18QHTF21-12.300-OE

Overview

The 18QHTF21-12.300-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 12.3 MHz with an LVCMOS output logic level. The device requires a 1.8V supply voltage and features an Enable/Disable control function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.

Feature Summary

• Integrates Enable/Disable functionality for power management
• Utilizes LVCMOS output logic for digital interface compatibility
• Designed in a small form factor surface-mount package

Applications

• General clock signal generation in embedded systems
• Timing reference for microcontrollers requiring 1.8V logic
• Portable electronic devices utilizing space-constrained SMD components

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply rail stability meets the oscillator's specifications to maintain frequency accuracy. Confirm that the PCB footprint matches the 2.0x1.6mm 4-SMD no-lead package dimensions provided in the official datasheet.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a standard LVCMOS interface. The integrated enable pin allows for system-level power saving strategies. Consider the 12.3 MHz frequency point specifically if it aligns with your system clock division needs or peripheral timing constraints without requiring additional dividers.

Part Context

This part belongs to the 18QHTF21 series of standard oscillators from Mercury Electronics. The series typically offers various frequencies within a consistent 2.0x1.6mm package profile. The 'OE' suffix indicates the presence of an enable/disable control pin, distinguishing it from basic continuous-output variants in the same physical footprint family.

Replacement Considerations

Direct replacements must match the 12.3 MHz frequency, 1.8V supply, LVCMOS output, and 2.0x1.6mm 4-SMD package. Verify that substitute parts also include the enable/disable functionality if system power management depends on it. Cross-reference pinouts to ensure compatibility with existing PCB layouts.