18QHTF21-65.963-PD

Overview

The 18QHTF21-65.963-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 65.963 MHz and utilizes LVCMOS output logic levels. The device is designed for low-power applications, featuring a supply voltage of 1.8V and a standby power-down mode to reduce energy consumption during idle periods. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly on printed circuit boards.

Feature Summary

• LVCMOS output interface for digital logic compatibility
• Integrated standby power-down functionality
• Low voltage operation at 1.8V
• Surface-mount 4-SMD no-lead package

Applications

• General purpose clock signal generation
• Embedded system timing references
• Consumer electronics internal clocks
• Industrial control board synchronization

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your design specifications before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions provided in the official datasheet to guarantee proper soldering and mechanical stability.

Selection Notes

Select this component when a precise 65.963 MHz reference is required with minimal power consumption. The LVCMOS output is ideal for direct interfacing with microcontrollers and FPGAs without additional level shifting. Consider the standby feature if power management is critical. Compare against other frequencies in the 18QHTF21 series if different clock speeds are needed.

Part Context

This part belongs to the 18QHTF21 series of standard oscillators from Mercury Electronics. The series offers various frequency options while maintaining consistent electrical characteristics and package styles. The 'PD' suffix typically indicates the inclusion of a power-down pin or function, distinguishing it from standard continuous-operation variants within the same family.

Replacement Considerations

Direct replacements must match the 65.963 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility to ensure the power-down function connects correctly. Cross-reference with other manufacturers offering similar low-voltage SMD oscillators if Mercury stock is unavailable.