18QHTF21-63.200-PD

Overview

The 18QHTF21-63.200-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 63.2 MHz and utilizes LVCMOS output logic levels. The device is designed for low-power applications, featuring a supply voltage of 1.8V and a standby power-down mode to minimize energy consumption during idle periods. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly on printed circuit boards.

Feature Summary

• Supports LVCMOS output interface for digital signal compatibility
• Includes standby power-down functionality for reduced current draw
• Operates on a single 1.8V power supply rail

Applications

• Battery-powered portable electronic devices
• General-purpose digital clock generation
• Embedded system timing references

Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against the target application design before procurement. Confirm that the 4-SMD no-lead package dimensions align with the PCB footprint specifications. Ensure the 1.8V supply voltage is stable within the datasheet limits to maintain frequency accuracy. Cross-reference the part number suffix PD to confirm the presence of the power-down feature in the final order.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a standard LVCMOS output interface. The integrated power-down mode makes it suitable for systems requiring active standby states to conserve battery life. Consider the 4-SMD package size constraints during layout planning. This model is appropriate for general timing applications where precise programmability is not needed, relying instead on a fixed 63.2 MHz frequency.

Part Context

This oscillator belongs to the Mercury Electronics 18QHTF series, which focuses on low-voltage, low-power timing solutions. The series typically offers various frequencies and output types within a small form factor. The 'PD' suffix indicates the inclusion of a power-down control pin or function, distinguishing it from standard continuous-operation variants in the same package family.

Replacement Considerations

Direct replacements must match the 63.2 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify if substitute parts support the power-down feature. Check thermal and electrical specifications for compatibility.