TNETX4090 datasheet(61/78 Pages) TI1

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TNETX4090

ThunderSWITCH II™ 9-PORT 100-/1000-MBIT/S ETHERNET™ SWITCH

SPWS044E – DECEMBER 1997 – REVISED AUGUST 1999

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

electrical characteristics over recommended operating conditions (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VOH

High-level output voltage

IOH = rated

VDD(3.3)–0.5

VOL

Low-level output voltage

IOL = rated

0.5

IOZ

High-impedance-state output

current

VO = VDD or GND

±10

µA

IIH

High-level input current

VI = VIH

µA

IIL

Low-level input current

VI = VIL

–1

µA

VOHR

High-level output voltage (RSL)

IOH

VDD

VOLR

Low-level output voltage (RSL)

0.4

IDD(2.5V)

VDD(2.5V) = max,

DTX_CLK and DRX_CLKf = 83.33 MHz

1.5

IDD(3.3V)

Supply current

VDD(3.3V) = max,

DTX_CLK and DRX_CLKf = 83.33 MHz

0.5

IDD(2.5)

VDD(2.5) = max,

DTX_CLK and DRX_CLKf = 83.33 MHz

0.175

Capacitance, input

Capacitance, output

timing requirements over recommended operating conditions

JTAG interface

control signals

RESET (see Figure 15)

NO.

MIN

MAX

UNIT

tw(RESETP) Pulse duration, RESET low at power up

100

µs

tw(RESET)

Pulse duration, RESET low at other times

tcycle

RESET

Figure 15. RESET

TNETX4090 数据表(PDF) 61 Page - Texas Instruments

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