18QHTF21-6.536-OE

Overview

The 18QHTF21-6.536-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 6.536 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes an enable/disable control feature for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.

Feature Summary

• Integrates LVCMOS output logic for direct digital interface compatibility
• Features an enable/disable pin for active power management
• Utilizes a surface-mount package design suitable for automated assembly

Applications

• General purpose clock signal generation in embedded systems
• Timing reference for microcontrollers and processors
• Data communication interfaces requiring stable clock sources

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 power rails. Ensure the PCB footprint matches the 4-SMD No Lead package dimensions to prevent assembly errors. Cross-reference the datasheet for operating temperature range compliance.

Selection Notes

Select this component when a low-voltage, small-footprint clock source is required for digital logic circuits. The LVCMOS output ensures compatibility with standard CMOS inputs without additional level shifting. Consider the enable function if power conservation during idle states is a priority. Verify that the 6.536 MHz frequency meets the specific timing requirements of the application.

Part Context

This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronics. The series offers various frequencies within a consistent 2.0x1.6mm form factor. These components are designed for applications requiring precise timing in consumer electronics and industrial equipment. The manufacturer specializes in quartz-based frequency control solutions.

Replacement Considerations

Direct substitutes include other 6.536 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation. Verify equivalent electrical parameters such as phase noise and stability before substitution. Ensure the replacement part supports the enable/disable functionality if required by the design.