7

PS8961D

12/10/12

PI3L720

2:1 Mux/DeMux Gigabit Ethenet

LAN Switch with Power-down Mode

Voltage Waveforms Propagation Delay Times

Switching Waveforms

Voltage Waveforms Enable and Disable Times

Data In

Data Out

at Channel X

Data Out

at Channel Y

tPLHX

tPHLX

3.5V

2.5V

2.5V

2.5V

I

tSK(o) = I tPLHy – tPLHx I or I tPHLy – tPHLx I

tSK(o)

tPLHy

tPHLy

VOH

VOL

VOL

VOH

1.5V

Input

Output

tPLH

tSK(p) = I tPHL – tPLH I

tPHL

3.5V

2.5V

2.5V

VOL

VOH

1.5V

tPLZ

1.25V

1.25V

2.5V

VOH

0V

VOL

VDD/2

VDD/2

tPHZ

tPZL

tPZH

Output

Output

VOL +0.3V

VOH –0.3V

VOL

VOH

SEL

Applications Information

Logic Inputs

The logic control inputs can be driven up to +3.6V regardless of the supply voltage. For example, given a +3.3V supply, the output

enables or select pins may be driven low to 0V and high to 3.6V. Driving IN Rail-to-Rail® minimizes power consumption.

Power-Supply Sequencing

the input/output or control pins.

Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd

Input

2.5V

2.5V

2.5V

2.5V

3.5V

1.5V

Output

Notes:

Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.

Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.