18QHTF21-57.433667-PD

Overview

The 18QHTF21-57.433667-PD is a crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 57.433667 MHz with an LVCMOS output interface. The device supports a supply voltage of 1.8V and includes a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• Provides stable clock signal generation at specified frequency
• Integrates low-voltage CMOS output driver
• Supports power-down mode for reduced consumption

Applications

• General purpose digital circuit timing
• Microcontroller clock sources
• Communication interface synchronization

Procurement Notes

Verify the exact frequency tolerance and load capacitance requirements against your system design before ordering. Confirm that the 1.8V supply rail is stable within the operational limits. Ensure the PCB footprint matches the 4-SMD No Lead package dimensions to avoid assembly issues.

Selection Notes

Choose this component when a specific high-frequency clock of 57.433667 MHz is required with low voltage operation. Consider the LVCMOS compatibility with downstream logic levels. Evaluate the need for standby functionality if power efficiency is a critical design constraint.

Part Context

This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronics. The series typically offers various frequencies and voltage options. The suffix PD indicates the inclusion of a power-down feature, distinguishing it from continuous-operation variants.

Replacement Considerations

Direct substitutes must match the 57.433667 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD No Lead package. Verify pinout compatibility and electrical specifications before swapping.