ISM92-3251AH-4.000MHZ

Oscillators Overview

The ISM92-3251AH-4.000MHZ is a surface-mount ceramic package clock oscillator manufactured by ILSI America. It operates at a nominal frequency of 4 MHz with HCMOS/TTL output logic levels compatible with standard digital circuits. The device supports a supply voltage range of 1.71 V to 1.89 V, with a nominal rating of 1.8 V. It features low jitter performance without PLL-based architecture and includes an enable/disable function controlled by voltage thresholds. The component is RoHS compliant, lead-free, and housed in a compact 4-pin SMD footprint measuring 5.0 mm x 3.2 mm.

Oscillators Feature Summary

• Low jitter, non-PLL based output signal generation
• HCMOS and TTL compatible logic level outputs
• Integrated enable and disable functionality via control voltage
• Compatible with lead-free processing standards

Oscillators Applications

• Fibre Channel server and storage systems
• Sonet/SDH network infrastructure
• 802.11 and Wi-Fi communication modules
• T1/E1 and T3/E3 system clocking

Oscillators Procurement Notes

Verify the specific suffix code against the manufacturer's official part number guide to confirm exact electrical characteristics, as variations exist within the ISM92 series. Ensure the selected variant matches the required supply voltage and output load specifications for the target application. Confirm RoHS compliance status through the latest datasheet documentation provided by ILSI America before integration into production designs.

Oscillators Selection Notes

Select this oscillator when a stable 4 MHz reference is required for HCMOS or TTL interfaces in space-constrained designs. The 1.8 V supply requirement dictates compatibility with low-voltage digital logic families. Consider the enable/disable feature if power management during idle states is necessary. Verify that the 50 pF output load specification aligns with the receiving circuit's input capacitance requirements.

Oscillators Part Context

This component belongs to the ISM92 series of ceramic package SMD oscillators from ILSI America. The series offers various frequencies ranging from 1.5 MHz to 125 MHz across different package sizes. The ISM92-3251AH variant specifically denotes the 3.2 mm x 5.0 mm footprint with HCMOS/TTL outputs. This series is designed for high-reliability applications requiring precise timing signals in telecommunications and data storage environments.

Oscillators Replacement Considerations

Direct substitutes include other ISM92 series parts with identical 4 MHz frequency and 1.8 V supply voltage, such as ISM92-3251EH-4.000 if voltage tolerance differs. Cross-reference with ILSI's current product lineup to ensure availability of equivalent pin-compatible alternatives with matching jitter specifications.