18QHTF21-49.0909-OE

Oscillators Overview

The 18QHTF21-49.0909-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a nominal frequency of 49.0909 MHz and utilizes LVCMOS output logic. The device is designed for surface mount applications, featuring a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. It functions within a supply voltage range of 1.8V and supports an enable/disable control function. The component exhibits a frequency stability of ±50ppm and maintains operational reliability across a temperature range of -40°C to 85°C, with a maximum supply current of 23mA.

Oscillators Feature Summary

• Supports Enable/Disable functionality for power management
• Utilizes LVCMOS output logic for digital interface compatibility
• Features a compact 4-SMD No Lead surface mount package

Oscillators Applications

• General purpose clock signal generation in embedded systems
• Timing reference for digital communication interfaces
• Consumer electronics requiring low-profile timing components

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system's power rails. Ensure the PCB footprint matches the 2.0x1.6mm SMD package dimensions to prevent assembly errors. Cross-reference the operating temperature range with the environmental conditions of the final application to guarantee long-term reliability.

Oscillators Selection Notes

Select this component when a precise 49.0909 MHz clock source is required in space-constrained designs. The LVCMOS output is suitable for direct interfacing with standard digital logic families. Consider the ±50ppm stability specification for applications sensitive to timing jitter. The enable/disable feature allows for dynamic power control, making it appropriate for battery-operated devices where energy efficiency is critical.

Oscillators Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequency options within a standardized small form factor. These oscillators are engineered for high reliability and consistent performance in commercial and industrial environments. The manufacturer specializes in frequency control products, ensuring quality standards for quartz-based timing solutions.

Oscillators Replacement Considerations

Direct substitutes include other 49.0909 MHz LVCMOS oscillators in 4-SMD packages with compatible 1.8V operation. Verify pinout compatibility and electrical specifications such as current consumption and stability before substitution. Alternative parts must support the same enable/disable control mechanism if utilized in the design.