18QHTF21-8.190-OE

Overview

The 18QHTF21-8.190-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 8.19 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes an enable/disable control function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm.

Feature Summary

• Integrates enable and disable functionality for power management
• Utilizes LVCMOS output logic for digital interface compatibility
• Features a leadless SMD package design for surface mount applications

Applications

• General purpose clock signal generation
• Embedded system timing references
• Digital circuit synchronization

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the official datasheet before procurement. Confirm that the 1.8V supply voltage aligns with the target system's power rails. Ensure the 4-SMD no-lead footprint matches the PCB layout constraints to avoid assembly issues during manufacturing.

Selection Notes

Select this component when a low-profile, leadless oscillator is required for space-constrained designs. The integrated enable pin allows for dynamic power control, making it suitable for battery-operated devices. Verify that the LVCMOS output swing is compatible with the receiving logic levels of the connected microcontroller or FPGA.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies within a small 2.0x1.6 mm package. The series provides standard XO options with enable capabilities, catering to modern electronics requiring precise timing in minimal form factors.

Replacement Considerations

Direct substitutes include other 18QHTF21 variants with identical footprints but different frequencies, such as 18QHTF21-21.200-OE or 18QHTF21-6.76438-OE, provided the frequency difference is acceptable for the application.