TNETX3270 datasheet(51/66 Pages) TI1

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TNETX3270

ThunderSWITCH

™ 24/3 ETHERNET™ SWITCH

WITH 24 10-MBIT/S PORTS AND 3 10-/100-MBIT/S PORTS

SPWS043B – NOVEMBER 1997 – REVISED APRIL 1999

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

absolute maximum ratings over operating junction temperature range (unless otherwise noted)†

Supply voltage range: VDD(2.5V)

–0.5 V to 2.7 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

VDD(3.3V)

–0.5 V to 3.6 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Input voltage range, VI: Standard

–0.5 V to VDD(3.3V) + 0.4 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Output voltage range, VO: Standard

–0.5 V to VDD(2.5V) + 0.5 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Thermal impedance: Junction-to-ambient package, airflow = 0, ZθJA

°C/W

. . . . . . . . . . . . . . . . . . . . . . . . . .

Junction-to-ambient package, airflow = 150 fpm, ZθJA

11.5

°C/W

. . . . . . . . . . . . . . . . . . .

Junction-to-case package, 0 ZθJC

1.08

°C/W

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating case temperature range, TC

°C to 95°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature range, Tstg

–65

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTES:

1. Applies to external input buffers. Level-shifting inputs are relative to VDD(3.3V).

2. Applies to external output buffers. Level-shifting outputs are relative to VDD(3.3V).

recommended operating conditions

MIN

NOM

MAX

UNIT

VDD(2.5V)

Supply voltage

2.3

2.5

2.7

VDD(3.3V)

Supply voltage

3.3

3.6

VIH

High-level dc input voltage

2.3

3.3

VIL

Low-level dc input voltage

0.65

IOH

High-level output current

–2

IOL

Low-level output current

–2

electrical characteristics over recommended operating conditions (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VOH

High-level output voltage

IOH = rated

2.5

VOL

Low-level output voltage

IOL = rated

0.5

IIH

High-level input current

VI = VDD(3.3V)

µA

IIL

Low-level input current

VI = GND

–1

µA

IOZ

High-impedance-state output current

VO = VDD(3.3V),

VO = 0

±10

µA

IDD(2.5V)

Supply current

VDD(2.5V) = max,

f = 83.33 MHz

1.5

IDD(3.3V)

Supply current

VDD(3.3V) = max,

f = 83.33 MHz

0.175

Capacitance, input

Capacitance, output

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