18QHTF21-42.500-OE

Oscillators Overview

The 18QHTF21-42.500-OE is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a fixed frequency of 42.5 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and features an enable/disable control function. It is housed in a compact 4-SMD, No Lead package with dimensions corresponding to the SMD2016 form factor.

Oscillators Feature Summary

• Integrates LVCMOS output logic for digital interface compatibility
• Includes hardware enable and disable control functionality
• Utilizes a leadless surface-mount package design

Oscillators Applications

• General clock signal generation in electronic circuits
• Timing reference sources for low-voltage digital systems
• Embedded controller clock inputs

Oscillators Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against the target application environment before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the SMD2016 footprint matches the PCB layout constraints. Cross-reference the datasheet for precise electrical characteristics to guarantee signal integrity.

Oscillators Selection Notes

Select this component when a 42.5 MHz timing source is required for 1.8V logic families. The integrated enable pin allows for power management optimization. Consider the physical size limitations of the SMD2016 package during board design. Evaluate the need for LVCMOS compatibility versus other output types like HCMOS or CMOS based on the receiving circuit's input thresholds.

Oscillators Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz-based frequency control products. The manufacturer has decades of experience in Taiwan producing crystals and oscillators. This series typically offers standard performance levels suitable for general-purpose timing applications requiring reliable frequency stability.

Oscillators Replacement Considerations

Compatible substitutes include the 18QHTF21-42.500-PD variant from the same manufacturer family. Verify that alternative part numbers maintain identical frequency, voltage, and package specifications to ensure direct interchangeability without circuit modification.