18QHTF21-18.0633-PD

Oscillators Overview

The 18QHTF21-18.0633-PD is a quartz crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 18.0633 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a Standby (Power Down) function to reduce power consumption when not in active use. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. This component is suitable for applications requiring precise timing signals in low-voltage digital systems.

Oscillators Feature Summary

• Supports Low Voltage CMOS (LVCMOS) output logic levels
• Includes Standby or Power Down functionality for energy efficiency
• Utilizes a leadless surface-mount package design

Oscillators Applications

• General purpose clock signal generation
• Low voltage digital circuit timing
• Portable electronic devices requiring power management

Oscillators Procurement Notes

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

Oscillators Selection Notes

Select this model when a stable 18.0633 MHz reference is needed for LVCMOS-compatible interfaces. The choice is driven by the requirement for a low-profile, leadless package to save board space. Consider the standby feature if power conservation is critical during idle periods. Ensure the operating temperature range meets the environmental conditions of the intended deployment scenario.

Oscillators Part Context

This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronics. The series offers various frequencies within the LVCMOS format. The 'PD' suffix typically indicates the inclusion of a power-down pin or function. These components are widely used in consumer electronics and industrial control systems where size and power efficiency are prioritized over ultra-high precision specifications.

Oscillators Replacement Considerations

Direct replacements must match the 18.0633 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify pinout compatibility to ensure the standby function connects correctly. Cross-reference with other manufacturers offering similar small-form-factor oscillators if Mercury stock is unavailable.