SY89808LTG

Clock Buffers, Drivers Overview

The SY89808LTG is a high-performance bus clock driver featuring nine differential HSTL (1.5V compatible) output pairs. Designed for low-voltage applications, it operates with a 3.3V core supply and an 1.8V output supply to minimize power consumption. The device supports a maximum clock frequency of 500MHz and accepts inputs from either HSTL or LVPECL sources via the CLK_SEL pin. It provides ultra-low pin-to-pin skew of less than 25ps and includes a triple-buffered synchronous enable function to prevent runt clock pulses. The component is housed in a 32-pin TQFP package and is rated for industrial temperatures ranging from -40°C to +85°C.

Clock Buffers, Drivers Feature Summary

• Nine differential HSTL (1.5V compatible) output pairs
• Maximum operating frequency of 500MHz
• Ultra-low pin-to-pin skew of 25ps maximum
• Triple-buffered synchronous Output Enable (OE)
• Multiplexed input selection between HSTL and LVPECL

Clock Buffers, Drivers Applications

• Workstations
• Parallel processor-based systems
• High-performance computing
• Communications equipment

Clock Buffers, Drivers Procurement Notes

Verify that the specific order contains the 'G' suffix to confirm the Pb-Free NiPdAu lead finish variant. Confirm the package type matches the 32-lead TQFP (T32-1) specification. Ensure design compliance with the recommended 3.3V core and 1.8V output supply voltages. Check for the 'Not Recommended for New Designs' status if applicable to long-term availability requirements.

Clock Buffers, Drivers Selection Notes

Select this component when a large number of precisely aligned outputs are required for low-voltage logic interfaces. The dual-input capability allows flexibility in choosing between HSTL and LVPECL source signals. Ensure the application can accommodate the separate 3.3V and 1.8V power domains. Verify that the 32-pin TQFP footprint fits the board layout constraints.

Clock Buffers, Drivers Part Context

This part belongs to the Precision Edge family of clock drivers manufactured by Micrel, which was acquired by Microchip Technology. The SY89808L serves as a fanout buffer and translator, converting single-ended or differential inputs into multiple differential outputs. It is distinct from similar models like the SY89809L or SY89823L based on its specific 1:9 output configuration and voltage levels.

Clock Buffers, Drivers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.