SI598 Datasheet, PDF(7/28 Page) Silicon Laboratories – Programmable with 28 parts per trillion frequency resolution

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SI598 Datasheet, PDF (7/28 Pages) Silicon Laboratories – Programmable with 28 parts per trillion frequency resolution

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Si598/Si599

Table 4. CLKÂ± Output Levels and Symmetry

(Typical values TA = 25 ÂºC, VDD = 3.3 V, min/max limits VDD = 1.8 Â±5%, 2.5 or 3.3 V Â±10%, TA = â40 to 85 ÂºC unless otherwise

noted)

Parameter

Symbol

Test Condition

Min

Typ

Max Units

LVPECL Output Option1

VOD

VSE

LVDS Output Option2

VOD

mid-level

swing (diff)

swing (single-ended)

mid-level

swing (diff)

VDD â 1.42

1.1

0.55

1.125

0.5

1.20

0.7

VDD â 1.25 V

1.9

VPP

0.95

VPP

1.275

0.9

VPP

CML Output Option2

2.5/3.3 V option mid-level

1.8 V option mid-level

VDD â 1.30

VDD â 0.36

2.5/3.3 V option swing (diff) 1.10

VOD

1.8 V option swing (diff)

0.35

1.50

0.425

1.90

VPP

0.50

VPP

CMOS Output Option3

VOH

VOL

IOH = 32 mA

IOL = 32 mA

0.8 x VDD

VDD

0.4

LVPECL/LVDS/CML

Rise/Fall Time (20/80 %)

tR, tF

CMOS with CL = 15 pF

350

LVPECL: VDD â 1.3 V (diff)

Symmetry (duty cycle)

SYM LVDS: 1.25 V (diff)

CMOS: VDD/2

Notes:

1. 50 ï to VDD â 2.0 V.

2. Rterm = 100 ï (differential).

3. CL = 15 pF sinking or sourcing 12 mA for VDD = 3.3 V, 6 mA for VDD = 2.5 V, 3 mA for VDD = 1.8 V.

Rev. 1.0

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