Networking Clock Synthesizer

MDS 448-16 E

5

Revision 031605

ICS448-16

AC Electrical Characteristics

Unless stated otherwise, VDD = 3.3 V ±5%, Ambient Temperature 0 to +70

°C

Note 1: Measured with a 15 pF load.

Thermal Characteristics

Marking Diagram

Notes:

1. ###### is the lot code.

2. YYWW is the last two digits of the year, and the week

number that the part was assembled.

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Units

Input Frequency

25

MHz

Output Rise Time

20% to 80%, Note 1

1

ns

Output Fall Time

80% to 20%, Note 1

1

ns

Output Clock Duty Cycle

at VDD/2, Note 1

45

50

55

%

Absolute Clock Period Jitter

Note 1

±150

ps

Frequency Synthesis Error

All clock outputs

0

ppm

Startup Time

1

2

ms

Output Enable Time

PDTS high to output

locked to ±1%

20

µs

Output Disable Time

PDTS low to tri-state

2

ns

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Units

Thermal Resistance Junction to

Ambient

θ

JA

Still air

78

°C/W

θ

JA

1 m/s air flow

70

°C/W

θ

JA

3 m/s air flow

68

°C/W

Thermal Resistance Junction to Case

θ

JC

37

°C/W

1

8

9

16

448R-16

######

YYWW