18QHTF21-116.444-PD

Overview

The 18QHTF21-116.444-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 116.444 MHz with an LVCMOS output logic level. The device requires a 1.8V supply voltage and features a power-down (standby) function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm.

Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby mode via power-down control
• Provides LVCMOS output signal compatibility

Applications

• Digital signal processing systems requiring precise clock timing
• Communication equipment utilizing standard frequency references
• Embedded systems needing compact oscillator solutions

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no-lead package footprint matches your PCB layout constraints. Check for any specific manufacturing date codes or lot traceability needs required by your quality standards.

Selection Notes

Select this component when a small form factor is critical for space-constrained designs. Choose the 1.8V variant if your system operates on lower voltage rails compared to standard 3.3V devices. Consider the power-down feature if energy efficiency during idle states is a priority. Verify that LVCMOS output levels are compatible with your receiving logic inputs.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which focuses on miniature surface-mount oscillators. The series typically offers various frequencies and voltage options within a consistent 2.0x1.6 mm footprint. This specific model provides a high-frequency option suitable for modern digital interfaces.

Replacement Considerations

Direct substitutes may include other 116.444 MHz LVCMOS oscillators in a 2.0x1.6 mm package from different manufacturers. Ensure voltage compatibility and pinout alignment when considering alternatives. Verify that the replacement meets the same electrical specifications and mechanical dimensions.