18QHTF21-75.630-OE

Overview

The 18QHTF21-75.630-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 75.63 MHz and utilizes LVCMOS output logic levels. The device is designed for low-voltage applications, requiring a supply voltage of 1.8V. It features an enable/disable control function to manage power consumption. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm. This surface-mount oscillator is suitable for space-constrained electronic designs requiring precise timing signals.

Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated enable/disable control functionality
• Compact 4-SMD no-lead surface mount package
• Low voltage operation at 1.8V

Applications

• Digital signal processing circuits
• Communication equipment clocking
• Embedded system timing references
• Consumer electronics mainboards

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 PCB footprint matches the 2.0x1.6mm SMD package dimensions. Check for any specific reflow soldering profile recommendations provided by the manufacturer to ensure reliable assembly and long-term performance.

Selection Notes

Select this component when a 75.63 MHz clock source is required with LVCMOS outputs. Consider the 1.8V operating voltage constraint for power budgeting. The small 2.0x1.6mm package makes it suitable for high-density layouts. Evaluate the enable pin utility for power management strategies. Compare alternative frequencies if the exact 75.63 MHz is not strictly necessary.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which focuses on low-voltage, small-footprint timing solutions. The series typically includes various frequencies within the same physical package. Mercury Electronics is a established manufacturer of quartz crystal products, offering a range of oscillators for diverse electronic applications. The OE suffix likely denotes a specific packaging or tape-and-reel configuration.

Replacement Considerations

Direct replacements must match the 75.63 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical characteristics such as phase noise and jitter. Consult the manufacturer's cross-reference list for approved substitutes. Ensure any replacement part maintains the same enable/disable functionality.