18QHTF21-19.879-PD

Oscillators Overview

The 18QHTF21-19.879-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 19.879 MHz and utilizes LVCMOS output logic levels. The device is designed for a supply voltage of 1.8V and features a power-down capability via a standby control input. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm, suitable for space-constrained surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

• Supports low-voltage operation at 1.8V for energy-efficient systems
• Includes standby function to enable power-down mode
• Delivers standard LVCMOS output signal integrity

Oscillators Applications

• Embedded systems requiring precise clock synchronization
• Portable electronic devices utilizing low-power components
• Communication modules needing stable frequency references

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 2.0x1.6 mm footprint matches your PCB layout constraints. Check for any specific reflow soldering profile recommendations provided by the manufacturer to ensure reliable assembly of the no-lead package.

Oscillators Selection Notes

Select this component when a 19.879 MHz reference is required with minimal power consumption. The integrated power-down feature makes it suitable for battery-operated devices where standby current reduction is critical. Compare its size against other oscillators if board real estate is limited. Ensure compatibility with LVCMOS interfaces in your target microcontroller or FPGA.

Oscillators Part Context

Mercury Electronics Ind. Co. Ltd specializes in frequency control products, including quartz crystals and oscillators. This model belongs to their series of surface-mount crystal oscillators designed for modern electronics. The company has a history of manufacturing quartz-based timing components, positioning this part within their portfolio of standard XO solutions for various industrial and consumer applications.

Oscillators Replacement Considerations

Direct substitutes must match the 19.879 MHz frequency, 1.8V supply, LVCMOS output, and 2.0x1.6mm package. Verify pinout compatibility and electrical characteristics such as phase noise and stability before substitution.