18QHTF21-19.950-OE

Oscillators Overview

The 18QHTF21-19.950-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 19.95 MHz and utilizes an LVCMOS output signal format. The device supports a supply voltage of 1.8V and includes an enable/disable control function for power management. It is housed in a compact 4-SMD, no lead package with dimensions of 2.0x1.6 mm.

Oscillators Feature Summary

• Standard crystal oscillator design
• LVCMOS output interface
• Integrated enable/disable control

Oscillators Applications

• Timing and clock signal generation
• Electronic device synchronization
• Embedded system clock sources

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system's power rails. Ensure the 4-SMD no-lead package footprint matches the PCB layout specifications to guarantee proper soldering and mechanical stability during assembly.

Oscillators Selection Notes

Select this component when a precise 19.95 MHz clock source is required for low-voltage digital circuits. The integrated enable feature allows for dynamic power control, making it suitable for battery-operated or energy-efficient applications. Verify compatibility with the host controller's input logic levels and ensure the operating temperature range meets the environmental conditions of the final product.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in frequency control products. The series offers various standard frequencies in a small surface-mount package. Mercury Electronics has been a pioneer in the crystal industry since 1973, providing reliable timing solutions for global electronic manufacturing.

Oscillators Replacement Considerations

Direct substitutes include other 19.95 MHz XO components with LVCMOS outputs and 1.8V operation in a 2.0x1.6mm SMD package. Cross-reference pinouts and electrical characteristics carefully to ensure functional equivalence without modifying the existing circuit design.