DS25MB200_14 Datasheet, PDF (1/17 Pages) Texas Instruments – Dual 2.5 Gbps 2:1/1:2 CML Mux/Buffer with Transmit Pre-Emphasis and Receive Equalization

DS25MB200
www.ti.com
SNLS220F – MARCH 2006 – REVISED FEBRUARY 2009
DS25MB200 Dual 2.5 Gbps 2:1/1:2 CML Mux/Buffer with Transmit Pre-Emphasis and
Receive Equalization
Check for Samples: DS25MB200
FEATURES
1
•2 0.6–2.5 Gbps low jitter operation
• Fixed input equalization
• Programmable output pre-emphasis
• Independent switch and line side pre-
emphasis controls
• Programmable switch-side loopback modes
• On-chip terminations
• HBM ESD rating 6 kV on all pins
• +3.3V supply
• Lead-less LLP-48 package (7mm x 7mm x
0.8mm, 0.5mm pitch)
• —40°C to +85°C operating temperature range
DESCRIPTION
The DS25MB200 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 2.5 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 V_CC.
Applications
• Backplane or cable driver
• Redundancy and signal conditioning applications
1
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2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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