18QHTF21-28.140-OE

Oscillators Overview

The 18QHTF21-28.140-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 28.14 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes an enable/disable control feature for power management. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

• Generates stable clock signals using LVCMOS output logic
• Supports active enable and disable control states
• Operates on a low-voltage 1.8V power supply
• Utilizes a leadless surface-mount package design

Oscillators Applications

• Digital signal processing systems
• Communication equipment timing circuits
• Embedded system clock generation
• Consumer electronics mainboards

Oscillators Procurement Notes

Verify the exact frequency tolerance and load capacitance requirements against your specific 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 and long-term performance.

Oscillators Selection Notes

Choose this component when a precise 28.14 MHz reference is required for LVCMOS-compatible digital interfaces. The 1.8V operation makes it suitable for modern low-power portable devices. Consider the enable pin functionality if dynamic power saving is necessary. The small form factor is ideal for space-constrained designs where traditional through-hole oscillators cannot fit.

Oscillators Part Context

This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronics. The series offers various frequencies within a consistent 4-SMD no-lead package. These oscillators are designed for general-purpose timing applications where stability and low cost are prioritized over ultra-high precision or extreme temperature ranges found in TCXO or OCXO variants.

Oscillators Replacement Considerations

Direct substitutes must match the 28.14 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package dimensions. Verify electrical compatibility including current consumption and enable logic levels. Cross-reference with other manufacturers offering similar surface-mount XO components to ensure pinout and mechanical compatibility.