USB2504 datasheet(44/46 Pages) SMSC

44 / 46 page

Integrated USB 2.0 Compatible 4-Port Hub

Datasheet

Revision 2.1 (12-06-06)

SMSC USB2504/USB2504A

DATASHEET

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

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.

Supply Current

Configured

(Full-Speed Host)

1 Port

2 Ports

3 Ports

4 Ports

IFCC1

IFCC2

IFCC3

IFCC4

150

155

160

165

Total from all supplies

Supply Current

Suspend

ICSBY

265

Total from all supplies.

Supply Current

Reset

IRST

150

Total from all supplies.

LIMITS

PARAMETER

SYMBOL

MIN

TYP

MAX

UNIT

TEST CONDITION

Clock Input

Capacitance

CIN

All pins except USB pins (and pins under

test tied to AC ground)

Input Capacitance

CIN

8pF

Output Capacitance

COUT

Table 8.1 DC Electrical Characteristics (continued)

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

COMMENTS

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