18QHTF21-13.5665-OE

Overview

The 18QHTF21-13.5665-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 13.5665 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 digital interface compatibility
• Features an enable/disable pin for active power state control
• Provides stable timing signals via quartz crystal resonance

Applications

• Clock signal generation in embedded systems
• Timing reference for microcontrollers
• Data communication interface synchronization

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 4-SMD no-lead package footprint matches the PCB layout specifications to guarantee proper solder joint integrity during assembly.

Selection Notes

Select this component when a precise 13.5665 MHz clock source is required with low voltage operation. The integrated enable function supports power-sensitive applications requiring dynamic clock gating. Consider the small form factor suitable for space-constrained designs while ensuring the LVCMOS output levels are compatible with the receiving logic inputs.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series typically offers various frequencies and voltage options within a standardized 2.0x1.6mm package. The -OE suffix indicates the inclusion of an enable/disable control feature, distinguishing it from standard continuous-output variants in the same family.

Replacement Considerations

Direct substitutes include other 18QHTF21 series parts with identical 13.5665 MHz frequency and 1.8V operation, such as the 18QHTF21-13.5665 without the OE suffix if enable functionality is not critical. Verify pinout compatibility and thermal characteristics when cross-referencing with alternative manufacturers' offerings.