18QHTF21-111.650837-PD

Overview

The 18QHTF21-111.650837-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 111.650837 MHz and utilizes LVCMOS output logic levels. The device supports a supply voltage of 1.8V and features an enable/disable control function for power management. It is housed in a compact 4-SMD surface-mount package without lead, designed for integration into space-constrained electronic circuits requiring precise clock signals.

Feature Summary

• LVCMOS output interface for digital logic compatibility
• Enable/Disable control pin for power management
• Compact 4-SMD no-lead surface mount package

Applications

• Digital signal processing systems
• Communication equipment clocking
• Embedded system timing references

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to ensure correct frequency tolerance and load capacitance specifications. Confirm that the 1.8V supply requirement aligns with the target circuit design. Check for any industry-specific certifications required for the intended application environment before finalizing procurement orders.

Selection Notes

Select this component when a precise 111.650837 MHz clock source is required with low voltage operation. Ensure the host circuit provides stable 1.8V power and supports the LVCMOS input thresholds. Consider the 4-SMD footprint dimensions during PCB layout to maintain signal integrity and mechanical stability within the assembly constraints.

Part Context

This part belongs to the 18QHTF21 series of standard oscillators from Mercury Electronics. The series typically offers various frequency options within a standardized 4-SMD package form factor. These components are designed for general-purpose timing applications where size efficiency and standard logic compatibility are prioritized over ultra-low phase noise performance.

Replacement Considerations

Direct substitutes must match the 111.650837 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify electrical parameters such as frequency tolerance and operating temperature range against the original specification sheet before substitution.