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PI49FCT20807

1-10 Clock Buffer for Networking Applications

Pericom Semiconductor 

PI49FCT20807

1-10 Clock Buffer for

Networking Applications 1122334455667788990011223344556677889900112233445566778899001122112233445566778899001122334455667788990011223344556677889900112211223344556677889900112233445566778899001122334455667788990011221122334455667788990011223344556677889900112233445566778899001122112233445566778899001122

Switching Waveforms

Propagation Delay

Input

Output

tPLH

tR

2.5V

1.25V

0V

tPHL

VOH

1.7V

1.25V

0.7V

VOL

tF

Output Skew – tSK(O)

Input

tPLHx

CLKx

tSK(o)

CLKy

tPLHy

2.5V

1.25V

tPHLx

0V

VOH

1.25V

VOL

tSK(o)

VOH

1.25V

VOL

tPHLy

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

Pulse Skew – tSK(P)

Input

tPLH

tPHL

Output

tSK(p) = | tPHL – tPLH |

Package Skew – tSK(T)

2.5V

1.25V

0V

VOH

1.25V

VOL

Input

tPLH1

Package 1

Output

tSK(t)

Package 2

Output

tPLH2

2.5V

1.25V

tPHL1

0V

VOH

1.25V

VOL

tSK(t)

VOH

1.25V

VOL

tPHL2

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

Packaging Mechanical: 20-Pin SOIC (S)

20

1

.496 12.60

.511 12.99

.020

.030

0.508

0.762

REF

.2914 7.40

.2992 7.60

0-8˚

.0926 2.35

.1043 2.65

SEATING

PLANE

.010

.029

0.254

0.737

x 45˚

0.41 .016

1.27 .050

.394

.419

10.00

10.65

.0091 0.23

.0125 0.32

.050

BSC

1.27

.013

.020

0.33

0.51

.0040 0.10

.0118 0.30

X.XX DENOTES CONTROLLING

X.XX DIMENSIONS IN MILLIMETERS

4

PS8558B 09/24/04

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