18QHTF21-106.000-PD

Overview

The 18QHTF21-106.000-PD is a crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a nominal frequency of 106.0 MHz with a supply voltage of 1.8V. The device utilizes LVCMOS output logic and features a power-down standby function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm. The component supports standard clock signal generation for digital circuits.

Feature Summary

• Integrated power-down standby capability for energy management
• Compact surface-mount design suitable for space-constrained layouts
• LVCMOS output interface compatible with standard digital logic

Applications

• Digital clock signal distribution
• Processor and FPGA timing references
• Communication interface synchronization

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the 4-SMD package footprint matches the PCB silkscreen and copper pad layout to prevent assembly errors during manufacturing.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a precise 106.0 MHz reference frequency. Consider the small 2.0x1.6 mm form factor for high-density board designs. Evaluate the need for power-down functionality if system-level power efficiency is a critical design constraint compared to continuous-operation alternatives.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequency options within a standardized 4-pin SMD package. The 'PD' suffix indicates the inclusion of a power-down control feature, distinguishing it from standard continuous-output variants within the same physical footprint family.

Replacement Considerations

Direct substitutes must match the 106.0 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical specifications such as phase noise and jitter before cross-referencing other manufacturers' offerings.