Integrated USB 2.0 Compatible 4-Port Hub

Datasheet

Table 8.1 DC Electrical Characteristics (continued)

 

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

COMMENTS

 

 

 

 

 

 

 

Supply Current

 

 

 

 

 

Total from all supplies

Configured

 

 

 

 

 

 

(Full-Speed Host)

 

 

 

 

 

 

1

Port

 

 

 

 

mA

 

IFCC1

 

150

 

mA

 

2

Ports

IFCC2

 

155

 

mA

 

3

Ports

IFCC3

 

160

 

mA

 

4

Ports

IFCC4

 

165

 

 

 

 

 

 

 

 

 

 

Supply Current

ICSBY

 

265

 

uA

Total from all supplies.

Suspend

 

 

 

 

 

 

 

 

 

 

 

 

 

Supply Current

IRST

 

150

 

uA

Total from all supplies.

Reset

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Notes:

1.Output leakage is measured with the current pins in high impedance.

2.See USB 2.0 Specification for USB DC electrical characteristics.

3.RBIAS is a 3.3V tolerant analog pin.

CAPACITANCE TA = 25°C; fc = 1MHz; VDD33 = 3.3V

 

 

 

LIMITS

 

 

 

 

 

 

 

 

PARAMETER

SYMBOL

MIN

TYP

MAX

UNIT

TEST CONDITION

 

 

 

 

 

 

 

Clock Input

CIN

 

 

12

pF

All pins except USB pins (and pins under

Capacitance

 

 

 

 

 

test tied to AC ground)

 

 

 

 

 

 

 

Input Capacitance

CIN

 

 

8

pF

 

Output Capacitance

COUT

 

 

12

pF

 

Power Sequencing

There are no power supply sequence restrictions for the Hub. The order in which power supplies power-up and power-down is implementation dependent.

Revision 2.3 (08-27-07)

44

SMSC USB2504/USB2504A

 

DATASHEET