18QHTF21-122.167958-PD

Overview

The 18QHTF21-122.167958-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 122.167958 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and includes a standby or power-down function to manage energy consumption during inactive periods. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly on printed circuit boards.

Feature Summary

• Supports low-voltage operation with a 1.8V supply requirement
• Integrates a standby mode for power management
• Provides standard LVCMOS signal output

Applications

• Digital signal processing systems requiring precise clock timing
• Communication equipment utilizing standard frequency references
• Embedded control units needing compact oscillator solutions

Procurement Notes

Verify the specific frequency tolerance and stability specifications against your system requirements before procurement. Confirm that the 1.8V supply voltage aligns with your board design. Ensure the 4-SMD no-lead package dimensions fit within your PCB footprint constraints. Check for any RoHS compliance documentation if required by your manufacturing standards.

Selection Notes

Select this component when a stable 122.167958 MHz reference is needed with low power consumption capabilities. The LVCMOS interface ensures compatibility with standard digital logic families. Consider the standby feature if power efficiency is critical for the application. The small form factor makes it suitable for space-constrained designs.

Part Context

This part belongs to the Mercury Electronics XO series, which focuses on providing reliable frequency control solutions. The manufacturer has extensive experience in quartz crystal production. This specific model represents a standard configuration within their portfolio, offering a balance of performance and size for general electronic applications.

Replacement Considerations

Direct substitutes must match the 122.167958 MHz frequency, LVCMOS output, and 1.8V supply voltage. Verify pinout compatibility for the 4-SMD package. Ensure equivalent frequency stability and phase noise characteristics are maintained to avoid system timing errors.