18QHTF21-81.80296-PD

Overview

The 18QHTF21-81.80296-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 81.80296 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and features a Standby (Power Down) control function. It is housed in a compact 4-SMD, No Lead package suitable for surface-mount applications.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby functionality for power management
• Designed for surface-mount assembly via 4-SMD no lead package

Applications

• General purpose clock signal generation
• Digital circuit timing reference
• Embedded system clock sources

Procurement Notes

Verify the exact part number suffix to ensure correct control functionality. The PD suffix indicates Standby mode, distinct from OE Enable/Disable variants. Confirm supply voltage requirements match the 1.8V specification before integration. Check package dimensions against PCB footprint constraints.

Selection Notes

Select this component when an 81.80296 MHz clock source with LVCMOS outputs is required. Ensure the design supports 1.8V operation. Consider the Standby feature if power reduction during idle periods is necessary. Compare physical size against available board space.

Part Context

This model belongs to the Mercury Electronics XO series. It shares the 18QHTF21 form factor with other frequencies. Variants exist with different voltages and control types. The manufacturer specializes in quartz frequency control products.

Replacement Considerations

Direct substitutes include models with identical frequency and package but different control suffixes like OE. Verify electrical parameters match exactly. Cross-reference pinouts for compatible replacements.