SY89846U Description
The SY89846U is a 2.5/3.3V, 1:5 LVPECL fanout buffer with a 2:1 differential input multiplexer (MUX). A unique Fail-Safe 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 significantly below 100mV). The differential input includes Micrel’s unique, 3-pin internal termination architecture that can...
SY89846U Key Features
- Selects between two inputs, and provides 5 precision LVPECL copies
- Fail-Safe Input
- Prevents outputs from oscillating when input is invalid
- Guaranteed AC performance over temperature and supply voltage
- DC-to >1.5GHz throughput
- < 900ps Propagation Delay (IN-to-Q)
- < 250ps Rise/Fall times
- Ultra-low jitter design
- 150fs RMS phase jitter (Typ)
- 0.7psRMS MUX crosstalk induced jitter