18QHTF21-10.173958-PD

Overview

The 18QHTF21-10.173958-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 10.173958 MHz with an LVCMOS output logic level. The device requires a 1.8V supply voltage 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 3.2mm x 2.5mm. The component is designed for surface-mount assembly and supports industrial temperature ranges typical for electronic timing applications.

Feature Summary

• Supports low-voltage operation at 1.8V with LVCMOS output compatibility
• Includes integrated standby and power-down functionality for power efficiency
• Utilizes a leadless SMD package for automated surface-mount processing

Applications

• Digital signal processing clock sources
• Communication interface timing circuits
• Microcontroller system oscillators

Procurement Notes

Verify the specific ordering suffix to confirm the exact frequency tolerance and load capacitance requirements. Ensure the procurement channel provides original manufacturer documentation to validate the 1.8V supply specification and LVCMOS output characteristics. Confirm that the 4-SMD no-lead package matches the target PCB footprint design before finalizing orders.

Selection Notes

Select this component when a precise 10.173958 MHz reference is required for LVCMOS-compatible digital systems. The 1.8V operating voltage makes it suitable for low-power portable devices. Engineers must verify that the 3.2mm x 2.5mm package dimensions fit within the available board space constraints and thermal management requirements.

Part Context

This part belongs to the Mercury 18QHTF21 series of standard crystal oscillators. The series offers various frequencies with consistent LVCMOS outputs and low-voltage operation. The 'PD' suffix indicates the inclusion of power-down capabilities, distinguishing it from standard continuous-operation variants within the same physical package family.

Replacement Considerations

Direct replacements must match the 10.173958 MHz frequency, 1.8V supply, and LVCMOS output type. Verify that substitute components support the same 4-SMD no-lead package dimensions and offer comparable standby functionality. Cross-reference datasheets to ensure identical electrical performance parameters.