Micrel, Inc.

SY54023AR

June 2008

6

M9999-062608-A

AC Electrical Characteristics

Symbol

Parameter

Condition

Min

Typ

Max

Units

NRZ Data

3.2

Gbps

Maximum Frequency

Clock

3.2

GHz

Figure 1a

150

210

310

ps

Propagation Delay

IN-to-Q

SEL-to-Q

Figure 1a

90

200

350

ps

Input-to-Input Skew

Note 6

5

20

ps

Output-to-Output skew

Note 7

3

15

ps

Part-to-Part Skew

Note 8

75

ps

Data

Random Jitter

Note 9

1

Deterministic Jitter

Note 10

10

Clock

Cycle-to-Cycle Jitter

Note 11

1

Total Jitter

Note 12

10

Crosstalk Induced Jitter

(Adjacent Channel)

Note 13

0.7

Output Rise/Fall Times

(20% to 80%)

At full output swing.

30

60

95

ps

Duty Cycle

Differential I/O

47

53

%

Notes:

6.

Input-to-Input skew is the difference in time between both inputs, measured at the same output for the same temperature, voltage and transition.

7.

Output-to-Output skew is the difference in time between both outputs, receiving data from the same input, for the same temperature, voltage and

transition.

8.

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

respective inputs.

9.

Random jitter is measured with a K28.7 pattern, measured at

≤ f

10. Deterministic jitter is measured at 2.5Gbps with both K28.5 and 2

where T is the time between rising edges of the output signal.

12. Total jitter definition: with an ideal clock input frequency of

≤ f

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

13. Crosstalk induced jitter is defined as the added jitter that results from signals applied to the adjacent channel. It is measured at the output while

applying a similar, differential clock frequency to both inputs that is asynchronous with respect to each other.