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SY89547L Datasheet(PDF) 1 Page - Micrel Semiconductor |
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SY89547L Datasheet(HTML) 1 Page - Micrel Semiconductor |
1 / 11 page 1 Precision Edge® SY89547L Micrel, Inc. M9999-060906 hbwhelp@micrel.com or (408) 955-1690 DESCRIPTION ■ Selects among four differential inputs ■ Provides two copies of the selected input ■ Guaranteed AC performance over temp and voltage: • DC-to > 3.2Gbps data rate throughput • < 620ps In-to-Out tpd • < 150ps tr/tf ■ Unique input isolation design minimizes crosstalk ■ Ultra-low jitter design: • < 1psRMS random jitter • < 10psPP deterministic jitter • < 10psPP total jitter (clock) • < 0.7psRMS crosstalk-induced jitter ■ Internal input termination ■ Unique input termination and V T pin accepts DC- coupled and AC-coupled inputs (LVDS, LVPECL, CML) ■ 350mV LVDS output swing ■ Power supply 3.3V ±10% ■ –40°C to +85°C temperature range ■ Available in 32-pin (5mm x 5mm) MLF™ package FEATURES 3.3V, 3.2Gbps DIFFERENTIAL 4:1 LVDS MULTIPLEXER with 1:2 FANOUT and INTERNAL TERMINATION Precision Edge® SY89547L APPLICATIONS ■ SONET/SDH multi-channel select applications ■ Fibre Channel applications ■ GigE applications Rev.: B Amendment: /1 Issue Date: June 2006 The SY89547L 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 SY89547L 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 SY89547L operates from a single 3.3V supply, and is guaranteed over the full industrial temperature range (–40°C to +85°C). For applications that require a 2.5V supply, consider the SY89546U. For applications that only require one differential output, consider the SY89544U or SY89545L. The SY89547L is part of a Micrel’s Precision Edge® product family. All support documentation can be found on Micrel’s web site at: www.micrel.com. TYPICAL PERFORMANCE FUNCTIONAL BLOCK DIAGRAM Precision Edge® IN0 /IN0 VT0 50Ω 50Ω IN1 /IN1 VT1 50Ω 50Ω Q0 /Q0 0 1 MUX 4:1 MUX 1:2 Fanout LVDS IN2 /IN2 VT2 50Ω 50Ω 2 IN3 /IN3 VT3 50Ω 50Ω 3 S0 S1 SEL0 (CMOS/TTL) SEL1 (CMOS/TTL) Q1 /Q1 Precision Edge is a registered trademark of Micrel, Inc. MicroLeadFrame and MLF are registered trademarks of Amkor Technology. 0 50 100 150 200 250 300 350 400 0 1000 2000 3000 4000 5000 6000 FREQUENCY (MHz) Output Amplitude vs. Frequency |
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