18QHTF21-19.84375-OE

Oscillators Overview

The 18QHTF21-19.84375-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind., Co., Ltd. It operates at a frequency of 19.84375 MHz and utilizes LVCMOS output logic levels. The device is designed for low-voltage applications, functioning at 1.8V. It features an enable/disable control function to manage power consumption. The component is housed in a compact 4-SMD surface-mount package with dimensions of 2.0x1.6 mm. This specific variant does not include lead material.

Oscillators Feature Summary

• Supports LVCMOS output interface for digital compatibility
• Includes enable and disable functionality for power management
• Utilizes a compact 4-SMD surface-mount package design

Oscillators Applications

• Embedded systems requiring precise clock signals
• Consumer electronics utilizing low-voltage logic
• Industrial control modules needing stable timing references

Oscillators Procurement Notes

Verify the exact frequency tolerance and load capacitance requirements against the specific application circuit before procurement. Confirm that the 1.8V supply voltage aligns with the target system's power rails. Ensure the PCB footprint matches the 2.0x1.6 mm SMD package dimensions. Check for any specific environmental operating temperature ranges required by the end product. Validate that the enable pin logic levels are compatible with the controlling microcontroller or FPGA.

Oscillators Selection Notes

Select this component when a 19.84375 MHz clock source is strictly required within a 1.8V powered environment. Consider the enable feature if dynamic power saving is necessary during idle states. The small form factor makes it suitable for space-constrained designs. Compare against other variants in the 18QHTF21 series if different frequencies or voltage levels are needed. Ensure the LVCMOS output swing meets the input requirements of the downstream logic devices.

Oscillators Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which focuses on low-profile surface-mount crystal oscillators. The series typically offers various standard frequencies optimized for digital communication and processing interfaces. Mercury Electronic Ind., Co., Ltd. has established itself as a pioneer in quartz crystal manufacturing in Taiwan since 1973, providing reliable frequency control solutions for global electronics markets.

Oscillators Replacement Considerations

Direct substitutes may include other 19.84375 MHz LVCMOS oscillators in 4-SMD 2.0x1.6 packages from manufacturers such as Epson, NDK, or TXC. Verify electrical compatibility regarding voltage, current consumption, and output drive strength. Mechanical fit must be confirmed for the 2.0x1.6 mm footprint. Alternative part numbers like those from the same manufacturer with different suffixes may offer varied tolerances or temperatures.