SY89464U
Precision LVPECL 1:10 Fanout with 2:1 Runt
Pulse Eliminator MUX and Internal Termination
General Description
The SY89464U is a low jitter 1:10 LVPECL fanout
buffer with a 2:1 differential input multiplexer (MUX)
optimized for redundant source switchover
applications. Unlike standard multiplexers, the
SY89464U’s unique 2:1 Runt Pulse Eliminator
(RPE) MUX prevents any short cycles or “runt”
pulses during switchover. In addition, a unique FailSafe Input (FSI) protection prevents metastable
output conditions when the selected input clock fails
to a DC voltage (voltage between the pins of the
differential input drops below 100mV).
The differential input includes Micrel’s unique, 3-pin
internal termination architecture that allows
customers to interface to any differential signal (ACor DC-coupled) as small as 100mV (200mVPP)
without any level shifting or termination resistor
networks in the signal path. The outputs are 800mV,
100K-compatible LVPECL with fast rise/fall times
guaranteed to be less than 220ps.
The SY89464U operates from a 2.5V ±5% or 3.3V
±10% supply and is guaranteed over the full
industrial temperature range of –40°C to +85°C. The
SY89464U is part of Micrel’s high-speed, Precision
®
Edge product line.
All support documentation can be found on Micrel’s
web site at: www.micrel.com.
Precision Edge
®
Features
• Selects between two sources, and provides 10
precision LVPECL copies
• Guaranteed AC performance over temperature and
supply voltage:
– Wide operating frequency: 1kHz to >1.5GHz
– < 1100ps In-to-Out tpd
– < 220ps tr/tf
• Unique, patent-pending MUX input isolation design
minimizes adjacent channel crosstalk
• Fail-Safe Input prevents oscillations
• Ultra-low jitter design:
–
很抱歉,暂时无法提供与“SY89464UMY”相匹配的价格&库存,您可以联系我们找货
免费人工找货