18QHTF21-66.148-PD

Overview

The 18QHTF21-66.148-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 66.148 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm. This component is designed for applications requiring precise timing signals in low-voltage digital systems.

Feature Summary

• LVCMOS output interface for standard digital logic compatibility
• Integrated standby mode to reduce power consumption during idle periods
• Compact surface-mount package suitable for space-constrained designs

Applications

• General purpose clock generation in embedded systems
• Timing reference for microprocessors and FPGAs
• Communication equipment requiring stable frequency sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your system design before procurement. Ensure that the 1.8V supply voltage aligns with your power rail specifications. Confirm that the 4-SMD no-lead package footprint matches your PCB layout constraints. Check for any RoHS compliance documentation if required by your manufacturing standards.

Selection Notes

Select this component when a 66.148 MHz clock signal is required with LVCMOS outputs. Consider the 1.8V operating voltage and standby feature for power-sensitive applications. Evaluate the 2.0x1.6 mm package size against available board space. Compare performance metrics such as phase noise and stability if high-precision timing is critical for the application.

Part Context

This part belongs to the Mercury Electronics SMD oscillator series, specifically designed for standard clocking needs. The 'PD' suffix indicates the inclusion of a power-down pin functionality. The 18QHTF21 series typically offers various frequencies within a small form factor, catering to modern electronics that demand miniaturization and efficient power usage.

Replacement Considerations

Direct substitutes may include other 66.148 MHz LVCMOS oscillators in a 4-SMD 2.0x1.6mm package from different manufacturers. Verify electrical parameters such as supply voltage, output swing, and current consumption. Ensure mechanical compatibility with the existing footprint. Cross-reference datasheets for thermal and environmental specifications.