18QHTF21-7.000-OE

Overview

The 18QHTF21-7.000-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 7.000 MHz with an LVCMOS output signal format. 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, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• Provides stable 7 MHz clock generation via LVCMOS interface
• Supports active low-power operation through enable/disable pin
• Utilizes quartz crystal base resonator technology

Applications

• Digital signal processing timing references
• Microcontroller clock sources
• Communication interface synchronization

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 in the official datasheet to maintain component integrity during assembly.

Selection Notes

Select this component when a precise 7 MHz reference is required for LVCMOS-compatible logic circuits. Consider the enable/disable feature if power efficiency is critical for the application. Evaluate the 1.8V operating voltage against available power supplies. Compare the physical dimensions of the 4-SMD package against space limitations on the target board. Assess stability needs against the standard specifications provided.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, designed for general-purpose timing applications. The series typically offers various frequencies within a small form factor. Mercury Electronics specializes in quartz-based frequency control products, including crystals and oscillators, serving industries requiring reliable timing solutions.

Replacement Considerations

Direct substitutes must match the 7 MHz frequency, LVCMOS output, 1.8V supply, and 4-SMD package. Verify pinout compatibility and electrical characteristics such as current consumption and startup time. Consult manufacturer cross-reference lists for approved equivalents.