18QHTF21-10.025-PD

Overview

The 18QHTF21-10.025-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 10.025 MHz and utilizes LVCMOS output logic. The device is designed for low-power applications, featuring a supply voltage of 1.8V and a standby power-down mode. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0mm x 1.6mm.

Feature Summary

• Supports standby power-down mode for energy efficiency
• Utilizes LVCMOS output logic for digital interface compatibility
• Compact surface-mount package design

Applications

• Low-power consumer electronics
• Portable devices requiring precise timing
• Digital signal processing circuits

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 constraints. Check for any specific RoHS compliance documentation if required by your manufacturing standards.

Selection Notes

Select this component when a stable 10.025 MHz reference is needed with minimal power consumption. The LVCMOS output is suitable for direct interfacing with standard digital logic families. Consider the 1.8V operating voltage to ensure compatibility with modern low-voltage systems. The small form factor makes it ideal for space-constrained designs.

Part Context

This part belongs to the QHTF series of crystal oscillators from Mercury Electronics. The series offers various frequencies and voltages, including 2.5V options like the 25QHTF21 model. The 'PD' suffix indicates the inclusion of a power-down feature, distinguishing it from standard continuous-operation variants within the same package family.

Replacement Considerations

Direct substitutes may include other 10.025 MHz LVCMOS oscillators in a 2.0x1.6mm SMD package. Verify pinout compatibility and electrical specifications such as phase noise and jitter before substitution. Alternative parts from different manufacturers must match the 1.8V supply requirement.