I537-5O8-21.500MHZ

Oscillators Overview

The I537-5O8-21.500MHZ is a temperature-compensated crystal oscillator (TCXO) manufactured by ILSI America, operating at a nominal frequency of 21.5 MHz. It utilizes a 4-SMD, No Lead package with dimensions typically associated with the I537 series, such as 2.5 mm x 3.2 mm or similar compact footprints depending on specific variant configurations. The device provides a clipped sine wave output level and supports HCMOS logic levels. Key electrical parameters include a supply voltage range centered around 2.8V to 3.3V, with a maximum supply current of 2 mA. Frequency stability is specified at ±1.5 ppm over the operating temperature range, ensuring high precision for timing applications.

Oscillators Feature Summary

• Low jitter, non-PLL based output generation
• Compatible with lead-free processing standards
• Available in both clipped sine wave and HCMOS output levels

Oscillators Applications

• Server and storage systems
• Sonet/SDH networks
• 802.11/WiFi infrastructure
• T1/E1 and T3/E3 transmission lines
• Fibre Channel interfaces

Oscillators Procurement Notes

Verify the exact package dimensions and pinout configuration against the official ILSI datasheet for the specific suffix code, as physical footprint variations may exist within the I537 family. Confirm that the required output type matches the ordered part number, as some variants may differ in output waveform availability. Ensure compatibility with the target system's supply voltage and load requirements before finalizing procurement orders.

Oscillators Selection Notes

Select this component when precise frequency stability of ±1.5 ppm is required in a compact surface-mount form factor. It is suitable for designs needing low power consumption with a maximum current draw of 2 mA. Consider the available output options, specifically the clipped sine wave or HCMOS levels, to match the input requirements of downstream clock distribution circuits or microcontrollers.

Oscillators Part Context

This part belongs to the ILSI I537 series of TCXOs, designed for high-performance timing applications. The series is characterized by its ceramic package construction and low phase noise performance. It is engineered to meet the stringent timing requirements of modern digital communication protocols and data center infrastructure, offering reliability in demanding thermal environments.

Oscillators Replacement Considerations

Direct substitutes within the same ILSI family should be checked for identical frequency and stability specifications. Cross-referencing with other manufacturers requires careful verification of pin compatibility, voltage levels, and jitter performance metrics to ensure functional equivalence in the target circuit design.