KSZ8851-16MLLU TR Micrel, KSZ8851-16MLLU TR Datasheet - Page 80
KSZ8851-16MLLU TR
Manufacturer Part Number
KSZ8851-16MLLU TR
Description
Ethernet ICs Single-Port Ethernet Controller (Automotive Grade)
Manufacturer
Micrel
Datasheet
1.KSZ8851-16MLLU.pdf
(83 pages)
Specifications of KSZ8851-16MLLU TR
Rohs
yes
Product
Ethernet Controllers
Package / Case
LQFP-48
Mounting Style
SMD/SMT
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Selection of Isolation Transformers
A 1:1 isolation transformer is required at the line interface. An isolation transformer with integrated common-mode choke
is recommended for exceeding FCC requirements.
Table 19 gives recommended transformer characteristics.
Selection of Reference Crystal
May 2012
Chacteristics
Frequency
Frequency tolerance (max)
Load capacitance (max)
Series resistance
Parameter
Turns ratio
Open-circuit inductance (min)
Leakage inductance (max)
Inter-winding capacitance (max)
D.C. resistance (max)
Insertion loss (max)
HIPOT (min)
Magnetic Manufacturer
Pulse
Pulse (low cost)
Transpower
Bel Fuse
Delta
LanKom
TDK (Mag Jack)
Micrel, Inc.
Table 21. Typical Reference Crystal Characteristics
Table 20. Qualified Single Port Magnetics
Table 19. Transformer Selection Criteria
80
Part Number
H1102
H1260
HB726
S558-5999-U7
LF8505
LF-H41S
TLA-6T718
Value
1 CT : 1 CT
350H
0.4H
12pF
0.9
1.0dB
1500Vrms
Auto MDI-X
Value
25
50
20
40
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Test Condition
100mV, 100kHz, 8mA
1MHz (min)
0MHz – 65MHz
KSZ8851-16MLL/MLLI
M9999-050112-2.1
Number of Port
Units
MHz
ppm
pF
1
1
1
1
1
1
1
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