18QHTF21-49.450-OE

Overview

The 18QHTF21-49.450-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 49.45 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and features an enable/disable control pin for power management. It is housed in a compact 4-SMD, no lead package with dimensions of 2.0x1.6 mm. This component is designed for applications requiring precise timing signals within low-power electronic systems.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes enable/disable functionality for power efficiency
• Compact surface-mount design suitable for space-constrained layouts

Applications

• General purpose clock generation in embedded systems
• Timing reference for data communication interfaces
• Power-sensitive portable electronic devices

Procurement Notes

Verify the specific suffix OE against the manufacturer's current documentation to ensure correct packaging and availability status. Confirm that the 1.8V supply requirement aligns with the target system's power rails. Check for any recent revisions to the datasheet regarding thermal or electrical specifications before finalizing procurement orders.

Selection Notes

Select this component when a 49.45 MHz frequency is required with low-voltage operation. Ensure the host circuit supports LVCMOS logic levels. Consider the small 2.0x1.6 mm footprint for PCB layout constraints. Verify that the enable pin can be properly controlled by the system microcontroller or power management unit.

Part Context

This part belongs to the Mercury Electronics XO series, which provides standard clock oscillators. The brand specializes in frequency control products including quartz crystals and TCXOs. The 18QHTF21 series indicates a specific family of surface-mount oscillators designed for modern electronics requiring miniaturization and low power consumption.

Replacement Considerations

Cross-reference with other 49.45 MHz LVCMOS oscillators in 4-SMD packages. Ensure compatible supply voltage and output logic. Verify mechanical footprint compatibility for direct replacement.