18QHTF21-27.78726-OE

Oscillators Overview

The 18QHTF21-27.78726-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 27.78726 MHz with an LVCMOS output logic level. The device is designed for low-voltage applications, utilizing a 1.8V supply voltage. It features an enable/disable control function for power management flexibility. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm, suitable for space-constrained surface-mount designs.

Oscillators Feature Summary

• LVCMOS output interface for digital circuit compatibility
• Integrated enable/disable pin for power control
• Compact 4-SMD no-lead surface mount package

Oscillators Applications

• Digital signal processing systems requiring precise clocking
• Communication equipment operating at 1.8V logic levels
• Portable electronic devices with space constraints

Oscillators Procurement Notes

Verify the exact frequency tolerance and load capacitance requirements against the specific datasheet for the 18QHTF21-27.78726-OE variant before procurement. Ensure that the supply voltage remains stable at 1.8V to maintain signal integrity. Confirm that the PCB footprint matches the 2.0x1.6mm 4-SMD no-lead package specifications to avoid assembly issues.

Oscillators Selection Notes

Select this component when a 27.78726 MHz clock source is required for 1.8V LVCMOS circuits. The enable/disable feature makes it suitable for battery-powered applications where power conservation is critical. Consider the small form factor for high-density board layouts. Verify temperature range compliance if the application involves extreme environmental conditions.

Oscillators Part Context

This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronics. The series typically offers various frequencies within a standardized 1.8V LVCMOS format. The 'OE' suffix often denotes specific packaging or tape-and-reel configurations, though functional characteristics remain consistent across the series for the same base model number.

Oscillators Replacement Considerations

Direct replacements must match the 27.78726 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Cross-reference with other manufacturers offering similar low-profile oscillators, ensuring electrical parameters align precisely to avoid signal degradation.