LAN9514 datasheet(42/54 Pages) MICROCHIP

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LAN9514/LAN9514I

DS00002306A-page 42

 2009-2016 Microchip Technology Inc.

Note 4-6

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

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

Note 4-7

This is the total 5.5V input leakage for the entire device.

Note 4-8

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

Note 4-9

Measured at line side of transformer, line replaced by 100Ω (+/- 1%) resistor.

Note 4-10

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

Note 4-11

Measured differentially.

Note 4-12

Min/max voltages guaranteed as measured with 100

 resistive load.

4.5

AC Specifications

This section details the various AC timing specifications of the LAN9514/LAN9514i.

ICLK Type Buffer (XI Input)

Low Input Level

High Input Level

VILI

VIHI

-0.3

1.4

0.5

3.6

Note 4-8

TABLE 4-6:

100BASE-TX TRANSCEIVER CHARACTERISTICS

Parameter

Symbol

Min

Typ

Max

Units

Notes

Peak Differential Output Voltage High

VPPH

950

—

1050

mVpk

Note 4-9

Peak Differential Output Voltage Low

VPPL

-950

—

-1050

mVpk

Note 4-9

Signal Amplitude Symmetry

VSS

—

102

Note 4-9

Signal Rise and Fall Time

TRF

3.0

—

5.0

Note 4-9

Rise and Fall Symmetry

TRFS

——

0.5

Note 4-9

Duty Cycle Distortion

DCD

Note 4-10

Overshoot and Undershoot

VOS

——

—

Jitter

—

1.4

Note 4-11

TABLE 4-7:

10BASE-T TRANSCEIVER CHARACTERISTICS

Parameter

Symbol

Min

Typ

Max

Units

Notes

Transmitter Peak Differential Output Voltage

VOUT

2.2

2.5

2.8

Note 4-12

Receiver Differential Squelch Threshold

VDS

300

420

585

—

TABLE 4-5:

I/O BUFFER CHARACTERISTICS (CONTINUED)

Parameter

Symbol

Min

Typ

Max

Units

Notes

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