USB2503A datasheet(33/42 Pages) MICROCHIP

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 2007 - 2016 Microchip Technology Inc.

DS000002249A-page 33

USB2503/USB2503A

Note 1:

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

See USB 2.0 Specification for USB DC electrical characteristics.

RBIAS is a 3.3V tolerant analog pin.

CAPACITANCE TA = 25°C; fc = 1MHz; VDD33CR = 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.

IO-U

(Note 2)

I-R

(Note 3)

Supply Current Unconfigured

High-Speed Host

Full-Speed Host

ICCINIT

100

Supply Current

Configured

(High-Speed Host)

2 Ports @ FS/LS

2 Ports @ HS

1 Port HS, 1 Port FS/LS

3 Ports @ HS

IHCC2

IHCH2

IHCH1C1

IHCH3

190

235

215

265

Total from all supplies

Supply Current

Configured

(Full-Speed Host)

1 Port

2 Ports

3 Ports

IFCC1

IFCC2

IFCC3

150

155

160

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 7-1:

DC ELECTRICAL CHARACTERISTICS (CONTINUED)

Parameter

Symbol

MIN

TYP

MAX

Units

Comments

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