LAN8820I datasheet(63/83 Pages) MICROCHIP

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DS00001871B-page 63

LAN8820/LAN8820I

5.4

DC Specifications

Note 5-5

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

resistors add +/- 50uA per-pin (typical).

Note 5-6

XI can optionally be driven from a 25MHz single-ended clock oscillator.

Note 5-7

IEEE 802.ab Test Mode 1

Note 5-8

From 1/2 of average VOP, Test Mode 1

TABLE 5-7:

I/O BUFFER CHARACTERISTICS

Parameter

Symbol

Min

Typical

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

(VIN = VSS or VDD25IO)

Input Capacitance

VILI

VIHI

VILT

VIHT

VHYS

IIH

CIN

-0.3

0.64

0.81

102

-10

1.15

1.29

136

3.6

1.76

1.90

288

Schmitt trigger

Note 5-5

O6 Type Buffers

Low Output Level

High Output Level

VOL

VOH

VDD25IO -

0.4

IOL = 6mA

IOH = -6mA

O8 Type Buffers

Low Output Level

High Output Level

VOL

VOH

VDD25IO -

0.4

IOL = 8mA

IOH = -8mA

ICLK Type Buffer

(XI Input)

Low Input Level

High Input Level

VILI

VIHI

-0.3

1.4

0.5

3.6

Note 5-6

TABLE 5-8:

1000BASE-T TRANSCEIVER CHARACTERISTICS

Parameter

Symbol

Min

Typ

Max

Units

Notes

Peak Differential Output Voltage

VOP

670

820

Note 5-7

Signal Amplitude Symmetry

VSS

Note 5-7

Signal Scaling

VSC

Note 5-8

Output Droop

VOD

73.1

Note 5-7

Transmission Distortion

Note 5-9

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