LXT975B datasheet(52/74 Pages) INTEL

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LXT974/LXT975 — Fast Ethernet 10/100 Quad Transceivers

Datasheet

Table 29. 100BASE-FX Transceiver Characteristics

Parameter

Sym

Min

Typ

Max

Units

Test Conditions

Transmitter

Peak differential output voltage

(single ended)

VOP

0.6

–

1.5

–

Signal rise/fall time

TRF

––

1.6

10 <–> 90%

2.0 pF load

Jitter (measured differentially)

––

–

1.3

–

Receiver

Peak differential input voltage

VIP

0.55

–

1.5

–

Common mode input range

VCMIR

2.25

–

VCC - 0.5

–

1. Typical values are at 25 °C and are for design aid only; not guaranteed and not subject to production testing.

Table 30. 10BASE-T Transceiver Characteristics

Parameter

Sym

Min

Typ

Max

Units

Test Conditions

Transmitter

Peak differential

output voltage

VOP

2.2

2.5

2.8

With specified transformer, line

replaced by 100

Ω (±1%) resistor

Link transmit period

–

Transmit timing jitter added by the

MAU and PLS sections2,3

–

After line model specified by IEEE

802.3 for 10BASE-T MAU

Receiver

Receive input impedance2

ZIN

–

3.6

–

Ω

Between TPIP and TPIN

Link min receive

–

7ms

–

Link max receive

–

150

–

Time link loss receive

–

150

–

Differential squelch threshold

VDS

300

390

585

mV Peak

5 MHz square wave input

1. Typical values are at 25 °C and are for design aid only; not guaranteed and not subject to production testing.

2. Parameter is guaranteed by design; not subject to production testing.

3. IEEE 802.3 specifies maximum jitter addition at 1.5 ns for the AUI cable, 0.5 ns from the encoder, and 3.5 ns from the MAU.

LXT975B Datasheet(PDF) 52 Page - Intel Corporation

LXT975B Datasheet(HTML) 52 Page - Intel Corporation

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