18QHTF21-10.94929-PD

Overview

The 18QHTF21-10.94929-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 10.94929 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a standby or power-down function to reduce consumption during inactive periods. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm by 1.6mm. The component supports an operating temperature range suitable for industrial applications.

Feature Summary

• Supports low-voltage operation at 1.8V for energy-efficient systems
• Includes standby mode capability for power management
• Utilizes LVCMOS output logic for digital interface compatibility
• Offers a compact surface-mount footprint for space-constrained designs

Applications

• Consumer electronics requiring precise clock signals
• Industrial control systems needing stable timing references
• Communication equipment utilizing standard frequency oscillators
• Embedded systems with limited power budgets

Procurement Notes

Verify the exact frequency tolerance and load capacitance requirements against your circuit design specifications before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the PCB layout accommodates the 2.0x1.6mm SMD package dimensions and no-lead termination style. Cross-reference the part number suffix PD to confirm availability of the specific packaging variant from authorized distributors.

Selection Notes

Select this component when a fixed frequency of 10.94929 MHz is required with LVCMOS outputs. Consider the 1.8V supply constraint and ensure the application benefits from the standby feature. Evaluate the thermal performance within the specified operating temperature range. Compare against other Mercury series oscillators if different frequencies or package sizes are needed for the same project.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz-based frequency control products. The series includes various frequencies such as 51.2 MHz and 121.5 MHz, all sharing similar LVCMOS logic and 1.8V operation. Mercury has decades of experience in manufacturing quartz crystals and oscillators, positioning this part within their standard commercial-grade lineup.

Replacement Considerations

Direct substitutes may include other 10.94929 MHz LVCMOS oscillators in 2.0x1.6mm packages from manufacturers like Epson or SiTime. Verify pinout compatibility and electrical parameters such as phase noise and jitter before substitution. Ensure the replacement supports the same 1.8V supply and standby functionality.