18QHTF21-114.318-PD

Overview

The 18QHTF21-114.318-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 114.318 MHz and utilizes LVCMOS output logic. The device requires 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 with dimensions of 2.0mm by 1.6mm. The component is designed for surface-mount applications and supports specific operating temperature ranges typical for commercial electronic circuits.

Feature Summary

• Integrates LVCMOS output logic for digital signal compatibility
• Includes standby mode functionality to reduce power consumption
• Utilizes a small form factor SMD package for space-constrained designs

Applications

• General purpose clock generation in embedded systems
• Timing reference for digital communication interfaces
• Clock source for microprocessors and FPGAs

Procurement Notes

Verify the exact frequency tolerance and load capacitance requirements against the specific application circuit design before procurement. Ensure that the 1.8V supply rail stability meets the oscillator's operational specifications. Confirm that the PCB footprint matches the 4-SMD No Lead package dimensions provided in the official datasheet to prevent assembly errors during manufacturing.

Selection Notes

Select this component when a precise 114.318 MHz clock signal is required with low voltage operation. Consider the LVCMOS interface compatibility with downstream logic families. Evaluate the thermal performance within the intended operating temperature range. Compare physical size constraints against alternative packages if space is limited. Verify power-down feature availability if dynamic power management is critical to the system architecture.

Part Context

This part belongs to the 18QHTF21 series of surface mount oscillators from Mercury Electronics. The series offers various frequency options within a standardized 2.0x1.6mm footprint. These components are designed to replace through-hole crystals in modern high-density PCB layouts. The series maintains consistent electrical characteristics across different frequency variants while offering flexible packaging options for automated assembly processes.

Replacement Considerations

Direct substitutes must match the 114.318 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD No Lead package. Check equivalent models from other manufacturers ensuring identical pinout and mechanical dimensions. Verify that replacement parts meet the same temperature range and electrical specifications.