18QHTF21-63.950-PD

Overview

The 18QHTF21-63.950-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 63.95 MHz with an LVCMOS output logic level. The device requires a 1.8V supply voltage 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 2.0 x 1.6 mm. This component is designed for applications requiring precise clock signals in space-constrained electronic systems.

Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby and power-down functionality
• Utilizes LVCMOS output logic
• Features a compact surface-mount package

Applications

• General-purpose digital circuit clocking
• Embedded system timing references
• Portable electronic devices requiring low power consumption

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your design specifications before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no-lead package footprint matches your PCB layout constraints. Check for any specific handling instructions related to the surface-mount technology used in this oscillator.

Selection Notes

Select this model when a 63.95 MHz clock signal is required with low voltage compatibility. Consider the LVCMOS interface for direct connection to standard digital logic inputs. Evaluate the power-down feature if energy efficiency during idle states is critical. Compare the physical dimensions against available board space to ensure fitment within the 2.0 x 1.6 mm envelope.

Part Context

This part belongs to the Mercury Electronics XO series, which provides standard frequency control solutions. The manufacturer has extensive experience in quartz crystal production since 1973. The product line includes various oscillators such as TCXO and VCXO, but this specific model is a fixed-frequency standard oscillator designed for general timing applications.

Replacement Considerations

Direct substitutes include other 63.95 MHz LVCMOS oscillators from Mercury Electronics with identical pinouts and voltage requirements. Models like 18QHTF21-63.950 without the PD suffix may lack power-down capability. Cross-reference with other manufacturers offering 2.0x1.6mm 1.8V LVCMOS oscillators at 63.95 MHz, ensuring electrical parameters match exactly.