Precision Low Power Differential LVPECL 4:1 MUX with 1:2 Fanout and Internal Termination The SY89855U is a high-speed, low-power differential receiver manufactured by MICREL (now part of Microchip Technology).  

### **Specifications:**  
- **Supply Voltage (VCC):** 3.3V ±10%  
- **Input Voltage Range:** -2V to +4V  
- **Differential Input Threshold:** 50mV (typical)  
- **Propagation Delay:** 400ps (typical)  
- **Maximum Data Rate:** 3.2Gbps  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-pin SOIC  

### **Descriptions and Features:**  
- **High-Speed Operation:** Supports data rates up to 3.2Gbps.  
- **Low Power Consumption:** Typically consumes 50mA at 3.3V.  
- **Differential Inputs:** Compatible with LVPECL, CML, and LVDS signal levels.  
- **Wide Input Voltage Range:** Tolerates input signals from -2V to +4V.  
- **Internal Termination:** Includes on-chip 50Ω termination resistors.  
- **Applications:** Used in high-speed data communication, clock distribution, and networking equipment.  

For further details, refer to the official datasheet from Microchip Technology (formerly MICREL).

Precision Low Power Differential LVPECL 4:1 MUX with 1:2 Fanout and Internal Termination