18QHTF21-86.875-PD

Overview

The 18QHTF21-86.875-PD is a surface-mount crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 86.875 MHz with an LVCMOS output format. The device requires a 1.8V supply voltage and features a power-down function for standby mode. It utilizes a 4-SMD, No Lead package with dimensions of 0.079 inches. The component supports an operating temperature range of -40°C to 85°C and maintains a frequency stability of ±50ppm.

Feature Summary

• Supports LVCMOS output signal format
• Includes power-down functionality for standby operation
• Designed for surface-mount assembly

Applications

• Digital clock generation
• Data communication interfaces
• Embedded system timing

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply rail meets the current consumption specifications during active and standby modes. Ensure the PCB footprint matches the 4-SMD, No Lead package dimensions to guarantee proper solder joint integrity and thermal performance.

Selection Notes

Select this model when a precise 86.875 MHz reference is required in space-constrained designs. The low-profile SMD package facilitates automated placement processes. Consider the ±50ppm stability limit for applications sensitive to long-term drift. The integrated power-down feature aids in reducing overall system power consumption during idle periods compared to non-configurable oscillators.

Part Context

This component belongs to the 18QHTF21 series of miniature crystal oscillators from Mercury Electronics. The series offers various frequency options within a standardized 2.0x1.6mm footprint. The 'PD' suffix indicates the inclusion of a power-down control pin, allowing for dynamic energy management. This family targets portable electronics and high-density digital boards requiring reliable timing sources.

Replacement Considerations

Direct substitutes must match the 86.875 MHz frequency, LVCMOS output, 1.8V supply, and 4-SMD package. Verify pinout compatibility and thermal characteristics. Cross-reference with other manufacturers offering equivalent small-form-factor oscillators if supply constraints exist.