18QHTF21-106.544-PD

Overview

The 18QHTF21-106.544-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind., Co., Ltd. It operates at a fixed frequency of 106.544 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and features a Standby (Power Down) control function to manage power consumption. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. This component is designed for applications requiring precise clock signals with low power characteristics.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes Standby (Power Down) functionality for energy management
• Operates on a 1.8V supply voltage suitable for portable electronics

Applications

• Battery-powered devices requiring low current consumption
• Portable electronic equipment needing precise clock signals
• Digital systems utilizing LVCMOS interfaces

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Ensure the 1.8V supply rail stability meets the oscillator's operational specifications. Confirm that the PCB footprint matches the 2.0x1.6mm SMD package dimensions to avoid assembly issues. Cross-reference the datasheet for any specific soldering profile recommendations to maintain component integrity during manufacturing.

Selection Notes

Select this model when a 106.544 MHz clock source is required with minimal power draw. The 1.8V operating voltage makes it suitable for modern low-voltage digital circuits. Consider the small 2.0x1.6mm package size for space-constrained designs. The Standby feature allows for dynamic power management, which is critical for battery-operated applications. Ensure the system architecture supports LVCMOS signaling levels for proper signal interpretation.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies within a standardized 4-SMD no-lead form factor. These components are engineered for high reliability and consistent performance across industrial temperature ranges. The 'PD' suffix typically indicates the inclusion of a Power Down pin or function, enhancing system-level power efficiency compared to standard continuous-operation oscillators.

Replacement Considerations

Direct replacements must match the 106.544 MHz frequency, 1.8V supply, LVCMOS output, and 2.0x1.6mm package. Verify equivalent standby functionality and electrical characteristics. Consult manufacturer cross-reference lists for validated substitutes.