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PI49FCT20803

1:5/1:7 2.5V Clock Buffer for Networking Applications

Pericom Semiconductor Corporation 

PI49FCT20802/PI49FCT20803

1:5/1:7 2.5V Clock Buffer for

Networking Applications 1122334455667788990011223344556677889900112233445566778899001122112233445566778899001122334455667788990011223344556677889900112211223344556677889900112233445566778899001122334455667788990011221122334455667788990011223344556677889900112233445566778899001122112233445566778899001122

Switching Waveforms

Propagation Delay

Pulse Skew – tSK(P)

Input

Output

tPLH

tR

3V

1.25V

0V

tPHL

VOH

2.0V

1.25V

0.6V

VOL

tF

Input

tPLH

tPHL

Output

tSK(p) = | tPHL – tPLH |

3V

1.5V

0V

VOH

1.5V

VOL

Output Skew – tSK(O)

Input

tPLHx

CLKx

tSK(o)

CLKy

tPLHy

3V

1.5V

tPHLx

0V

VOH

1.5V

VOL

tSK(o)

VOH

1.5V

VOL

tPHLy

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

Package Skew – tSK(T)

Input

tPLH1

Package 1

Output

Package 2

Output

tSK(t)

tPLH2

3V

1.5V

tPHL1

0V

VOH

1.5V

VOL

tSK(t)

VOH

1.5V

VOL

tPHL2

tSK(t) =  tPLH2 – tPLH1 or  tPHL2 – tPHL1

5

PS8560A 09/27/04

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