KSZ8842-16MBLI TR Micrel Inc, KSZ8842-16MBLI TR Datasheet - Page 135
KSZ8842-16MBLI TR
Manufacturer Part Number
KSZ8842-16MBLI TR
Description
2-Port Ethernet Switch + Generic (8, 16-Bit) Bus Interface (I-Temp)
Manufacturer
Micrel Inc
Datasheet
1.KSZ8842-16MBLI_TR.pdf
(141 pages)
Specifications of KSZ8842-16MBLI TR
Number Of Primary Switch Ports
2
Internal Memory Buffer Size
32
Operating Supply Voltage (typ)
3.3V
Fiber Support
Yes
Integrated Led Drivers
Yes
Phy/transceiver Interface
MII
Power Supply Type
Analog/Digital
Data Rate (typ)
10/100Mbps
Vlan Support
Yes
Operating Temperature (max)
85C
Operating Temperature (min)
-40C
Mounting
Surface Mount
Jtag Support
No
Operating Supply Voltage (max)
3.5V
Operating Supply Voltage (min)
3.1V
Operating Temperature Classification
Industrial
Data Rate
100Mbps
Lead Free Status / RoHS Status
Compliant
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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 to exceed FCC requirements.
Table 35 gives recommended transformer characteristics.
Selection of Reference Crystal
Micrel, Inc.
October 2007
Parameter
Turns ratio
Open-circuit inductance (min)
Leakage inductance (max)
Inter-winding capacitance (max)
D.C. resistance (max)
Insertion loss (max)
HIPOT (min)
Chacteristics
Frequency
Frequency tolerance (max)
Load capacitance (max)
Series resistance
Magnetic Manufacturer
Pulse
Pulse (low cost)
Transpower
Bel Fuse
Delta
LanKom
TDK (Mag Jack)
Table 37. Typical Reference Crystal Characteristics
Table 35. Transformer Selection Criteria
Table 36. Qualified Single Port Magnetic
Part Number
H1102
H1260
HB726
S558-5999-U7
LF8505
LF-H41S
TLA-6T718
135
Value
1 CT : 1 CT
350µH
0.4µH
12pF
0.9Ω
1.0dB
1500Vrms
Value
25
±50
20
25
Auto MDI-X
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Test Condition
100mV, 100kHz, 8mA
1MHz (min)
0MHz – 65MHz
Units
MHz
ppm
pF
Ω
KSZ8842-16/32 MQL/MVL/MVLI/MBL
Number of Port
1
1
1
1
1
1
1
M9999-102207-1.9
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