Micrel, Inc.

SY89859U

February 2007

M9999-022007-B

7

AC Electrical Characteristics

(7)

otherwise stated.

Symbol

Parameter

Condition

Min

Typ

Max

Units

2.5

Gbps

Maximum Operating Frequency

2.5

3.5

GHz

360

475

640

ps

Differential Propagation Delay

IN-to-Q

SEL-to-Q

200

600

850

ps

IN-to-Q

300

Tempco

Differential Propagation Delay

Temperature Coefficient

SEL-to-Q

400

fs/

Output-to-Output Skew

Note 8

5

20

ps

Part-to-Part Skew

Note 9

200

ps

Data

Random Jitter (RJ)

Note 10

1

Deterministic Jitter (DJ)

Note 11

10

Clock

Cycle-to-Cycle Jitter

Note 12

1

Total Jitter (TJ)

Note 13

10

Adjacent Channel Crosstalk-induced Jitter

Note 14

0.7

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

At full output swing.

50

110

180

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 input 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 at 2.5Gbps with both K28.5 and 2

output signal.

than the specified peak-to-peak jitter value.

14. Crosstalk-induced jitter is defined as the added jitter that results from signals applied to two adjacent channels. It is measured at the output

while applying two similar, differential clock frequencies that are asynchronous with respect to each other at the inputs.

Single-Ended and Differential Swings

Figure 1a. Single-Ended Voltage Swing

Figure 1b. Differential Voltage Swing