18QHTF21-57.737-PD

Overview

The 18QHTF21-57.737-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 57.737 MHz and utilizes LVCMOS output logic. The device requires a supply voltage of 1.8V and features a standby mode for power down functionality. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications.

Feature Summary

• Supports low-power standby operation via power-down control
• Delivers standard LVCMOS signal output compatibility
• Utilizes a leadless SMD package for board space efficiency

Applications

• General digital clock generation
• Embedded system timing references
• Consumer electronics circuit synchronization

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your design specifications before procurement. Confirm that the 1.8V supply rail is stable and within the operational limits defined in the official datasheet to ensure reliable oscillator performance and longevity.

Selection Notes

Select this component when a precise 57.737 MHz reference is required with minimal footprint constraints. Ensure the host circuit supports LVCMOS input thresholds and can manage the standby control signal effectively. Consider thermal management and supply noise immunity given the low-voltage operation.

Part Context

This part belongs to the Mercury Electronics XO series, which provides standard frequency solutions. The 18QHTF21 variant specifically denotes a 4-pin leadless SMD form factor. It is distinct from differential or voltage-controlled oscillator families offered by the manufacturer.

Replacement Considerations

Direct substitutes must match the 57.737 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package dimensions. Verify pinout compatibility and electrical characteristics before swapping manufacturers.