18QHTF21-27.178-OE

Oscillators Overview

The 18QHTF21-27.178-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 27.178 MHz and utilizes LVCMOS output logic. The device is designed for low voltage applications, requiring a supply voltage of 1.8V. It features an enable/disable control function to manage power consumption. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. This surface-mount oscillator is suitable for digital circuits requiring precise clock signals.

Oscillators Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated enable/disable control functionality
• Compact 4-SMD no lead surface mount package

Oscillators Applications

• Digital signal processing systems
• Communication equipment clocking
• Embedded system timing references

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD package footprint matches your PCB layout constraints. Check for any specific environmental operating temperature ranges required by your application standards.

Oscillators Selection Notes

Select this component when a low-voltage, small-form-factor clock source is required. The LVCMOS output ensures compatibility with standard digital logic families. Consider the enable pin feature if power management during idle states is necessary. Verify that the 27.178 MHz frequency meets the exact timing requirements of the target application without needing external dividers or multipliers.

Oscillators Part Context

This part belongs to Mercury Electronics' line of quartz crystal oscillators. The manufacturer specializes in frequency control products including crystals, TCXOs, and VCXOs. The 18QHTF21 series represents their standard XO offerings in a miniature SMD package. Mercury Electronics has a long history in Taiwan's quartz industry, providing reliable timing solutions for various electronic sectors.

Oscillators Replacement Considerations

Direct substitutes must match the 27.178 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical specifications before swapping. Generic replacements may differ in phase noise or stability characteristics.