14-bit Bus Switch MUX for DDR Application

Introducing NXP’s 14-bit bus switch/multiplexer (MUX) designed for 1.5 V or 1.8 V supply voltage operation in DDR2, DDR3 or DDR4 memory bus systems. The CBTW28DD14 multiplex topology offers a 14-bit wide bus. The device uses NXP proprietary high-speed switch architecture providing high bandwidth, very little insertion loss at low frequency, and very low propagation delay, allowing use in many applications requiring switching or multiplexing of high-speed signals.

CBTW28DD14 Functional diagram

CBTW28DD14 Functional diagram

Where used?

  • DDR2/DDR3/DDR4 memory bus systems
  • Systems requiring high-speed multiplexing

Why use?

  • Bidirectional operation
  • 1 : 2 switch/MUX topology
  • 2.5 GHz bandwidth
  • Low ON insertion loss
  • Low crosstalk
  • High OFF isolation
  • 1.5 V or 1.8 V supply voltage operation
  • Very low supply current (300 A typical)
  • ESD robustness exceeds 3 kV HBM, 1 kV CDM
  • Available in TFBGA48 package


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