18QHTF21-9.900-PD

Overview

The 18QHTF21-9.900-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a fixed frequency of 9.9 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and features a standby (power down) function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. The maximum current consumption is specified as 21mA. This component is designed for precise timing applications requiring low power operation and small form factor integration.

Feature Summary

• Supports standby mode for power reduction
• Compact surface-mount package design
• LVCMOS output compatibility

Applications

• General purpose clock generation
• Low power embedded systems
• Consumer electronics timing circuits

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 PCB footprint matches the 4-SMD, No Lead package dimensions to avoid assembly issues. Check for any specific handling instructions regarding electrostatic discharge protection during installation.

Selection Notes

Select this component when a 9.9 MHz clock signal is required with minimal power consumption. The LVCMOS interface ensures compatibility with standard digital logic families. Consider the physical size constraints of the application, as the 2.0x1.6mm package is suitable for space-sensitive designs. Evaluate if the standby feature provides sufficient power savings for battery-operated devices compared to continuously running oscillators.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies within the same package. The series includes models like 18QHTF21-8.000-PD and 18QHTF21-51.200-PD, sharing similar electrical characteristics and packaging. Mercury Electronics specializes in quartz crystals and oscillators, providing reliable timing solutions for industrial and consumer markets.

Replacement Considerations

Direct substitutes may include other 9.9 MHz LVCMOS oscillators in 4-SMD packages from different manufacturers. Verify pinout compatibility and voltage levels when cross-referencing. Ensure the replacement meets the same current consumption and temperature range specifications.