UPDATE 2-ON Semiconductor Q3 beats estimates, sees strong Q4 rev

* Q3 adj EPS $0.16 vs est $0.10

* Revenue falls 19 pct

* Sees Q4 rev $480 mln-$495 mln vs est $468.3 mln

* Shares up 4 pct in post-market trade (Recasts; Adds analyst comments and conference call details)

By Manasi Phadke

BANGALORE, Nov 4 (Reuters) - Chipmaker ON Semiconductor Corp (ONNN.O: Quote, Profile, Research) posted a quarterly profit that handily beat estimates, helped partly by strength in its end markets, and forecast fourth-quarter revenue above Wall Street expectations.

The company, which makes energy efficient chips for computers, satellite radios, cell phones and set-top boxes, forecast fourth-quarter revenue of $480 million to $495 million.

Analysts were expecting revenue of $468.3 million, according to Thomson Reuters I/B/E/S.

"The fourth quarter of 2009 should represent the first quarter we should see year-over-year revenue growth in our analog end market since the recession began," Chief Executive Keith Jackson said on a conference call.