18QHTF21-100.800-PD

Overview

The 18QHTF21-100.800-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 100.8 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and supports a standby or power-down mode for energy management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications.

Feature Summary

• Supports low-power standby operation via power-down control
• Delivers stable LVCMOS signal output for digital interfacing
• Utilizes a leadless SMD package for automated assembly compatibility

Applications

• High-speed data communication interfaces requiring precise clocking
• Embedded systems utilizing 1.8V logic families
• Portable electronic devices prioritizing power efficiency

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply rail is stable to ensure proper oscillator startup and signal integrity. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions provided in the official datasheet to avoid assembly issues.

Selection Notes

Select this component when a 100.8 MHz reference clock is required within a 1.8V system environment. Consider the LVCMOS output swing compatibility with downstream logic gates. Evaluate the thermal performance and size constraints of the 4-SMD package relative to the available board space.

Part Context

This part belongs to the 18QHTF21 series of standard oscillators from Mercury Electronics. The series typically offers various frequencies optimized for consumer and industrial electronics. The 'PD' suffix indicates the inclusion of a power-down feature, distinguishing it from basic continuous-operation models within the same form factor.

Replacement Considerations

Direct substitutes must match the 100.8 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility if replacing with components from other manufacturers. Check equivalent jitter specifications and temperature stability ranges to maintain system performance.