18QHTF21-119.680-OE

Overview

The 18QHTF21-119.680-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 119.68 MHz and utilizes LVCMOS output logic. The device requires a supply voltage of 1.8V and features an enable/disable control function for power management. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications.

Feature Summary

• Supports active enable and disable control via input pin
• Generates stable clock signals using LVCMOS logic levels
• Utilizes lead-free surface mount packaging for automated assembly

Applications

• Digital signal processing systems requiring precise timing
• Communication equipment utilizing high-frequency clock sources
• Embedded systems with low-voltage power constraints

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to ensure compatibility with required voltage and load conditions. Confirm that the LVCMOS output type matches the receiving circuit's input requirements. Check for any recent revisions to the mechanical dimensions or thermal specifications before finalizing the bill of materials.

Selection Notes

Select this component when a fixed 119.68 MHz frequency is required within a low-voltage 1.8V system architecture. The enable/disable feature makes it suitable for power-sensitive designs where clock gating is necessary. Ensure the PCB layout accommodates the 4-SMD no-lead footprint and provides adequate thermal relief for soldering processes.

Part Context

This part belongs to Mercury Electronics' series of standard crystal oscillators. The company specializes in quartz-based frequency control products, including crystals, TCXOs, and VCXOs. This specific model represents their capability to produce high-frequency oscillators in small form factors for modern electronic applications.

Replacement Considerations

Direct substitutes must match the 119.68 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify electrical parameters such as phase noise and jitter against the original specification to ensure system timing integrity is maintained during replacement.