18QHTF21-109.5575-PD

Overview

The 18QHTF21-109.5575-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 109.5575 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and features a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• Supports low-voltage operation with 1.8V supply
• Includes standby mode for power reduction
• Provides LVCMOS output signal compatibility

Applications

• Digital signal processing systems
• Communication equipment clocking
• Embedded system timing references

Procurement Notes

Verify the specific ordering suffix to ensure correct voltage and output configuration. Confirm that the 4-SMD no-lead package matches your PCB footprint requirements. Check datasheet specifications for operating temperature range and load capacitance before integration into final designs.

Selection Notes

Select this component when a stable 109.5575 MHz reference is required in space-constrained designs. Consider the 1.8V supply constraint and LVCMOS interface compatibility with downstream logic. Evaluate the need for standby functionality against system power management strategies.

Part Context

This part belongs to the Mercury Electronics XO series, designed for general-purpose timing applications. The manufacturer specializes in quartz-based frequency control products, offering various oscillators including TCXOs and VCXOs for diverse industrial and consumer electronics markets.

Replacement Considerations

Direct substitutes must match the 109.5575 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package dimensions. Verify pinout compatibility and electrical characteristics such as phase noise and stability before cross-referencing with other manufacturers' offerings.