18QHTF21-117.765-PD

Overview

The 18QHTF21-117.765-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 117.765 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, designed for surface-mount applications requiring precise timing signals.

Feature Summary

• Supports low-voltage operation with integrated power-down capability
• Provides stable clock signals via LVCMOS output interface
• Utilizes lead-free surface-mount packaging for automated assembly

Applications

• Digital signal processing systems
• Communication equipment timing circuits
• Embedded system clock generation

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no-lead footprint matches your PCB layout constraints. Check for any RoHS compliance documentation if required by your manufacturing standards.

Selection Notes

Select this component when a 117.765 MHz clock source is required with low power consumption features. The LVCMOS output is suitable for direct interfacing with digital logic families operating at 1.8V. Consider the thermal characteristics of the SMD package for high-density board layouts. Evaluate the standby feature benefits for battery-powered or energy-efficient designs.

Part Context

This part belongs to the 18QHTF21 series of standard oscillators from Mercury Electronics. The series offers various frequencies within a small form factor. Mercury Electronics specializes in quartz-based frequency control products, including crystals and oscillators, with a long history in the industry.

Replacement Considerations

Direct substitutes must match the 117.765 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify pin compatibility and electrical specifications such as phase noise and jitter if critical. Cross-reference with other manufacturers offering similar surface-mount XO solutions.