18QHTF21-57.543667-PD

Overview

The 18QHTF21-57.543667-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 57.543667 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a power-down standby mode for energy efficiency. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. The component is designed for surface-mount applications requiring precise timing signals.

Feature Summary

• Supports low-voltage operation at 1.8V
• Includes power-down standby functionality
• Utilizes LVCMOS output interface
• Compact 4-SMD no-lead package design

Applications

• Digital signal processing systems
• Communication equipment timing
• Microcontroller clock sources
• Embedded system synchronization

Procurement Notes

Verify the exact frequency tolerance and load capacitance requirements against your circuit design specifications before procurement. Ensure the 1.8V supply rail stability meets the oscillator's operational needs. Confirm that the PCB footprint matches the 2.0x1.6mm SMD package dimensions to avoid assembly issues during manufacturing.

Selection Notes

Select this model when a precise 57.543667 MHz clock signal is required in space-constrained designs. The 1.8V supply requirement makes it suitable for modern low-power digital circuits. Consider the LVCMOS compatibility with your target logic family. The power-down feature offers advantages in battery-operated devices where standby current reduction is critical.

Part Context

This part belongs to the QHTF series of surface-mount oscillators from Mercury Electronics. The series typically offers various frequencies and voltage options within small form factors. The 'PD' suffix indicates the inclusion of a power-down control pin or function. This specific variant provides a non-standard frequency point for specialized synchronization needs.

Replacement Considerations

Direct replacements must match the 57.543667 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify that any substitute supports the same power-down functionality. Cross-reference with other Mercury QHTF series parts or equivalent industry components ensuring identical electrical and mechanical parameters.