Features 250 Mbps – 2.5 Gbps low jitter operation Optional Fixed Input Equalization Selectable Output De-emphasis Individual Loopback Controls On-chip Termination +3.3V supply Lead-less eLLP-60 pin package (9mmx9mmx0.8mm, 0.5mm pitch) −40°C to +85°C Industrial Temperature Range 6 kV ESD Rating, HBM Description The DS25BR400 is a quad 250 Mbps – 2.5 Gbps CML transceiver, or 8-channel buffer, for use in backplane and cable applications. With operation down to 250 Mbps, the DS25BR400 can be used in applications requiring both low and high frequency data rates. Each input stage has a fixed equalizer to reduce ISI distortion from board traces. The equalizers are enabled through two control pins. These control pins provide flexibility in applications where ISI distortion may vary from one direction to another. All output drivers have four selectable steps of de-emphasis to compensate for transmission loss. The de-emphasis blocks are also grouped in fours. In addition, the DS25BR400 also has loopback control capability on four channels. All the CML drivers have 50Ω termination to Vcc. All receivers are internally terminated with differential 100Ω. Applications Backplane or cable driver Signal buffering and repeating

Typical Application *click for larger image	Connection Diagram *click for larger image
Typical Performance *click for larger image De-Emphasis Waveshape

Datasheets

Title		Size	Date	Other Language
	DS25BR400 Quad 2.5 Gbps CML Transceiver withTransmit De-Emphasis and Receive Equalization	319 Kbytes	24-Feb-09	日本語

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
DS25BR400TSQ/NOPB DS25BR400TSQ RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty AVNET-EM Worldwide 250 DIGI-KEY Worldwide 617 MOUSER Worldwide 250	$4.15 each at 100+ pcs	reel of 250

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 DS25BR400.

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 DS25BR400 is located at RoHS Status.

Part Number(s) (NSID)	Weight (milligrams)	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format
DS25BR400TSQ/NOPB DS25BR400TSQ	224.792 225.803	LLP	60	3 3	260 260	Detail	Download	N/A	NS UZXYTTE# DS25BR400 TSQ

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 DS25BR400.

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 DS25BR400 is located at RoHS Status.

CAD Symbols and Models Download DS25BR400 CAD Symbols

Models N/A

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
DS25BR400TSQ	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 DS25BR400.

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 DS25BR400 is located at RoHS Status.