18QHTF21-55.500-OE

Overview

The 18QHTF21-55.500-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 55.5 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and features an enable/disable control function. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications requiring precise timing signals.

Feature Summary

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

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 your system design before ordering. Confirm that the 1.8V supply voltage aligns with your power architecture. Ensure the 4-SMD footprint matches your PCB layout constraints. Cross-reference the manufacturer datasheet for detailed electrical specifications to guarantee operational reliability.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside LVCMOS outputs. The enable/disable feature supports dynamic power management strategies. The small form factor suits space-constrained designs. Verify that the 55.5 MHz frequency meets the target application's timing needs without additional frequency multiplication or division.

Part Context

This part belongs to the Mercury Electronics 18QHTF21 series of standard crystal oscillators. The series offers various frequencies and voltage options. The 'OE' suffix typically denotes specific packaging or tape-and-reel configurations. Mercury Electronics specializes in quartz frequency control products, providing reliable timing solutions for electronic systems.

Replacement Considerations

Direct substitutes must match the 55.5 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Check equivalent models from other manufacturers ensuring identical pinout and electrical characteristics. Verify that any alternative component supports the enable/disable control function if utilized in the design.