18QHTF21-10.667-PD

Overview

The 18QHTF21-10.667-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 10.667 MHz and utilizes LVCMOS output logic. 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 with dimensions of 2.0 x 1.6 mm. This component is designed for timing applications requiring precise clock signals in space-constrained electronic systems.

Feature Summary

• Supports low-voltage operation at 1.8V for efficient power consumption
• Integrates a standby mode to reduce power usage during idle periods
• Features LVCMOS output logic for direct interface with digital circuits
• Utilizes a small-footprint surface-mount package for dense PCB layouts

Applications

• Consumer electronics requiring precise timing references
• Portable devices with strict power and size constraints
• Communication modules needing stable clock signals
• Embedded systems utilizing LVCMOS-compatible interfaces

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply rail stability meets the oscillator's operational specifications. Confirm that the 4-SMD no-lead package footprint aligns with your PCB assembly capabilities. Check for any RoHS compliance documentation if required by your manufacturing standards. Validate the power-down control signal compatibility with your system's logic levels.

Selection Notes

Choose this oscillator when a 10.667 MHz frequency is specifically required for system synchronization. The 1.8V operating voltage makes it suitable for modern low-power digital designs. The integrated power-down feature is advantageous for battery-operated applications. Consider the 2.0x1.6mm package size if board real estate is limited. Ensure the LVCMOS output matches the input requirements of the connected microcontroller or FPGA.

Part Context

This component belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies and voltages, typically featuring LVCMOS outputs and compact SMD packages. The 'PD' suffix indicates the inclusion of a power-down or standby control pin. These oscillators are part of Mercury's broader portfolio of quartz-based timing solutions, including crystals, TCXOs, and VCXOs, catering to diverse industrial and consumer electronics markets.

Replacement Considerations

Direct replacements must match the 10.667 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify equivalent electrical characteristics such as phase noise and jitter if critical to the application. Ensure the replacement part also supports the power-down functionality. Cross-reference with other manufacturers offering similar SMD XO specifications.