18QHTF21-12.580-OE

Overview

The 18QHTF21-12.580-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fundamental frequency of 12.58 MHz and utilizes LVCMOS output logic for digital interfacing compatibility. The device is designed for low-voltage applications, featuring a nominal supply voltage of 1.8V. It includes an enable/disable control function to manage power consumption during idle states. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly processes. This series supports various frequencies within the standard XO category.

Feature Summary

• LVCMOS output interface for standard digital logic integration
• Integrated enable and disable control functionality
• Compact 4-SMD no-lead surface mount package design

Applications

• General purpose clock signal generation
• Low voltage digital circuit timing
• Portable electronic devices requiring small form factors

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your system design before ordering. Confirm that the 1.8V supply voltage aligns with your target platform'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 ensure reliable assembly.

Selection Notes

Select this component when a standard LVCMOS clock source is required at 12.58 MHz with a 1.8V operating voltage. The enable/disable feature makes it suitable for battery-powered applications where power management is critical. Consider the 4-SMD package size if space constraints are a primary design factor. Verify that the temperature range and stability specifications meet the environmental conditions of the intended application.

Part Context

This part belongs to the QHTF series of standard crystal oscillators from Mercury Electronics. The series offers various frequencies and supply voltages, including 1.8V, 2.5V, and 3.3V options. The 'OE' suffix typically denotes a specific packaging or tape-and-reel configuration, while 'PD' may indicate a different variant. These oscillators are commonly used in consumer electronics and industrial equipment requiring precise timing signals.

Replacement Considerations

Direct substitutes include other 12.58 MHz LVCMOS oscillators with 1.8V operation and compatible pinouts. Cross-reference with similar packages from manufacturers like Epson, IDT, or SiTime. Ensure that replacement parts match the electrical characteristics, particularly frequency accuracy and phase noise, if applicable. Verify mechanical dimensions to guarantee fit on the existing PCB.