18QHTF21-14.74556-PD

Oscillators Overview

The 18QHTF21-14.74556-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 14.74556 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a standby or power-down function to manage energy consumption during inactive periods. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm, suitable for space-constrained surface-mount applications.

Oscillators Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby and power-down functionality
• Utilizes LVCMOS output logic for digital interfacing
• Available in a small 4-SMD no-lead footprint

Oscillators Applications

• Digital signal processing systems requiring precise clock timing
• Communication equipment utilizing standard frequency references
• Embedded systems with strict power management requirements
• Portable electronic devices needing compact oscillator solutions

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the system design specifications before procurement. Confirm that the 1.8V supply voltage aligns with the target circuit's power rails. Ensure the PCB layout accommodates the 4-SMD no-lead package dimensions to prevent soldering defects. Cross-reference the datasheet for any specific reflow soldering profile recommendations to maintain component integrity during assembly.

Oscillators Selection Notes

Select this component when a stable 14.74556 MHz reference is required for LVCMOS-compatible circuits. Consider the 1.8V operating voltage as a primary constraint for power supply design. The integrated power-down feature makes it suitable for battery-operated applications where standby current reduction is critical. Evaluate the physical size constraints to ensure the 2.0x1.6mm package fits within the available board area without compromising thermal or mechanical reliability.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz crystal frequency control products. The manufacturer has decades of experience in producing precision oscillators. This specific model represents a standard XO variant optimized for low-power digital applications. The series typically offers various frequency options within a consistent form factor, allowing for modular design approaches across different product lines while maintaining uniform packaging standards.

Oscillators Replacement Considerations

Direct substitutes include other 18QHTF21 series variants with identical pinouts and electrical characteristics but different frequencies, such as the 18QHTF21-51.200-PD or 18QHTF21-96.768-PD, provided the system clock requirement changes. Ensure any replacement maintains the 1.8V supply and LVCMOS output compatibility. Verify that the new frequency meets the timing accuracy needs of the application.