Single-Chip Front-End DOCSIS® 2.0+ IC High-Definition Set-top Box (STB) IC

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The Broadcom BCM3255 Set-top Box (STB) chip with integrated channel bonding combines several DOCSIS® channels together to significantly increase data rates.
Broadcom's BCM3255 chip supports up to 120 megabits-per-second (Mb/s) downstream data rates, enabling next-generation media centers to support an all-IP network platform. Moving to an all IP-based platform for voice, video and data content helps to decrease network operating costs while enabling the network to support fast high-definition video downloads, high-bit-rate services and other IP voice and video services.


  • Three QAM in-band demodulators
  • OOB (Out-of-Band) demodulator for support of DSV 178 and DVS 167
  • Bill-of-materials (BOM) savings resulting from integration enable lower overall STB cost
  • North America and international markets enable single design for worldwide deployment


  • IPTV
  • Set-Top Boxes

Lifecycle Status


Specification Value
Lifecycle Active
Distrib. Inventory No


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