18QHTF21-26.540-PD

Oscillators Overview

The 18QHTF21-26.540-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 26.54 MHz and utilizes LVCMOS output logic levels. The device is designed for low-power applications, featuring a supply voltage of 1.8V and including a standby or power-down function to reduce energy consumption when not in active use. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm, suitable for surface-mount assembly in space-constrained electronic designs.

Oscillators Feature Summary

• LVCMOS output logic interface
• Integrated standby power-down mode
• Compact 4-SMD no-lead surface mount package

Oscillators Applications

• General purpose timing clock generation
• Low-power embedded systems
• Consumer electronics requiring precise frequency references

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Ensure that the 1.8V supply rail stability meets the oscillator specifications. Confirm that the PCB footprint matches the 2.0x1.6 mm SMD package outline to avoid assembly issues. Check for any specific reflow soldering profile recommendations provided by the manufacturer to ensure joint integrity.

Oscillators Selection Notes

Select this component when a stable 26.54 MHz reference is required with minimal power consumption. The LVCMOS output is compatible with standard digital logic families operating at 1.8V. Consider the physical size constraints of the application, as the small 2.0x1.6 mm package offers high density. Evaluate the need for the power-down feature if the system has idle states to optimize battery life or thermal performance.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz-based frequency control products. The series typically includes various frequencies and packages, catering to diverse timing needs in modern electronics. Mercury Electronics is a established supplier known for manufacturing quartz crystals and oscillators, providing reliable timing solutions for industrial and consumer markets.

Oscillators Replacement Considerations

Direct replacements must match the 26.54 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical characteristics such as phase noise and jitter if critical. Cross-reference with other manufacturers offering similar XO specifications to ensure functional equivalence without redesigning the host circuit.