PI3L720 datasheet(5/10 Pages) PERICOM

5 / 10 page

PS8961D

12/10/12

PI3L720

2:1 Mux/DeMux Gigabit Ethenet

LAN Switch with Power-down Mode

Notes:

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

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

3. Guaranteed by design.

4. 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.

Switching Characteristics (TA = -40°C to +85°C, VDD = 3.3V ± 10%)

Paramenter

Description

Min.

Typ.(2)

Max.

Units

tPD

Propagation Delay(3,4)

–

0.25

tPZH, tPZL

Line Enable Time - SEL to AN, BN

0.5

–

15.0

tPHZ, tPLZ

Line Disable Time - SEL to AN, BN

0.5

–

5.0

tSK(o)

Output Skew between center port to any other port(3)

–

0.1

0.2

tSK(p)

Skew between opposite transitions of the same output (tPHL - tPLH) (3)

–

0.1

0.2

tON/OFF

Device enable / disable time from PD

100

200

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