18QHTF21-68.18181-PD

Overview

The 18QHTF21-68.18181-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 68.18181 MHz and utilizes LVCMOS output logic. The device is designed for low-power applications, featuring a 1.8V supply voltage and a standby power-down mode. It is housed in a compact 4-SMD, no-lead package, suitable for surface-mount assembly.

Feature Summary

• LVCMOS output logic interface
• 1.8V operating supply voltage
• Standby power-down capability
• Compact 4-SMD no-lead package

Applications

• Precision frequency generation
• Low-power clock signal distribution
• Embedded system timing references

Procurement Notes

Verify the exact part number suffix against official Mercury Electronics documentation to ensure correct specifications. Confirm that the LVCMOS output and 1.8V supply requirements align with your circuit design before procurement.

Selection Notes

Select this component when a precise 68.18181 MHz clock source is required with low voltage operation. Ensure the PCB layout supports the 4-SMD no-lead footprint and that the system can accommodate the standby control functionality if power saving is needed.

Part Context

This model belongs to the Mercury Electronics standard XO series, which provides reliable quartz-based timing solutions. The manufacturer has extensive experience in quartz crystal production, offering components for various industrial and consumer electronics applications requiring stable frequency control.

Replacement Considerations

Check for direct substitutes within the same Mercury Electronics series or other manufacturers offering identical 68.18181 MHz LVCMOS oscillators in 4-SMD packages. Verify pin compatibility and electrical parameters before substitution.