18QHTF21-27.13438-PD

Oscillators Overview

The 18QHTF21-27.13438-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 27.13438 MHz and utilizes an LVCMOS output logic level. The device is designed for a supply voltage of 1.8V and features a Standby (Power Down) control function to manage power consumption. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

• LVCMOS output interface for digital compatibility
• Integrated standby control for power management
• Quartz-based resonator for frequency stability

Oscillators Applications

• Digital signal processing clocking
• Communication equipment timing
• Embedded system synchronization

Oscillators Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to ensure correct pinout and electrical specifications. Confirm that the 1.8V supply requirement aligns with the target circuit design. Check for any recent revisions to the 18QHTF21 series documentation regarding thermal or mechanical tolerances before finalizing procurement.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a standard LVCMOS output. The integrated standby feature makes it suitable for battery-powered or power-sensitive designs. Ensure the 4-SMD no-lead package dimensions fit the available PCB space and that the manufacturing technology supports the required operating temperature range.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, a manufacturer specializing in quartz crystals and oscillators. The series typically offers various frequencies and supply voltages. This specific model provides a precise 27.13438 MHz output, catering to niche timing requirements within the broader family of surface-mount crystal oscillators.

Oscillators Replacement Considerations

Direct substitutes must match the 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify frequency tolerance and phase noise specifications if replacing with other brands. Cross-reference the pin configuration to ensure compatibility without circuit modification.