18QHTF21-40.250-OE

Oscillators Overview

The 18QHTF21-40.250-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 40.25 MHz and utilizes LVCMOS output logic. The device is designed for low voltage applications with a supply voltage of 1.8V. It features an enable/disable control function to manage power consumption. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.

Oscillators Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes enable/disable functionality for power management
• Utilizes a surface-mount package design for automated assembly

Oscillators Applications

• General clock signal generation in electronic circuits
• Timing reference for digital systems requiring 1.8V operation
• Embedded devices utilizing standard crystal oscillators

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system's power rails. Ensure the 4-SMD no-lead package footprint matches the PCB layout specifications. Check for any specific manufacturing date codes or lot traceability requirements if applicable to the production environment.

Oscillators Selection Notes

Select this component when a precise 40.25 MHz timing source is required for low-voltage digital logic. The LVCMOS output is suitable for direct interfacing with standard CMOS inputs without additional buffering. Consider the enable pin feature if dynamic power saving is necessary. The small form factor makes it appropriate for space-constrained portable or dense board designs.

Oscillators Part Context

This part belongs to the standard XO series from Mercury Electronics, which specializes in quartz frequency control products. The manufacturer has decades of experience in producing crystals and oscillators. This specific model represents a single-ended output oscillator variant within their SMD portfolio, distinct from differential or temperature-compensated types.

Oscillators Replacement Considerations

Direct substitutes must match the 40.25 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm footprint. Verify pinout compatibility and electrical parameters such as phase noise and jitter if critical. Cross-reference with other manufacturers offering identical package and specification profiles.