18QHTF21-25.173-PD

Oscillators Overview

The 18QHTF21-25.173-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 25.173 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

• LVCMOS output logic interface
• Integrated standby and power-down functionality
• Standard crystal oscillator design

Oscillators Applications

• General purpose digital clock generation
• Embedded system timing references
• Consumer electronics control circuits

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. 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 specifications to guarantee proper soldering and mechanical stability during assembly.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside standard LVCMOS compatibility. The inclusion of a power-down feature makes it suitable for battery-operated devices where standby current reduction is critical. Consider the 4-SMD form factor for space-constrained designs needing reliable surface-mount integration without through-hole constraints.

Oscillators Part Context

This part belongs to the 18QHTF21 series of standard oscillators from Mercury Electronics. The series offers various frequencies within the SMD package family. The PD suffix typically indicates specific packaging or handling characteristics defined by the manufacturer. This model provides a fixed frequency solution for applications requiring stable clock sources without the complexity of programmable alternatives.

Oscillators Replacement Considerations

Direct substitutes include other 18QHTF21 series variants with matching frequencies such as 18QHTF21-25.000-PD if frequency adjustment is acceptable. Cross-reference with other manufacturers offering 1.8V LVCMOS oscillators in 4-SMD packages, ensuring identical pinout and electrical parameters are maintained for seamless integration.