18QHTF21-40.0079-PD

Oscillators Overview

The 18QHTF21-40.0079-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 40.0079 MHz with a supply voltage of 1.8V. The device utilizes LVCMOS output logic and features power down functionality. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm.

Oscillators Feature Summary

• Supports low voltage operation at 1.8V for energy-efficient applications
• Includes power down capability to reduce current consumption during idle periods
• Delivers stable LVCMOS output signals for digital circuit interfacing

Oscillators Applications

• Portable electronic devices requiring low power consumption
• Communication modules utilizing standard clock frequencies
• Embedded systems needing precise timing references

Oscillators Procurement Notes

Verify the specific ordering suffix PD against the manufacturer's official documentation to ensure correct packaging and pin configuration. Confirm that the 1.8V supply requirement aligns with the target system design before procurement. Cross-reference the frequency tolerance specifications with application requirements.

Oscillators Selection Notes

Select this component when a 40.0079 MHz clock source is required within a 2.0x1.6mm footprint. Ensure the host circuit supports 1.8V logic levels and can accommodate the standby current characteristics defined in the datasheet. Validate thermal performance under continuous operation conditions.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz frequency control products. The series offers various frequencies and packages tailored for consumer electronics and industrial applications, emphasizing reliability and compact form factors.

Oscillators Replacement Considerations

Check for direct substitutes within the same series offering identical electrical parameters and mechanical dimensions. Verify compatibility with existing PCB layouts and signal integrity requirements before substituting.