PI3USB32 datasheet(4/11 Pages) PERICOM

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PI3USB32

High-Speed USB 2.0 (480 Mbps)

1-port Switch with Full Power Down Feature

PS9010B

03/25/10

Dynamic Electrical Characteristics (over operating range, TA = –40°C TO 85°C, VDD = 3.3 V ± 10%, GND = 0 V)

Parameter

Description

Test Conditions(1)

Typ.(1)

Units

OIRR

OFF isolation

RL = 50-Ohms, f = 240 MHz

-30

Bandwidth (-3 dB)

RL = 50-Ohms

2110

MHz

Xtalk

Crosstalk

RL =50-Ohms, f = 240 MHz

-55

Notes:

1. For Max or Min conditions, use the appropriate value specified under Electrical Characteristics for the applicable device type.

Switching Characteristics (over operating range, TA = –40°C TO 85°C, VDD = 3.3 V ± 10%, GND = 0 V)

Parameters

Description

Test Conditions (1)

Min.

Typ.

Max. Units

tPD

Propagation Delay(2,3)

RL = 50 W, CL = 5 pF

0.35

tON

Line Enable Time, OE to D+/D-

RL = 50 W, CL = 5 pF

tOFF

Line Disable Time - OE to D+/D-

RL = 50 W, CL = 5 pF

tSK(P)

Skew between opposite transitions of the same output

(tPHL - tPLH)2

RL = 50 W, CL = 5 pF

Total Jitter2

RL = 50 W, CL = 5

pF, tR = tF = 500 ps

at 480 Mbps (PBRS=

215 - 1)

200

Notes:

1. For Max or Min conditions, use the appropriate value specified under Electrical Characteristics for the applicable device type.

2. Guaranteed by design.

3. The bus switch contributes no propagational delay other than the RC delay of the on resistance of the switch and the load capacitance.

The time constant for the switch alone is of the order of 0.25 ns for 10-pF load. Since this time constant is much smaller than the rise/fall

times of typical driving signals, it adds very little propagational delay to the system. Propagational delay of the bus switch, when used in

a system, is determined by the driving circuit on the driving side of the switch and its interactions with the load on the driven side.

10-0146

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