18QHTF21-9.509-PD

Overview

The 18QHTF21-9.509-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 9.509 MHz and utilizes LVCMOS output logic levels. The device is designed for operation with a supply voltage of 1.8V and features a power-down mode accessible via a standby control pin. The component is housed in a compact 4-SMD, No Lead package suitable for surface-mount applications.

Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby functionality for power management
• Utilizes LVCMOS output interface

Applications

• General clock signal generation
• Embedded system timing references
• Consumer electronics circuit boards

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.

Selection Notes

Select this component when a precise 9.509 MHz reference is required in space-constrained designs. Consider the 1.8V operating voltage and LVCMOS compatibility with downstream digital logic. Ensure the application supports the standby control feature if power efficiency is a priority.

Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series typically offers various standard frequencies and voltage options. The 'PD' suffix indicates the inclusion of a power-down or standby control capability, distinguishing it from non-controlled variants.

Replacement Considerations

Direct substitutes must match the 9.509 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify pinout compatibility and thermal characteristics before swapping with other manufacturers' offerings.