LMK61E08-SIAR

Overview

The LMK61E08-SIAR is an ultra-low jitter programmable oscillator manufactured by Texas Instruments. It operates within a frequency range of -40°C to 85°C and utilizes a 6-pin QFM (SIA) surface-mount package. The device features internal EEPROM for configuration storage and supports LVPECL differential output types. Key electrical characteristics include a maximum rise and fall time of 0.2 ns, an output load of 150 ohms, and a maximum slew rate of 208 mA. The physical dimensions are specified as 7.1mm x 5.1mm x 1.15mm.

Feature Summary

• Ultra-low jitter performance for high-speed signal integrity
• Internal EEPROM enables non-volatile configuration retention
• Differential LVPECL output interface with enable/disable functionality

Applications

• High-speed serial communication transceivers
• Clock distribution networks in data center infrastructure
• Test and measurement equipment requiring precise timing references

Procurement Notes

Verify the specific ordering suffix matches the required package variant and temperature grade. Confirm that the internal EEPROM programming requirements align with system design constraints. Ensure compatibility with LVPECL load specifications and power supply voltage levels before integration into final assemblies.

Selection Notes

Select this component when ultra-low jitter is critical for system performance. Consider the internal EEPROM feature for applications requiring persistent configuration without external memory. Evaluate the 6-pin QFM package size against available PCB real estate and thermal management requirements for dense layouts.

Part Context

This part belongs to the LMK61 series of ultra-low jitter oscillators from Texas Instruments. It shares the core architecture with variants like the LMK61E0-155M52SIAR but differs in its programmability and fixed frequency options. The series is designed for demanding clocking applications where phase noise and jitter performance are paramount.

Replacement Considerations

Direct substitutes may include other LMK61 series parts with compatible pinouts and electrical characteristics. Verify that alternative components support the same LVPECL output type and internal EEPROM functionality to ensure seamless integration without circuit redesign.