Features DC - 125 MHz / 250 Mbps low jitter, low skew, low power operation Independent Driver Enable pins Conforms to TIA/EIA-899 M-LVDS Standard Controlled transition times minimize reflections 8 kV ESD on M-LVDS I/O pins protects adjoining components Flow-through pinout simplifies PCB layout Industrial operating temperature range (−40°C to +85°C) Available in a space saving SOIC-16 package Description The DS91M124 is a 1:4 M-LVDS repeater for driving and distributing clock or data signals to up to four multipoint networks. M-LVDS (Multipoint LVDS) is a new family of bus interface devices based on LVDS technology specifically designed for multipoint and multidrop cable and backplane applications. It differs from standard LVDS in providing increased drive current to handle double terminations that are required in multi-point applications. Controlled transition times minimize reflections that are common in multipoint configurations due to unterminated stubs. A single DS91M124 channel is a 1:4 repeater that accepts LVTTL/LVCMOS signals at the driver inputs and converts them to differential M-LVDS signal levels. It features independent driver enable pins for each driver output. The DS91M124 has a flow-through pinout for easy PCB layout. It provides a new alternative for high speed multipoint interface applications. It is packaged in a space saving SOIC-16 package. Applications Multidrop / Multipoint clock and data distribution High-Speed, Low Power, Short-Reach alternative to TIA/EIA-485/422 Clock distribution in AdvancedTCA (ATCA) and MicroTCA (μTCA) backplanes

Also Recommended DS91M125▲ 1 To 4 M-LVDS Repeater With LVDS Input

Typical Application click for larger image	Connection Diagram click for larger image
Typical Performance *click for larger image Driver Rise time over temperature, Vdd

Parameters / Values	DS91M124	DS91M125
PHY Type	Repeater	Repeater
Family	M-LVDS	M-LVDS
Channels	4 Channels	4 Channels
Max Data Rate	250 Mbps	250 Mbps
Input Compatibility	LVCMOS	LVDS
Output Compatibility	MLVDS	MLVDS
Power Consumption_	215 mW	221 mW
Special Features	Low Skew	Low Skew, 8 kV ESD
SupplyVoltage	3.3 Volt	3.3 Volt
JTAG1149.1	No	No
Temperature Min	-40 deg C	-40 deg C
Temperature Max	85 deg C	85 deg C
Function	1:n Repeater	1:n Repeater

Datasheets

Title		Size	Date	Other Language
	DS91M124 125 MHz 1:4 M-LVDS Repeater with LVCMOS Input	358 Kbytes	9-Nov-09

Application Notes

Title		Size	Date	Other Language
	AN-1926: Application Note 1926 An Introduction to M-LVDS and Clock and Data Distribution Applications	344 Kbytes	4-Dec-08	中文

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
DS91M124TMA/NOPB DS91M124TMA RoHS Status	SOIC NARROW	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 119 FARNELL Europe and Asia 173 MOUSER Worldwide 144 NEWARK Americas 64	$2.20 each at 1K+ pcs	rail of 48
DS91M124TMAX/NOPB DS91M124TMAX RoHS Status	SOIC NARROW	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$2.20 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 DS91M124.

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 DS91M124 is located at RoHS Status.

Part Number(s) (NSID)	Description	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
DS91M124EVK/NOPB	DS91M124EVK Documentation	Preliminary Lead Free (RoHS)	Distributor Region Qty DIGI-KEY Worldwide 0	$195.00 each	1
Description: The DS91M124EVK is an evaluation board design for demonstration of all features and functions of the DS91M124. The board enables users to examine performance and all functions of the DS91M124 as a standalone device. The DS91M124 is a high-speed 1:4 M-LVDS repeater with a LVCMOS input designed for multipoint applications with multiple drivers or receivers. The device conforms to TIA/EIA-899 standard. It utilizes M-LVDS technology for low power, high-speed and superior noise immunity. Documentation: DS91M124EVK User Manual DS91M124EVK Gerber Files Links: DS91M124 Product Folder DS91D176EVK An evaluation kit that enables users to explore M-LVDS performance in ATCA (AdvancedTCA) clock distribution networks DS91M040EVK Another evaluation kit that enables users to explore M-LVDS performance in ATCA (AdvancedTCA) clock distribution networks national.com/LVDS Featured community

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
DS91M124TMA/NOPB DS91M124TMA	139.49 140	SOIC NARROW	16	1 1	260 235	Detail	Download	ibis file	NSUZXYTTE# DS91M124 TMA
DS91M124TMAX/NOPB DS91M124TMAX	139.49 140	SOIC NARROW	16	1 1	260 235	Detail	Download	ibis file	NSUZXYTTE# DS91M124 TMA

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 DS91M124.

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 DS91M124 is located at RoHS Status.

CAD Symbols and Models Download DS91M124 CAD Symbols

Models ibis file

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
DS91M124TMA	CMOS7	0	21301	0	0	1584000	3	449464325
DS91M124TMAX	CMOS7	0	21301	0	0	1584000	3	449464325

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 DS91M124.

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 DS91M124 is located at RoHS Status.