Features • 2:1 multiplexer and 1:2 buffer • 0.25 – 4.25 Gbps fully differential data paths • Fixed input equalization • Programmable output Pre-emphasis • Independent pre-emphasis controls • Programmable loopback modes • On-chip terminations • HBM ESD rating 6 kV on all pins • +3.3V supply • Lead-less LLP-36 package • -40°C to +85°C operating temperature range Description The DS42MB100 is a signal conditioning 2:1 multiplexer and 1:2 fan-out buffer designed for use in backplane redundancy or cable driving applications. Signal conditioning features include input equalization and programmable output pre-emphasis that enable data communication in FR4 backplane up to 4.25 Gbps. Each input stage has a fixed equalizer to reduce ISI distortion from board traces. All output drivers have four selectable levels of Pre-emphasis to compensate for transmission losses from long FR4 backplane or cable attenuation reducing 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 100Ω differential terminating resistors. All driver outputs are internally terminated with 50Ω terminating resistors to VCC. Applications • Backplane driver or cable driver • Redundancy and signal conditioning applications • CPRI/OBSAI

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Datasheet

Title		Size	Date	Other Language
	DS42MB100 4.25 Gbps 2:1/1:2 CML Mux/Buffer with Transmit Pre-Emphasis and Receive Equalization	333 Kbytes	2-Mar-09	日本語

Featured Application Notes

Title		Size	Date	Other Language
	AN-1399: Application Note 1399 Enabling Redundancy in Multi-Gigabit Links with DS40MB200 Mux/Buffer	1440 Kbytes	17-Oct-05	日本語 中文
	AN-1398: Application Note 1398 Printed Circuit Board Design Techniques for DS40MB200	1007 Kbytes	21-Oct-05	日本語 中文
	AN-1389: Application Note 1389 Setting Pre-Emphasis Level for DS40MB200 Dual 4Gb/s Mux/Buffer	1646 Kbytes	21-Oct-05	日本語 中文

More Application Notes

Title		Size	Date	Other Language
	AN-514: Application Note 514 Timing Analysis of Synchronous and Asynchronous Buses	153 Kbytes	2-Mar-99	日本語

Design Tools

Title	Size	Date
DS42MB100EVK Signal Conditioning Mux-Buffer Demo Board User Guide	426 Kbytes	24-Apr-2008

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
DS42MB100TSQ	BICMOS8	2	14113	142	0	1677500	3	475995205

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

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