SY89546U_11 Datasheet, PDF (1/14 Pages) Micrel Semiconductor – 2.5V, 3.2Gbps Differential 4:1 LVDS

SY89546U
2.5V, 3.2Gbps Differential 4:1 LVDS
Multiplexer with 1:2 Fanout and Internal
Termination
General Description
The SY89546U is a precision, High-speed 4:1 differential
multiplexer that provides two copies of the selected input.
The high speed LVDS (350mV) compatible outputs with a
guaranteed throughput of up to 3.2Gbps over temperature
and voltage.
The SY89546U differential inputs include Micrel’s unique
3-pin internal termination design that allows access to the
termination network through a VT pin. This feature allows
the device to easily interface to different logic standards,
both AC- and DC-coupled without external resistor-bias
and termination networks. The result is a clean, stub-free,
low jitter interface solution.
The SY89546U operates from a single 2.5V supply, and is
guaranteed over the full industrial temperature range
(–40°C to +85°C). For applications that require a 3.3V
supply, consider the SY89547L. Or, for applications that
only require one differential output, consider the
SY89544U or SY89545L. The SY89546U is part of
Micrel’s Precision Edge® product family.
Features
• Selects among four differential inputs
• Provides two copies of the selected input
• Guaranteed AC parameters over temp/voltage:
– DC-to>3.2Gbps data rat throughput
– <620ps In-to-Out t_pd
– <150ps t_r/t_f time
• Unique input isolation design minimize crosstalk
• Ultra-low jitter design:
– <1ps_RMS random jitter
– <10ps_PP deterministic jitter
– <10ps_PP total jitter (clock)
– <0.7ps_RMS corsstalk-induced jitter
• Internal input termination
• Unique input termination and VT pin accepts DC-
coupled and AC-coupled inputs (LVDS, LVPECL,
CML)
• 350mV LVDS output swing
• Power supple 2.5V ±5%
• –40°C to +85°C temperature range
• Availabe in 32-pin (5mmx5mm) MLF® package
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Applications
• SONET/SDH multi-channel select applications
• Fibre Channel applications
• GigE application
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Typical Performance
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel [phone] • fax + 1 [phone] • http://www.micrel.com
April 2011
M9999-041911-B
[e-mail] or [phone]