sy89228u Micrel Semiconductor, sy89228u Datasheet - Page 15

• Manufacturer Part Number: sy89228u
• Description: Sy89228u 1ghz Precision, Lvpecl ? 3, ? 5 Clock Divider With Fail-safe Input And Internal Termination
• Manufacturer: Micrel Semiconductor

PECL Output Interface Applications
PECL has high input impedance, very low output
impedance (open emitter), and a small signal swing
which results in low EMI. PECL is ideal for driving
50Ω- and 100Ω-controlled impedance transmission
lines. There are several techniques for terminating
the PECL output: parallel termination-thevenin
equivalent, parallel termination (3-resistor), and AC-
coupled termination. Unused output pairs may be
left
be terminated, or balanced.
Related Product and Support Documentation
August 2007
Part Number
SY89229U
SY89230U
SY89231U
floating. However, single-ended outputs must
Figure 5a. Parallel Termination-Thevenin
Function
1GHz Precision, LVDS ÷3, ÷5 Clock Divider
with Fail Safe Input and Internal Termination
3.2GHz Precision, LVPECL ÷3, ÷5 Clock
Divider
3.2GHz Precision, LVDS ÷3, ÷5 Clock Divider
MLF
®
Equivalent
Application Note
15
Datasheet Link
http://www.micrel.com/_PDF/HBW/sy89229u.pdf
http://www.micrel.com/_PDF/HBW/sy89230u.pdf
http://www.micrel.com/_PDF/HBW/sy89231u.pdf
www.amkor.com/products/notes_papers/MLFAppNote.pdf
Figure 5b. Parallel Termination
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