18QHTF21-13.518-OE

Overview

The 18QHTF21-13.518-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 13.518 MHz and utilizes LVCMOS output logic. The device supports a supply voltage range including 1.8V and features an enable/disable control function. It is housed in a compact 4-SMD, No Lead package suitable for surface-mount applications.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes hardware enable and disable control functionality
• Designed as a standard crystal oscillator with fixed frequency output

Applications

• General purpose clock signal generation
• Digital circuit timing references
• Embedded system clock sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target application design before procurement. Confirm that the 4-SMD no-lead package dimensions align with the PCB footprint. Ensure the selected supply voltage matches the operational range specified in the official datasheet to guarantee stable oscillation and proper enable/disable functionality.

Selection Notes

Select this component when a precise 13.518 MHz clock source is required with low-profile surface-mount packaging. Consider the LVCMOS output compatibility with downstream digital logic levels. Evaluate the need for active enable/disable control versus always-on operation based on power management strategies. Verify thermal performance within the operating temperature range for the intended environment.

Part Context

This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronics. The series offers various frequencies with LVCMOS outputs in a small form factor. Mercury Electronics specializes in quartz crystals and timing components, providing solutions for frequency control needs across consumer and industrial electronics markets.

Replacement Considerations

Direct substitutes include other 13.518 MHz LVCMOS oscillators in 4-SMD packages from manufacturers such as Epson or NDK. Ensure pinout compatibility and electrical specifications match exactly. Cross-reference with similar Mercury models like 18QHTF21-13.1313-OE only if frequency flexibility is acceptable.