18QHTF21-114.426-PD

Overview

The 18QHTF21-114.426-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 114.426 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes a standby or power-down feature for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm.

Feature Summary

• Supports low-voltage operation at 1.8V
• Features integrated power-down capability
• Provides standard LVCMOS signal output

Applications

• Digital clock generation
• Data communication interfaces
• Embedded system timing

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply rail is stable to ensure proper oscillator startup. Ensure the PCB footprint matches the 2.0x1.6mm SMD package dimensions to avoid assembly issues during production.

Selection Notes

Select this component when a precise 114.426 MHz reference is required for LVCMOS-compatible circuits. Consider the 1.8V operating voltage constraint and the need for power-down functionality. Evaluate the small form factor suitability for space-constrained designs requiring high-frequency stability.

Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series typically offers various frequencies within a standardized 2.0x1.6mm package. The PD suffix indicates the inclusion of a power-down control pin, distinguishing it from continuous-output variants.

Replacement Considerations

Direct substitutes include other 114.426 MHz LVCMOS oscillators in 2.0x1.6mm packages with 1.8V operation. Verify pin compatibility and electrical specifications before swapping manufacturers.