18QHTF21-18.217188-PD

Oscillators Overview

The 18QHTF21-18.217188-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a nominal frequency of 18.217188 MHz and utilizes LVCMOS output logic levels. The device supports a supply voltage of 1.8V and includes 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.

Oscillators Feature Summary

• LVCMOS output interface for digital circuit compatibility
• Integrated standby mode to reduce power consumption
• Compact 4-SMD no-lead surface mount package design

Oscillators Applications

• Digital signal processing systems requiring precise clock references
• Communication equipment utilizing standard frequency protocols
• Embedded control units with low-voltage power constraints

Oscillators Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to ensure correct frequency tolerance and load capacitance specifications. Confirm that the 4-SMD package dimensions align with your PCB footprint requirements. Check for any recent updates to the standby pin configuration or electrical characteristics before finalizing component selection.

Oscillators Selection Notes

Select this component when a stable 18.217188 MHz reference is required in space-constrained designs. The 1.8V operating voltage makes it suitable for modern low-power digital logic families. Ensure the application can accommodate the LVCMOS output swing and that the standby feature integrates correctly with the system's power management scheme.

Oscillators Part Context

This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronics. The series offers various frequency options within a small form factor. Mercury Electronics is a specialized manufacturer of frequency control products, including quartz crystals and oscillators, with a long history in the industry.

Oscillators Replacement Considerations

Direct substitutes must match the 18.217188 MHz frequency, LVCMOS output type, 1.8V supply, and 4-SMD package. Verify pinout compatibility and electrical parameters such as phase noise and jitter if critical to the design.