18QHTF21-19.9975-PD

Oscillators Overview

The 18QHTF21-19.9975-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 19.9975 MHz with an LVCMOS output signal type. The device functions at a supply voltage of 1.8V and features a power-down standby mode for energy efficiency. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm. The component supports lead-free status compliance.

Oscillators Feature Summary

• Supports low-voltage operation at 1.8V
• Includes power-down standby functionality
• Utilizes LVCMOS output interface

Oscillators Applications

• General electronic circuit timing
• Embedded system clock generation
• Portable device power management

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your design specifications before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no-lead package footprint matches your PCB layout constraints. Check for RoHS compliance documentation if required by your manufacturing standards.

Oscillators Selection Notes

Select this component when a precise 19.9975 MHz reference is needed in space-constrained designs. The 1.8V operating voltage makes it suitable for modern low-power digital logic families. Consider the power-down feature if battery life or thermal management is a critical design factor. The small 2.0x1.6mm package allows for high-density board layouts.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in frequency control products. The series typically offers various standard frequencies within a consistent small form factor. Mercury Electronics has been a pioneer in the crystal industry since 1973, providing reliable oscillators for diverse electronic applications.

Oscillators Replacement Considerations

Direct substitutes must match the 19.9975 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical characteristics such as phase noise and stability before substitution.