18QHTF21-1.9584-PD

Overview

The 18QHTF21-1.9584-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 1.9584 MHz and utilizes LVCMOS output logic levels. 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 assembly.

Feature Summary

• LVCMOS output interface for digital logic compatibility
• Integrated standby mode for power reduction
• Low voltage operation at 1.8V

Applications

• Battery-powered portable devices
• Clock signal generation in low-voltage circuits
• General-purpose timing applications requiring stable frequencies

Procurement Notes

Verify the specific ordering suffix to ensure correct frequency and package configuration. Confirm that the 1.8V supply requirement aligns with the target system design. Check datasheet specifications for load capacitance and drive strength requirements before integration.

Selection Notes

Select this component when a precise 1.9584 MHz clock source is required in space-constrained designs. The 4-SMD no-lead package facilitates automated assembly. Ensure the application environment supports the specified 1.8V operating voltage range.

Part Context

This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronics. The series offers various frequency options within a standardized small outline package format, providing consistent performance characteristics across different model variants.

Replacement Considerations

Direct substitutes include other 1.9584 MHz LVCMOS oscillators in 4-SMD packages from manufacturers such as Epson, NDK, or SiTime, provided pinout and electrical specifications match.