18QHTF21-20.625-PD

Oscillators Overview

The 18QHTF21-20.625-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 20.625 MHz and utilizes LVCMOS output logic levels. The device is designed for a supply voltage of 1.8V and features a standby or power-down function to manage energy consumption. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

• Supports low-voltage operation at 1.8V with LVCMOS interface
• Includes standby mode for power management
• Utilizes leadless SMD packaging for surface mounting

Oscillators Applications

• General-purpose digital timing circuits
• Embedded systems requiring precise clock references
• Consumer electronics with space constraints

Oscillators Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against your circuit design before procurement. Ensure that the 1.8V supply rail is stable and within tolerance to maintain frequency accuracy. Confirm that the PCB footprint matches the 4-SMD no-lead package dimensions provided in the official datasheet to avoid assembly issues.

Oscillators Selection Notes

Select this component when a 20.625 MHz clock signal is required with low power consumption capabilities. The 1.8V supply requirement makes it suitable for modern low-voltage digital logic families. Consider the standby feature if power efficiency during idle states is a critical design parameter for the target application.

Oscillators Part Context

This part belongs to the QHTF series of oscillators from Mercury Electronics, which are known for quartz-based frequency stability. The 'PD' suffix indicates the inclusion of a power-down pin or functionality. As a standard XO, it provides a fixed frequency output without external tuning, relying on internal resonator characteristics for performance.

Oscillators Replacement Considerations

Direct substitutes must match the 20.625 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify that any alternative offers comparable frequency stability and phase noise specifications. Ensure the replacement supports the same standby control mechanism if power management is required.