LAN89218 datasheet(136/148 Pages) MICROCHIP

136 / 148 page

LAN89218

DS60001255B-page 136

 2008-2015 Microchip Technology Inc.

Note 1:

This specification applies to all inputs and tri-stated bi-directional pins. Internal pull-down and pull-up resis-

tors add

50 µA per-pin (typical).

Note 2:

This is the total VIN input leakage for the entire device. This value should be divided by the number of pins

driven to VIN MAX to calculate per-pin leakage. For example, if 10 pins are driven to the maximum opera-

tional limit for VIN, the per-pin input leakage is the maximum input leakage current divided by 10.

Note 1:

Measured at the line side of the transformer, line replaced by 100 Ω (

1%) resistor.

Note 2:

Offset from 16 ns pulse width at 50% of pulse peak.

Note 3:

Measured differentially.

Note 1:

Measured at the line side of the transformer, line replaced by 100 Ω (

1%) resistor.

O8 Type Buffer

Low Output Level

VOL

0.48

IOL = 8 mA

High Output Level

VOH

VDD - 0.5

IOH = -8 mA

ICLK Input Buffer

Low Input Level

VILCK

-0.3

0.5

High Input Level

VIHCK

1.4

3.6

TABLE 7-6:

100BASE-TX TRANSCEIVER CHARACTERISTICS

Parameter

Symbol

Min.

Typ.

Max.

Unit

Note

Peak Differential Output Voltage High

VPPH

950

1050

mVpk

See Note 1

Peak Differential Output Voltage Low

VPPL

-950

-1050

mVpk

See Note 1

Signal Amplitude Symmetry

VSS

102

See Note 1

Signal Rise & Fall Time

TRF

3.0

5.0

See Note 1

Rise & Fall Time Symmetry

TRFS

0.5

See Note 1

Duty Cycle Distortion

DCD

±250

See Note 2

Overshoot & Undershoot

VOS

4.2

Jitter

1.4

See Note 3

TABLE 7-7:

10BASE-T TRANSCEIVER CHARACTERISTICS

Parameter

Symbol

Min.

Typ.

Max.

Unit

Note

Transmitter Peak Differential Output

Voltage

VOUT

2.2

2.5

2.8

See Note 1

Receiver Differential Squelch

Threshold

VDS

516

TABLE 7-5:

I/O BUFFER CHARACTERISTICS (CONTINUED)

Parameter

Symbol

Min.

Typ.

Max.

Unit

Note

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