FAST ETHERNET 10BASE-T/100BASE-TX
TRANSFORMER MODULES
Networking Components
LF
85
09
ELECTRICAL CHARACTERISTICS @25 C
Rise Time & Fall Time @5.0ns (Max), Hi-Pot Test @60Sec, 1500Vrms, OCL @8mA DC Bias 350uH (Min)
Insertion
Loss
(dB Max)
1~100
MHz
-1.0
Return Loss
(dB Min)
2~30 40 50
MHz
-18 -17 -14.5
60~80
-12
1
Cross Talk
(dB Min)
30
60
MHz
100
-35
Com. To Com.
Rejection Ratio
(dB Min)
1~60
60~100
MHz
-40
-30
Diff. To Com.
Mode Rejection
(dB Min)
1~60
60~100
MHz
-40
-30
Turns Ratio
TX/RX
( 5%)
1
MHz
1:1 / 1:1
o
Model
LF8509
-65 -55 -45
MECHANICAL CONSTRUCTION
SCHEMATICS
A
16
9
1
16
TX
LF8509
B
D
3
2
14
15
10
11
1
F
K
8
DATE CODE
7
6
C
8
9
G
E
H
RX
I
J
8.89
UNIT : mm / inch
A = 12.70 0.254 / 0.500 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
o
o
J=0 ~8
K = 8.89 / 0.350 (TYP)
1.27
13.2 17.2
0.64
DELTA ELECTRONICS, INC.
(TAOYUAN PLANT CPBG)
252, SAN YING ROAD, KUEI SAN INDUSTRIAL ZONE, TAOYUAN SHIEN, TAIWAN, R.O.C.
TEL: 886-3-3591968; FAX: 886-3-3591991
Http://www.deltaww.com/products/networking
A-19
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