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LAN9312 Datasheet(PDF) 443 Page - SMSC Corporation

Part # LAN9312
Description  High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
PDF  458 Pages
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Manufacturer  SMSC [SMSC Corporation]
Direct Link  http://www.smsc.com
Logo SMSC - SMSC Corporation

LAN9312 Datasheet(HTML) 443 Page - SMSC Corporation

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High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
Datasheet
SMSC LAN9312
443
Revision 1.2 (04-08-08)
DATASHEET
15.4
DC Specifications
Note 15.5
This specification applies to all IS type inputs and tri-stated bi-directional pins. Internal pull-
down and pull-up resistors add +/- 50uA per-pin (typical).
Note 15.6
XI can optionally be driven from a 25MHz single-ended clock oscillator.
Table 15.3 I/O Buffer Characteristics
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
IS Type Input Buffer
Low Input Level
High Input Level
Negative-Going Threshold
Positive-Going Threshold
SchmittTrigger Hysteresis
(VIHT - VILT)
Input Leakage
Input Capacitance
VILI
VIHI
VILT
VIHT
VHYS
IIN
CIN
-0.3
1.01
1.39
345
-10
1.18
1.6
420
3.6
1.35
1.8
485
10
3
V
V
V
V
mV
uA
pF
Schmitt trigger
Schmitt trigger
Note 15.5
O8 Type Buffers
Low Output Level
High Output Level
VOL
VOH
VDD33IO - 0.4
0.4
V
V
IOL = 8mA
IOH = -8mA
OD8 Type Buffer
Low Output Level
VOL
0.4
V
IOL = 8mA
O12 Type Buffer
Low Output Level
High Output Level
VOL
VOH
VDD33IO - 0.4
0.4
V
V
IOL = 12mA
IOH = -12mA
OD12 Type Buffer
Low Output Level
VOL
0.4
V
IOL = 12mA
ICLK Type Buffer (XI Input)
Low Input Level
High Input Level
VILI
VIHI
-0.3
1.4
0.5
3.6
V
V
Note 15.6
Table 15.4 100BASE-TX Transceiver Characteristics
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Peak Differential Output Voltage High
VPPH
950
-
1050
mVpk
Note 15.7
Peak Differential Output Voltage Low
VPPL
-950
-
-1050
mVpk
Note 15.7
Signal Amplitude Symmetry
VSS
98
-
102
%
Note 15.7
Signal Rise and Fall Time
TRF
3.0
-
5.0
nS
Note 15.7
Rise and Fall Symmetry
TRFS
--
0.5
nS
Note 15.7
Duty Cycle Distortion
DCD
35
50
65
%
Note 15.8



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