18QHTF21-109.99995-PD

Overview

The 18QHTF21-109.99995-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 109.99995 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby (power down) function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm. This component is designed for applications requiring precise clock signals within a small form factor.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby mode to reduce power consumption during idle periods
• Utilizes a leadless SMD package for surface-mount assembly

Applications

• General purpose clock signal generation
• Embedded systems requiring low-voltage operation
• Portable electronic devices with space constraints

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 4-SMD no-lead package footprint matches your PCB layout specifications. Check for any RoHS compliance documentation if required by your manufacturing standards.

Selection Notes

Select this model when a 109.99995 MHz clock source is required with LVCMOS outputs. Consider the 1.8V operating voltage and standby feature for power-sensitive designs. The 2.0x1.6 mm package size is suitable for high-density board layouts. Evaluate thermal performance and stability needs relative to the standard oscillator category.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which focuses on small-sized surface-mount oscillators. The series typically offers various frequencies and voltage options. The 'PD' suffix indicates the inclusion of a power-down pin or functionality. Mercury Electronics has a long history in quartz crystal manufacturing, providing frequency control solutions.

Replacement Considerations

Direct substitutes may include other 109.99995 MHz LVCMOS oscillators in a 4-SMD 2.0x1.6mm package. Verify electrical parameters such as supply voltage, current consumption, and output swing. Ensure mechanical compatibility with the existing footprint. Cross-reference with similar series from Mercury or other manufacturers offering comparable form factors.