18QHTF21-65.420-PD

Overview

The 18QHTF21-65.420-PD is a 65.42 MHz crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a supply voltage of 1.8V and features LVCMOS output logic. The component supports a standby or power-down mode for energy efficiency. It is housed in a compact 2.0x1.6 mm surface-mount package with no lead construction, designed for space-constrained electronic applications requiring precise clock signals.

Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby and power-down functionality
• Utilizes LVCMOS output interface

Applications

• Embedded system clock generation
• Portable electronic devices
• Communication modules

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the official datasheet before procurement. Confirm that the 1.8V supply voltage aligns with the target circuit design. Ensure the 2.0x1.6 mm footprint matches the PCB layout constraints. Check for any specific reflow soldering profile recommendations provided by the manufacturer to ensure reliable assembly.

Selection Notes

Select this component when a low-profile, low-power clock source is required for digital circuits. The 1.8V operating voltage makes it suitable for modern low-voltage logic families. The integrated power-down feature aids in battery-powered designs. Consider the mechanical dimensions and lead-free construction for compliance with environmental standards and spatial limitations.

Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series typically offers various standard frequencies within a small form factor. The 'PD' suffix indicates the inclusion of a power-down control pin, allowing for active management of power consumption during idle periods.

Replacement Considerations

Direct substitutes must match the 65.42 MHz frequency, 1.8V supply, LVCMOS output, and 2.0x1.6 mm package. Verify pin compatibility and electrical characteristics with alternative manufacturers such as Epson or SiTime if Mercury parts are unavailable.