18QHTF21-9.864-PD

Overview

The 18QHTF21-9.864-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 9.864 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and features a Standby (Power Down) function for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby mode functionality to reduce power consumption
• Designed for low voltage operation at 1.8V

Applications

• Battery-powered portable devices
• General purpose clock signal generation
• Digital circuit timing references

Procurement Notes

Verify the specific suffix 'PD' indicates the Standby feature when sourcing replacements. Confirm the 1.8V supply requirement matches the target system design. Ensure the 4-SMD no-lead package footprint aligns with the PCB layout specifications before finalizing procurement orders.

Selection Notes

Select this component when a 9.864 MHz clock source is required with low power consumption capabilities. The 1.8V operating voltage makes it suitable for modern low-voltage digital systems. The standby feature provides additional energy efficiency for battery-operated applications compared to non-stby variants.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies within a small 2.0x1.6mm package. The series supports both enable/disable and standby functions across different output voltages, providing flexible timing solutions for compact electronic designs requiring precise frequency control.

Replacement Considerations

Direct substitutes include other 18QHTF21 series parts with identical 1.8V and PD specifications but different frequencies, such as 18QHTF21-51.200-PD or 18QHTF21-96.768-PD, provided the frequency difference is acceptable for the application.