18QHTF21-57.403667-PD

Overview

The 18QHTF21-57.403667-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 57.403667 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and features a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 5.0 x 3.2 mm.

Feature Summary

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

Applications

• General electronic systems requiring precise clock signals
• Embedded devices utilizing LVCMOS interfaces
• Portable electronics benefiting from low-power standby modes

Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against your system design before procurement. Confirm that the 1.8V supply voltage aligns with your target circuit's power rails. Ensure the 5.0x3.2mm SMD footprint matches your PCB layout constraints. Cross-reference the part number suffix to confirm the exact frequency tolerance and stability specifications required for your application.

Selection Notes

Select this component when a stable 57.403667 MHz clock source is needed for LVCMOS-compatible circuits. Consider the 1.8V supply requirement and the availability of a power-down pin for power-sensitive designs. Evaluate the physical size constraints against the 5.0x3.2mm package dimensions. Compare performance metrics such as phase noise and jitter if available in official documentation to ensure compatibility with signal integrity requirements.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies within a standardized 4-SMD no-lead form factor. The series typically provides options for different supply voltages and output types, allowing designers to maintain consistent mechanical footprints across different frequency requirements while adapting electrical characteristics.

Replacement Considerations

Direct replacements must match the 57.403667 MHz frequency, 1.8V supply, LVCMOS output, and 5.0x3.2mm package. Verify that substitute components support the same standby/power-down functionality. Check for equivalent thermal and electrical specifications to ensure seamless integration without redesigning the host circuit.