Micrel, Inc.

SY89474U

August 2005

6

M9999-081105

AC Electrical Characteristics

(7)

Symbol

Parameter

Condition

Min

Typ

Max

Units

NRZ Data

2.5

3.2

Gbps

Maximum Operating Frequency

Clock

2.5

4

GHz

220

320

470

ps

Differential Propagation Delay In-to-Q

SEL-to-Q

200

350

550

ps

Tempco

Differential Propagation Delay

Temperature Coefficient

158

fs/

Output-to-Output Skew

Note 8

5

20

ps

Part-to-Part Skew

Note 9

200

ps

Note 10

1

Data

Random Jitter

Deterministic Jitter

Note 11

10

Clock

Cycle-to-cycle Jitter

Note 12

1

Total Jitter

Note 13

10

Crosstalk-Induced Jitter

Note 14

0.7

Output Rise/Fall Time (20% to 80%)

At full output swing.

30

150

ps

Notes:

7.

High-frequency AC-parameters are guaranteed by design and characterization.

8.

Output-to-output skew is measured between two different outputs under identical transitions.

9.

Part-to-part skew is defined for two parts with identical power supply voltages, at the same temperature, and with no skew of the edges at

the respective inputs.

11. Deterministic Jitter is measured with both K28.5 and 2

output signal.

more than the specified peak-to-peak jitter value.

14. Crosstalk is measured at the output while applying two similar differential clock frequencies that are asynchronous with respect to each

other at the inputs.