SMSC USB2524 manual 54

							USB MultiSwitchTM Hub
							Datasheet
	Table 11.1	DC Electrical Characteristics (continued)
PARAMETER	SYMBOL		MIN	TYP	MAX	UNITS	COMMENTS
Input Buffer with Pull-
Down (IPD )
Low Input Level	VILI				0.8	V	TTL Levels
High Input Level
	VIHI		2.0			V
Low Input Leakage
	IILL				30	uA	VIN = 0
High Input Leakage
	IIHL				10	uA	VIN = VDD33
ICLK Input Buffer
Low Input Level	VILCK				0.5	V	TTL Levels
High Input Level	VIHCK		1.4			V
Input Leakage	IIL		-10		+10	uA	VIN = 0 to VDD33
I/OSD12 Type Buffer
Low Output Level	VOL				0.4	V	IOL = 12 mA @ VDD33 = 3.3V
Output Leakage	IOL		-10		+10	µA	VIN = 0 to VDD33
Hysteresis	VHYSI		250	300	350	mV	(Note 11.1)
IO-U
(Note 11.2)
I-R
(Note 11.3)
Supply Current							Note: 1 Upstream port is in
Unconfigured							suspend, and the
1High-Speed Hosts	ICCINIT			119		mA	other Upstream Port is
							in the process of being
1Full-Speed Hosts	ICCINIT			117		mA	enumerated by an
							external Host
							controller (all
							downstream ports
							assigned to the
							Upstream port under
							enumeration).
Supply Current							Note: Both Upstream Ports
Unconfigured							are in the process of
2 High-Speed Hosts	ICCINIT			199		mA	being enumerated by
							external Host
2 Full-Speed Hosts	ICCINIT			174		mA	controllers.
Supply Current							Total from all supplies
Configured
(2 upstream High-Speed
Hosts)
2 Ports @ FS/LS	IHCC2			198		mA
2 Ports @ HS	I			260		mA
1 Port HS, 1 Port FS/LS	IHCH1C1HCH2			240		mA
3 Ports HS	IHCH3			310		mA
4 Ports HS	IHCH4			340		mA

Revision 1.91 (08-22-07)	54	SMSC USB2524
	DATASHEET