SY89546U 2.5V, 3.2Gbps Differential 4:1 LVDS Multiplexer with 1:2 Fanout and Internal Termination General Description Features The SY89546U is a precision, High-speed 4:1 differential Selects among four differential inputs multiplexer that provides two copies of the selected input. Provides two copies of the selected input The high speed LVDS (350mV) compatible outputs with a Guaranteed AC parameters over temp/voltage: guaranteed throughput of up to 3.2Gbps over temperature DC-to>3.2Gbps data rat throughput and voltage. <620ps In-to-Out t pd <150ps t /t time r f The SY89546U differential inputs include Micrels unique Unique input isolation design minimize crosstalk 3-pin internal termination design that allows access to the Ultra-low jitter design: termination network through a VT pin. This feature allows <1ps random jitter the device to easily interface to different logic standards, RMS <10ps deterministic jitter PP both AC- and DC-coupled without external resistor-bias and termination networks. The result is a clean, stub-free, <10ps total jitter (clock) PP low jitter interface solution. <0.7ps corsstalk-induced jitter RMS Internal input termination The SY89546U operates from a single 2.5V supply, and is Unique input termination and VT pin accepts DC- guaranteed over the full industrial temperature range coupled and AC-coupled inputs (LVDS, LVPECL, CML) (40C to +85C). For applications that require a 3.3V supply, consider the SY89547L. Or, for applications that 350mV LVDS output swing only require one differential output, consider the Power supple 2.5V 5% SY89544U or SY89545L. The SY89546U is part of 40C to +85C temperature range Micrels Precision Edge product family. Availabe in 32-pin (5mmx5mm) MLF package Data sheets and support documentation can be found on Applications Micrels web site at: www.micrel.com. SONET/SDH multi-channel select applications Fibre Channel applications GigE application Typical Performance Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel, Inc. SY89546U Functional Block Diagram M9999-0041911-B April 2011 2 hbwhelp micrel.com