Micrel, Inc.

SY54020R

April 2009

6

M9999-041409-A

AC Electrical Characteristics

Symbol

Parameter

Condition

Min

Typ

Max

Units

NRZ Data

3.2

Gbps

Maximum Data Rate/ Frequency

clock

2.5

GHz

Propagation Delay

IN-to-Q

200

240

300

360

400

490

ps

Setup Time

/EN

150

ps

Hold Time

/EN

250

ps

Output-to-Output skew

Note 7

5

20

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

Output Rise/Fall Times

(20% to 80%)

Input <300mV

35

60

100

ps

Duty Cycle

Differential I/O

≤2.5GHz

47

53

%

Notes:

6.

Propagation delay is measured with input tr/tf

≤ 300ps (20 to 80%)

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 of 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.