18QHTF21-22.0548-PD

Oscillators Overview

The 18QHTF21-22.0548-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 22.0548 MHz and utilizes LVCMOS output logic. The device is designed for low-voltage applications with a supply voltage of 1.8V. It features a standby or power-down mode capability to reduce energy consumption when not in active use. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly on printed circuit boards.

Oscillators Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated standby and power-down functionality
• Compact 4-SMD no-lead surface mount package

Oscillators Applications

• Digital signal processing systems requiring precise timing
• Communication equipment utilizing standard clock frequencies
• Embedded control units operating at 1.8V logic levels

Oscillators Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to ensure the correct pinout and electrical specifications match the design requirements. Confirm that the 4-SMD no-lead package dimensions align with the PCB footprint. Check for any recent updates to the RoHS compliance status or lead-free certification if required by regulatory standards. Ensure the selected variant supports the necessary operating temperature range for the intended environment.

Oscillators Selection Notes

Select this component when a stable 22.0548 MHz reference is needed for LVCMOS-compatible circuits. The 1.8V supply requirement makes it suitable for modern low-power portable devices. Consider the standby feature if power management is critical. Evaluate the thermal performance within the specified operating temperature range. Ensure the board layout accommodates the small form factor of the 4-SMD package.

Oscillators Part Context

This part belongs to the Mercury Electronics 18QHTF21 series of standard crystal oscillators. The series offers various frequencies and voltage options in a consistent small outline package. Mercury Electronics specializes in quartz crystals and timing solutions, providing components for consumer electronics and industrial applications. This specific model represents a common audio-rate frequency option within their portfolio.

Oscillators Replacement Considerations

Direct substitutes must match the 22.0548 MHz frequency, LVCMOS output, 1.8V supply, and 4-SMD no-lead package. Verify pin-to-pin compatibility before replacement. Alternative parts from other manufacturers require careful review of electrical parameters and mechanical dimensions.