18QHTF21-59.40706-PD

Overview

The 18QHTF21-59.40706-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 59.40706 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a standby power-down mode to reduce consumption during inactivity. It is housed in a compact 4-SMD, no-lead package, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated standby power-down functionality
• Compact 4-SMD no-lead surface mount package

Applications

• General purpose clock signal generation
• Digital communication systems
• Embedded controller timing sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions specified in the official datasheet to prevent assembly errors.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside LVCMOS signaling standards. The choice is driven by the need for a small form factor via the 4-SMD package and the necessity for power management through the standby feature. Evaluate thermal performance within the operating temperature range to ensure stability under varying environmental conditions.

Part Context

This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronics Ind. Co. Ltd. The series offers various frequency options while maintaining consistent electrical characteristics such as 1.8V operation and LVCMOS outputs. The manufacturer has extensive experience in quartz crystal production, providing reliability for frequency control applications.

Replacement Considerations

Direct substitutes include other 18QHTF21 variants with different frequencies, such as 18QHTF21-68.080-PD or 18QHTF21-38.680-PD, provided the frequency difference is acceptable. Cross-brand replacements must match the 1.8V supply, LVCMOS output, and 4-SMD no-lead package constraints.