010
E = 1.27 / 0.050 (TYP)
F = 0.46 0.127 / 0.018 0.005
G = 0.254 0.127 / 0.010 0.005
H = 0.254 / 0.010 (TYP)
I = 1.00 0.254 / 0.039 0.010
J = 0o ~ 8o
K = 24.13 / 0.950 (TYP)
DELTA ELECTRONICS, INC.
(TAOYUAN PLANT CPBG) 31-1, SHIEN PAN ROAD, KUEI SAN INDUSTRIAL ZONE, TAOYUAN SHIEN, TAIWAN, R.O.C.
TEL: 886-3-3626301; FAX: 886-3-3618901
www.deltaww.com/products/networking/
22
Free Datasheet http://www.Datasheet4U.com


LF8708 데이터시트, 핀배열, 회로
FAST ETHERNET 10BASE-T/100BASE-TX
TRANSFORMER MODULES
Networking
Components
SCHEMATICS
LF8258
1:1
1
TX1 2
3
1:1
4
RX1
5
1:1
6
TX2 7
8
1:1
9
RX2
10
1:1
11
TX3 12
13
1:1
14
RX3
15
1:1
16
TX4 17
18
1:1
19
RX4
20
PIN ASSIGNMENT
Port 1
Pin Name Pin# Pin# Pin Name
TD+1
3 ........38
TX+1
TCT 1 2 ........39 CMT 1
TD-1
1 ........40 TX-1
RD+1 4 ........37 RX+1
RX-1
5 ........36 RX-1
40
38
39
37
36
35
33
34
32
31
30
28
29
27
26
25
23
24
22
21
Port 3
Pin Name Pin# Pin# Pin Name
TD+3 13........28
TX+3
TCT 3 12........29
CMT 3
TD-3
11 ........30
TX-3
RD+3 14........27
RX+3
RD-3 15........26
RX-3
Port 2
Pin Name Pin# Pin# Pin Name
TD+2
8 ........33
TX+2
TCT 2 7 ........34
CMT 2
TD-2
6 ........35
TX-2
RD+2
9 ........32
RX+2
RX-2
10 .......31
RX-2
Port 4
Pin Name Pin# Pin# Pin Name
TD+4 18 .......23
TX+4
TCT 4 17 .......24
CMT 4
TD-4 16 .......25
TX-4
RD+4 19 .......22
RX+4
RD-4 20 .......21
RX-4
LF8264, LF8702, LF8703, LF8715
1
RX1
2
3
TX1 4
5
6
RX2
7
8
TX2 9
10
11
RX3
12
13
TX3 14
15
16
RX4
17
TX4 18
19
20
40
39
37
38
36
35
34
32
33
31
30
29
27
28
26
25
24
22
23
21
PIN ASSIGNMENT
Port 1
Pin Name Pin# Pin# Pin Name
TD+1 3 .........38 TX+1
TCT 1 4 .........37 CMT 1
TD-1 5 .........36 TX-1
RD+1 1 .........40 RX+1
RX-1 2 .........39 RX-1
Port 3
Pin Name Pin# Pin# Pin Name
TD+3 13 ........28
TX+3
TCT 3 14 ........27
CMT 3
TD-3 15 ........26
TX-3
RD+3 11 ........30
RX+3
RD-3 12 ........29
RX-3
Port 2
Pin Name Pin# Pin# Pin Name
TD+2
8 ........33
TX+2
TCT 2 9 ........32
CMT 2
TD-2
10 .......31
TX-2
RD+2
6 ........35
RX+2
RX-2
7 ........34
RX-2
Port 4
Pin Name Pin# Pin# Pin Name
TD+4 18 ........23 TX+4
TCT 4 19 ........22 CMT 4
TD-4 20 ........21 TX-4
RD+4 16 ........25 RX+4
RD-4 17 ........24 RX-4
DELTA ELECTRONICS, INC.
(TAOYUAN PLANT CPBG) 31-1, SHIEN PAN ROAD, KUEI SAN INDUSTRIAL ZONE, TAOYUAN SHIEN, TAIWAN, R.O.C.
TEL: 886-3-3626301; FAX: 886-3-3618901
www.deltaww.com/products/networking/
23
Free Datasheet http://www.Datasheet4U.com




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