KSZ8041FTLI Micrel Inc, KSZ8041FTLI Datasheet - Page 62

• Manufacturer Part Number: KSZ8041FTLI
• Description: Physical Layer Transceiver 10/100BASE-FX ( )
• Manufacturer: Micrel Inc
• Type: Transceiverr

Specifications of KSZ8041FTLI

• Number Of Drivers/receivers: 1/1
• Protocol: SMII
• Voltage - Supply: 3.135 V ~ 3.465 V
• Mounting Type: Surface Mount
• Package / Case: 48-TQFP, 48-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 576-3294 - BOARD EVALUATION KSZ8041FTL
• Lead Free Status / RoHS Status: Compliant, Lead free / RoHS Compliant
• Other names: 576-3347

Micrel, Inc.
Selection of Isolation Transformer
A 1:1 isolation transformer is required at the line interface. An isolation transformer with integrated common-mode chokes
is recommended for exceeding FCC requirements.
The following table gives recommended transformer characteristics.
Selection of Reference Crystal
December 2009
Parameter
Turns ratio
Open-circuit inductance (min.)
Leakage inductance (max.)
Inter-winding capacitance (typ.)
D.C. resistance (typ.)
Insertion loss (max.)
HIPOT (min.)
Characteristics
Frequency
Frequency tolerance (max)
Load capacitance
Series resistance
Magnetic Manufacturer
Bel Fuse
Bel Fuse (Mag Jack)
Bel Fuse (Mag Jack)
Delta
LanKom
Pulse
Pulse (low cost)
Transpower
TDK (Mag Jack)
Table 26. Typical Reference Crystal Characteristics
Table 25. Qualified Single Port Magnetics
Table 24. Transformer Selection Criteria
Part Number
S558-5999-U7
SI-46001
SI-50170
LF8505
LF-H41S
H1102
H1260
HB726
TLA-6T718
1 CT : 1 CT
12pF
Value
350μH
0.4μH
0.9Ÿ
-1.0dB
1500Vrms
Value
62
r50
20
40
25
Auto MDI-X
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Test Condition
100mV, 100kHz, 8mA
1MHz (min.)
0MHz – 65MHz
Number of Port
Units
MHz
ppm
pF
Ÿ
1
1
1
1
1
1
1
1
1
KSZ8041TL/FTL/MLL
M9999-120909-1.2