18QHTF21-42.543-OE

Oscillators Overview

The 18QHTF21-42.543-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 42.543 MHz with an LVCMOS output logic level. 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 with dimensions of 2.0mm x 1.6mm. The component supports an operating temperature range of -40°C to 85°C and offers frequency stability of ±50ppm.

Oscillators Feature Summary

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

Oscillators Applications

• General purpose clock signal generation
• Embedded system timing references
• Consumer electronics circuit boards

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD footprint matches your PCB layout constraints. Check for RoHS compliance status if required by your manufacturing standards. Validate the operating temperature range suitability for your intended environment.

Oscillators Selection Notes

Choose this oscillator when a low-profile surface-mount solution is required for space-constrained designs. The LVCMOS output is suitable for direct interfacing with standard digital logic families. Consider the ±50ppm stability specification for applications requiring moderate precision. The enable pin allows for dynamic power control, which is beneficial for battery-operated devices. Compare against other Mercury models in the 18QHTF series for alternative frequencies or packages.

Oscillators Part Context

This part belongs to the 18QHTF series of surface-mount crystal oscillators from Mercury Electronics. The series typically includes various frequencies and supply voltages. The 'OE' suffix often denotes specific packaging or environmental compliance options. Similar parts in the lineup include variants like 18QHTF21-42.656-OE, differing primarily in output frequency while maintaining similar electrical characteristics and physical dimensions.

Oscillators Replacement Considerations

Direct substitutes may include other 42.543 MHz oscillators from different manufacturers with compatible LVCMOS outputs and 1.8V operation. Verify pinout compatibility, especially regarding the enable/disable pin configuration. Ensure the replacement part meets the same size constraints (2.0x1.6mm) and temperature range. Cross-reference with Mercury's own product line for identical specifications.