Features 1– 4 Gbps low jitter operation Fixed input equalization Programmable output pre-emphasis Independent switch and line side pre-emphasis controls Programmable switch-side loopback mode On-chip terminations +3.3V supply ESD rating HBM 6 kV Lead-less LLP-48 package (7 mm x 7 mm) 0°C to +85°C operating temperature range Description The DS40MB200 is a dual signal conditioning 2:1 multiplexer and 1:2 fan-out buffer designed for use in backplane redundancy applications. Signal conditioning features include input equalization and programmable output pre-emphasis that enable data communication in FR4 backplanes up to 4 Gbps. Each input stage has a fixed equalizer to reduce ISI distortion from board traces. All output drivers have 4 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 100Ω differential terminating resistors. All drivers are internally terminated with 50Ω to VCC. Applications Backplane or cable driver Redundancy and signal conditioning applications XAUI

Also Recommended DS42MB200▲ Dual 4.25 Gb/s 1:2 Mux/Buffer, Industrial Temperature Grade

Typical Application *click for larger image	Block Diagram *click for larger image
Typical Performance *click for larger image

Parameters / Values	DS40MB200	DS42MB200
MUX-BUFF Function	2:1 & 1:2	2:1 & 1:2
Channels	2 Channels	2 Channels
Max Speed	4.0 Gbps	4.25 Gbps
IN SigCon	EQ	EQ
OUT SigCon	Pre-E	Pre-E
Input Compatibility	CML	CML
Output Compatibility	CML	CML
Power Consumption_	1000 mW	1000 mW
PowerWise Rating 4	125 mW/Gbps	118 mW/Gbps
Special Features	Loopback	Loopback
Temperature Min	-40 deg C	-40 deg C
Temperature Max	85 deg C	85 deg C
SupplyVoltage	3.3 Volt	3.3 Volt
JTAG1149.1	No	No
Function	Mux Buffer	Mux Buffer
Protocol	Gen. Purpose	Gen. Purpose

Datasheets

Title		Size	Date	Other Language
	DS40MB200 Dual 4.0 Gbps 2:1/1:2 CML Mux/Buffer with Transmit Pre-Emphasis and Receive Equalization	3128 Kbytes	25-Feb-09	日本語

Application Notes

Title		Size	Date	Other Language
	AN-1541: Application Note 1541 Driving Signals Over XAUI Backplanes Using DS42MB100, DS40MB200, or DS42BR400	49070 Kbytes	17-Mar-07	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
	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

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
DS40MB200SQ/NOPB DS40MB200SQ RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 424 AVNET-EM Worldwide 250 DIGI-KEY Worldwide 1003 MOUSER Worldwide 250 TAYLOR Americas 424	$8.95 each at 100+ pcs	reel of 250
DS40MB200SQE RoHS Status	LLP	Full production Lead Time: 6 weeks	Contact your distributor	CALL	reel of N/A

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for DS40MB200.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for DS40MB200 is located at RoHS Status.

Part Number(s) (NSID)	Description	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
EVK-DS40MB200	EVK-DS40MB200 Evaluation Board	Preliminary	Distributor Region Qty DIGI-KEY Worldwide 0	$250.00 each	1

National Semiconductor follows the provisions of the Product Stewardship Guide for Customers (CSP-9-111C1) and Banned Substances and Materials of Interest Specification (CSP-9-111S2) for regulatory environmental compliance. Details may be found at: www.national.com/en/packaging/greennopb.html. Lead free products are RoHS compliant.

Lead Free product status is available through the search tool located here

Part Number(s) (NSID)	Weight (milligrams)	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format
DS40MB200SQ/NOPB DS40MB200SQ	110.779 111.137	LLP	48	3 3	260 260	Detail	Download	N/A	NS UZXYTTE# 40MB200
DS40MB200SQE		LLP	48			Detail	Download	N/A	NS UZXYTTE# 40MB200

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for DS40MB200.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for DS40MB200 is located at RoHS Status.

Design Tools

Title	Size	Date
DS40MB200EVK User Guide
DS40MB200 Design Resources

CAD Symbols and Models Download DS40MB200 CAD Symbols

Models N/A

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
DS40MB200SQ	BICMOS8	2	15238	132	0	1812500	2	514301823
DS40MB200SQE	BICMOS8	2	15238	132	0	1812500	2	514301823

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.

For more information on Reliability Metrics, please click here.

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for DS40MB200.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for DS40MB200 is located at RoHS Status.

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