Texas Instruments TNETX3270 specifications Recommended operating conditions, MIN NOM MAX Unit

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

absolute maximum ratings over operating junction temperature range (unless otherwise noted)²

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

²Stresses beyond those listed under ªabsolute maximum ratingsº 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 ªrecommended operating conditionsº 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)		1	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	A
IDD(3.3V)	Supply current	VDD(3.3V) = max,	f = 83.33 MHz	0.175	A
Ci	Capacitance, input			6	pF
Co	Capacitance, output			6	pF

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