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Dual 4.0 Gbps 2:1/1:2 CML Mux/Buffer with Transmit Pre-Emphasis and Receive Equalization


Package | PIN: NJU | 48
Temp: I (-40 to 85)
Carrier: Cut Tape
Qty Price
1-9 $10.18
10-24 $9.46
25-99 $9.13
100-249 $7.98
250-499 $7.59
500-749 $6.99
750-999 $6.27
1000+ $6.25


  • 1-Gbps to 4-Gbps Low Jitter Operation
  • Fixed Input Equalization
  • Programmable Output Pre-Emphasis
  • Independent Switch and Line Side Pre-Emphasis
  • Programmable Switch-Side Loopback Mode
  • On-Chip Terminations
  • 3.3-V Supply
  • ESD Rating of 6-kV HBM
  • 48-leadless WQFN Package (7 mm × 7 mm)
  • 0°C to +85°C Operating Temperature Range

Texas Instruments  DS40MB200SQ/NOPB

The DS40MB200 device is a dual signal conditioning 2:1 multiplexer (MUX) and 1:2 fan-out buffer designed for use in backplane-redundancy applications. Signal conditioning features include continuous time linear equalization (CTLE) and programmable output pre-emphasis, extending data communication in FR4 backplanes at rates up to 4 Gbps. Each input stage has a fixed equalizer to reduce intersymbol interference distortion from board traces.

All output drivers have four selectable steps of pre-emphasis to compensate for transmission losses from long FR4 backplanes and reduce deterministic jitter. The pre-emphasis levels can be independently controlled for the line-side and switch-side drivers. The internal loopback paths from switch-side input to switch-side output enable at-speed system testing. All receiver inputs are internally terminated with 100-Ω differential terminating resistors. All drivers are internally terminated with 50 Ω to VCC.