18QHTF21-3.428-PD

Oscillators Overview

The 18QHTF21-3.428-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a fixed frequency of 3.428 MHz and utilizes LVCMOS output logic. The device is designed for low voltage applications, requiring a supply voltage of 1.8V. It features a power-down function to manage standby current consumption effectively. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm. It complies with RoHS standards and has an MSL rating of 1.

Oscillators Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby power-down functionality for energy efficiency
• RoHS compliant construction for environmental safety

Oscillators Applications

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

Oscillators Procurement Notes

Verify the specific ordering suffix PD against the manufacturer's official documentation to ensure correct packaging and tape-and-reel specifications. Confirm that the 1.8V supply requirement aligns with your system design before procurement. Check the datasheet for precise operating temperature ranges and load capacitance requirements to guarantee signal integrity in your application.

Oscillators Selection Notes

Select this component when a 3.428 MHz clock source is required with a 1.8V supply constraint. The 2.0x1.6 mm footprint is suitable for space-constrained PCB layouts. Ensure the host circuit supports LVCMOS logic levels. Consider the power-down feature if battery life or thermal management is a priority in the final product design.

Oscillators Part Context

This part belongs to the QHTF series of surface mount crystal oscillators from Mercury Electronics. The series offers various frequencies and package sizes. The 18QHTF21 variant specifically denotes the 1.8V supply and 4-pin SMD configuration. Mercury Electronics specializes in quartz-based frequency control products including crystals, filters, and oscillators.

Oscillators Replacement Considerations

Direct substitutes include other 18QHTF21 series parts with different frequencies such as 18QHTF21-8.000-PD or 18QHTF21-50.2067-PD, provided the frequency difference is acceptable. Cross-brand replacements must match the 1.8V supply, LVCMOS output, and 2.0x1.6 mm package dimensions.