18QHTF21-25.7815-OE

Oscillators Overview

The 18QHTF21-25.7815-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 25.7815 MHz and utilizes LVCMOS output logic levels. The device requires a supply voltage of 1.8V and features an enable/disable control function for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm. The unit supports an operating temperature range from -40°C to 85°C and maintains a frequency stability of ±50ppm.

Oscillators Feature Summary

• Compact 4-SMD no-lead surface mount package
• LVCMOS output signal compatibility
• Integrated enable and disable control functionality
• Wide industrial operating temperature range

Oscillators Applications

• Digital signal processing clock sources
• Communication interface timing circuits
• Embedded system master clocks
• Consumer electronics timing references

Oscillators 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 footprint matches your PCB layout constraints. Check for any specific reflow soldering profile recommendations provided by the manufacturer to ensure reliable assembly.

Oscillators Selection Notes

Select this component when a precise 25.7815 MHz reference is required in space-constrained designs. The low-profile package suits applications with strict height limitations. Consider the ±50ppm stability for general-purpose digital timing rather than high-precision RF applications. The enable pin allows for dynamic power saving in battery-operated devices.

Oscillators Part Context

This model belongs to the 18QHTF21 series of miniature oscillators from Mercury Electronics. The series offers various frequencies within a small form factor. These components are designed for modern portable electronics where size and power efficiency are critical. The OE suffix typically indicates specific packaging or testing configurations.

Oscillators Replacement Considerations

Direct replacements must match the 25.7815 MHz frequency, 1.8V supply, and 4-SMD no-lead package. Verify pinout compatibility and electrical characteristics such as current consumption and startup time. Cross-reference with other manufacturers offering similar LVCMOS oscillators in the same footprint.