PI3USB20LE datasheet(3/6 Pages) PERICOM

3 / 6 page

PI3USB20

3.3V, Wide Bandwidth, 4-Channel,

2:1 Mux/DeMux USB 2.0 Switch

PS8697B

02/01/05

Notes:

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

2. Typical values are at VCC = 3.3V, TA = 25C ambient and maximum loading.

3. Per TTL driven input (control inputs only); A and B pins do not contribute to ICC.

Notes:

1. For max. or min. conditions, use 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 0.25ns for 10pF 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.

Power Supply Characteristics

Parameters

Description

Test Conditions(1)

Min.

Typ.(2)

Max.

Units

ICC

Quiescent Power Supply Current

VCC = Max., VIN = GND or VCC

800

µA

Dynamic Electrical Characteristics Over the Operating Range

(TA = –40°C to +85°C, VCC = 3.3V ±10%, GND = 0V)

Parameters

Description

Test Conditions

Min.

Typ.(1)

Max.

Units

XTALK

Crosstalk

RL = 100Ω, f = 250 MHz

-27

OIRR

OFF Isolation

-32

Bandwidth -3dB

RL = 100Ω

500

MHz

Switching Characteristics

Parameters

Description

Test

Conditions

Min.

Typ.(1) Max. Units

tPD

Propagation Delay(2,3)

0.25

tPZH, tPZL Line Enable Time - SEL to YN, NI0, IN

0.5

15.0

tPHZ, tPLZ Line Disable Time - SEL to YN, NI0, IN

0.5

9.0

tSK(o)

Output Skew between center port to any other port(2)

0.1

0.2

tSK(p)

Skew between opposite transitions of the same output (tPHL

- tPLH) (2)

0.1

0.2

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