SY89845U Description
The SY89845U is a low jitter CML, 2:1 differential input multiplexer (MUX) optimized for redundant source switchover applications. Unlike standard multiplexers, the SY89845U unique 2:1 Runt Pulse Eliminator (RPE) MUX prevents any short cycles or “runt” pulses during switchover. In addition, a unique Fail-Safe Input protection prevents metastable conditions when the selected input clock fails to a DC voltage (voltage...
SY89845U Key Features
- Selects between two sources, and provides a glitchfree, stable CML output
- Guaranteed AC performance over temperature and supply voltage
- Wide operating frequency: 1kHz to >1.5GHz
- < 840ps In-to-Out tpd
- < 80ps tr/tf
- Unique, patent-pending input isolation design minimizes crosstalk
- Fail-Safe Input prevents oscillations
- Ultra-low jitter design
- <1psRMS random jitter
- <1psRMS cycle-to-cycle jitter
SY89845U Applications
- Selects between two sources, and provides a glitchfree, stable CML output