18QHTF21-27.9167-PD

Oscillators Overview

The 18QHTF21-27.9167-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 27.9167 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly in space-constrained electronic designs.

Oscillators Feature Summary

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

Oscillators Applications

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

Oscillators Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against the target application design before procurement. Confirm that the 1.8V supply voltage aligns with the system power architecture. Ensure the 4-SMD footprint matches the PCB layout constraints. Cross-reference the part number suffix to confirm the exact frequency tolerance and stability specifications required for the final product integration.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a standard LVCMOS interface. The choice is appropriate for applications prioritizing low power consumption through the standby feature. Consider the small form factor of the 4-SMD package for dense board layouts. Evaluate if the standard frequency stability meets the system timing accuracy needs compared to higher-grade alternatives.

Oscillators Part Context

This oscillator belongs to the Mercury Electronics XO series, designed for general-purpose timing applications. The manufacturer specializes in quartz frequency control products with a long history in the industry. This specific model represents a standard configuration within their SMD oscillator lineup, balancing performance with cost-effectiveness for common digital interfaces.

Oscillators Replacement Considerations

Direct replacements must match the 27.9167 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pin compatibility and electrical characteristics such as rise/fall times and duty cycle. Consult official substitution lists from Mercury Electronics or equivalent manufacturers for cross-referenced parts with identical mechanical and electrical profiles.