18QHTF21-9.49453-OE

Overview

The 18QHTF21-9.49453-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 9.49453 MHz and utilizes LVCMOS output logic levels. The device is designed for a supply voltage of 1.8V and includes an enable/disable control function. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• LVCMOS output interface for digital logic compatibility
• Integrated enable/disable pin for power management
• Compact 4-SMD no-lead surface mount package

Applications

• General purpose timing circuits
• Embedded systems clock sources
• Consumer electronics timing references

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 4-SMD footprint matches your PCB layout constraints. Cross-reference the OE suffix with manufacturer documentation to confirm any specific ordering or packaging variations.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a standard LVCMOS output. The enable/disable feature makes it suitable for battery-powered devices where power conservation is critical. Consider the small form factor of the 4-SMD package for space-constrained designs. Verify that the 9.49453 MHz frequency meets the specific data rate or clocking needs of the target application.

Part Context

Mercury Electronic Industrial Co., Ltd. is a quartz crystal manufacturer with a history dating back to 1973, recognized as a pioneer in Taiwan's crystal industry. The company specializes in frequency control products including crystals, oscillators, and low EMI spread spectrum devices. This part belongs to their line of standard XO oscillators designed for reliable timing performance.

Replacement Considerations

Direct substitutes must match the 9.49453 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Check for equivalent enable/disable functionality. Verify temperature range and stability specifications against the original datasheet to ensure performance parity.