18QHTF21-9.49453-PD

Overview

The 18QHTF21-9.49453-PD is a crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 9.49453 MHz with an LVCMOS output signal. The device supports a supply voltage of 1.8V and includes a standby or power-down function. It is housed in a compact 4-SMD, No Lead package.

Feature Summary

• Supports low-voltage operation at 1.8V
• Features LVCMOS output compatibility
• Includes standby and power-down functionality

Applications

• Digital signal processing systems
• Communication equipment requiring precise timing
• Embedded control circuits

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no-lead package footprint matches your PCB layout constraints to guarantee proper assembly and electrical connection.

Selection Notes

Select this component when a stable 9.49453 MHz reference is required for LVCMOS interfaces. Consider the 1.8V operating voltage and power-down capability for energy-efficient designs. Evaluate the small form factor suitability for space-constrained applications compared to larger oscillator packages.

Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series typically offers standard frequency options with LVCMOS outputs. The 'PD' suffix indicates the inclusion of a power-down feature, distinguishing it from non-power-managed variants within the same family.

Replacement Considerations

Direct substitutes must match the 9.49453 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility and thermal characteristics. Cross-reference with other manufacturers offering identical specifications if Mercury Electronics availability is limited.