18QHTF21-21.7725-OE

Oscillators Overview

The 18QHTF21-21.7725-OE is a crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 21.7725 MHz and utilizes LVCMOS output logic. The device requires a supply voltage of 1.8V 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. The component is designed for standard timing applications within specified temperature ranges.

Oscillators Feature Summary

• Supports enable and disable functionality for power management
• Utilizes LVCMOS output logic for digital interface compatibility
• Compact surface-mount package design for space-constrained layouts

Oscillators Applications

• General digital timing circuits
• Embedded systems requiring precise clock signals
• Consumer electronics with low-voltage requirements

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply voltage aligns with your system's power rails. Confirm that the enable pin logic levels are compatible with your microcontroller or driver outputs to prevent unintended oscillation states during operation.

Oscillators Selection Notes

Select this component when a 21.7725 MHz clock signal is required with low voltage operation. Consider the 2.0x1.6mm footprint for PCB layout constraints. Evaluate the need for enable/disable control if power saving modes are part of the system architecture. Compare performance against other Mercury Electronics models in the QHTF series for similar form factors.

Oscillators Part Context

This oscillator belongs to the QHTF series from Mercury Electronics, which focuses on small-footprint quartz crystal oscillators. The series typically offers various frequencies and voltage options. The 'OE' suffix often denotes specific output enable capabilities or packaging variations within the manufacturer's lineup, distinguishing it from standard continuous-output variants.

Oscillators Replacement Considerations

Direct substitutes include other 18QHTF21-21.7725-OE units from Mercury Electronics. Cross-referencing with other manufacturers requires matching the 21.7725 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package dimensions. Verify electrical parameters such as phase noise and jitter specifications to ensure functional equivalence.