18QHTF21-10.78125-PD

Overview

The 18QHTF21-10.78125-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 10.78125 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 with dimensions of 2.0x1.6mm, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

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

Applications

• General-purpose digital circuit timing
• Embedded system clock generation
• Portable electronic devices requiring low power

Procurement Notes

Verify the specific frequency suffix and package type against the official datasheet before procurement. Ensure compatibility with the target supply voltage and logic levels. Confirm that the 4-SMD no-lead footprint matches the PCB design requirements. Cross-reference the manufacturer part number to avoid confusion with similar series components.

Selection Notes

Select this component when a 10.78125 MHz reference signal is required for LVCMOS-compatible circuits. Consider the 1.8V operating voltage constraint for power budgeting. The small 2.0x1.6mm package is ideal for space-constrained designs. Evaluate the need for power-down capabilities if energy efficiency is a priority in the application.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which focuses on compact, low-power timing solutions. The series typically offers various frequency options within a standardized small outline package format. Mercury Electronics specializes in quartz-based frequency control products, providing reliable timing components for consumer and industrial electronics markets.

Replacement Considerations

Direct substitutes must match the 10.78125 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm footprint. Verify pinout compatibility and electrical characteristics such as load capacitance and drive strength. Consult the manufacturer's cross-reference list for approved alternatives.