Features 2:1 multiplexer and 1:2 buffer 0.25–2.5 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 Low power, 0.45 W typical Lead-less LLP-36 package −40°C to +85°C operating temperature range Description The DS25MB100 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 2.5 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 to VCC. Applications Backplane or cable driver Redundancy and signal conditioning applications CPRI/OBSAI

	Block Diagram click for larger image

Parameters Values MUX-BUFF Function 2:1 & 1:2 Channels 1 Channels Max Speed 2.5 Gbps IN SigCon EQ OUT SigCon Pre-E Input Compatibility CML Output Compatibility CML Power Consumption_ 450 mW PowerWise Rating 4 180 mW/Gbps Special Features Loopback Temperature Min -40 deg C Temperature Max 85 deg C SupplyVoltage 3.3 Volt JTAG1149.1 No Function Mux Buffer Protocol Gen. Purpose

Datasheets

Title		Size	Date	Other Language
	DS25MB100 2.5 Gbps 2:1/1:2 CML Mux/Buffer with Transmit Pre-Emphasis and Receive Equalization	334 Kbytes	24-Feb-09	日本語

Application Notes

Title		Size	Date	Other Language
	AN-1821: Application Note 1821 CPRI Repeater System	1497 Kbytes	15-May-08

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
DS25MB100TSQ/NOPB RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty AVNET-EM Worldwide 1500 CEAC Asia Pacific 6750 DIGI-KEY Worldwide 617 MOUSER Worldwide 245	$4.75 each at 1K+ pcs	reel of 250
DS25MB100TSQE RoHS Status	LLP	Full production Lead Time: 16 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$4.75 each at 1K+ pcs	reel of 250
DS25MB100TSQX/NOPB RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$4.75 each at 1K+ pcs	reel of 2500

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 DS25MB100.

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 DS25MB100 is located at RoHS Status.

Part Number(s) (NSID)	Description	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
DS25MB100-EVK	2.5 Gb/s 1:2 Mux/Buffer with Input Equalization and Output De-Emphasis	Preliminary	Distributor Region Qty	$250.00 each	1
Description: The DS25MB100 is a signal conditioning 2:1 multiplexer and 1:2 fan-out buffer designed for use in backplane redundancy or cable driving applications. Features: 2:1 multiplexer and 1:2 buffer 0.25?2.5 Gbps fully differential data paths Fixed input equalization Programmable output de-emphasis Independent de-emphasis controls Programmable loopback modes On-chip terminations HBM ESD rating 5.5 kV on all pins +3.3V supply Low power, 0.45 W typical Lead-less LLP-36 package −40°C to +85°C operating temperature range Applications: Backplane driver or cable driver Redundancy and signal conditioning applications PCI Express Serial ATA CPRI/OBSAI

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
DS25MB100TSQ/NOPB	93.079	LLP	36	3	260	Detail	N/A	N/A	NS UZXYTTE# 25MB100
DS25MB100TSQE	93.079	LLP	36			Detail	N/A	N/A	NS UZXYTTE# 25MB100
DS25MB100TSQX/NOPB	93.079	LLP	36	3	260	Detail	N/A	N/A	NS UZXYTTE# 25MB100

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 DS25MB100.

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 DS25MB100 is located at RoHS Status.

Design Tools

Title	Size	Date
DS25MB100EVK Signal Conditioning Mux-Buffer Demo Board User Guide

CAD Symbols and Models N/A

Models N/A

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
DS25MB100TSQ	BICMOS8	2	15238	132	0	1812500	2	514301823
DS25MB100TSQE	BICMOS8	2	15238	132	0	1812500	2	514301823
DS25MB100TSQX	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 DS25MB100.

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 DS25MB100 is located at RoHS Status.

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Designing Long-Reach Applications with DVI, HDMI, and PCI Express Cable Standards Date: 2007-02-27 Length: 00:40:54