SMSC USB2502 Manual De Usuario

2-Port USB 2.0 Hub Controller

SMSC USB2502

41

Revision 2.3 (08-27-07)

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.

V

DD33CR

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
Suspend

I

CSBY

320 

425

uA

Total from all supplies.

Supply Current
Reset

I

RST

160 

300

uA

Total from all supplies.

Clock Input 
Capacitance

C

IN

12

pF

All pins except USB pins (and pins under 
test tied to AC ground)

Input Capacitance

C

IN

8

pF

Output Capacitance

C

OUT

12

pF