KSZ8041TLI-S Micrel, KSZ8041TLI-S Datasheet - Page 56

• Manufacturer Part Number: KSZ8041TLI-S
• Description: Ethernet ICs Physical Layer Transceiver 10/100BASE-FX (Lead Free)
• Manufacturer: Micrel

Specifications of KSZ8041TLI-S

• Rohs: yes
• Product: Ethernet Transceivers
• Package / Case: TQFP-48
• Mounting Style: SMD/SMT

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
April 2007
Parameter
Turns ratio
Open-circuit inductance (min.)
Leakage inductance (max.)
Inter-winding capacitance (max.)
D.C. resistance (max.)
Insertion loss (max.)
HIPOT (min.)
Characteristics
Frequency
Frequency tolerance (max)
Load capacitance (max)
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 25. Typical Reference Crystal Characteristics
Table 24. Qualified Single Port Magnetics
Table 23. Transformer Selection Criteria
Part Number
S558-5999-U7
SI-46001
SI-50170
LF8505
LF-H41S
H1102
H1260
HB726
TLA-6T718
12pF
Value
1 CT : 1 CT
350µH
0.4µH
0.9Ω
1.0dB
1500Vrms
Value
56
±50
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
Ω
1
1
1
1
1
1
1
1
1
M9999-042707-1.1
KSZ8041TL/FTL