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
51
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 15°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 0°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 V
VDD(3.3V) Supply voltage 3 3.3 3.6 V
VIH High-level dc input voltage 2.3 3.3 V
VIL Low-level dc input voltage 0 0.65 V
IOH High-level output current –2 mA
IOL Low-level output current –2 mA
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 V
VOL Low-level output voltage IOL = rated 0.5 V
IIH High-level input current VI = VDD(3.3V) 1µA
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 A
IDD(3.3V) Supply current VDD(3.3V) = max, f = 83.33 MHz 0.175 A
CiCapacitance, input 6 pF
CoCapacitance, output 6 pF