18QHTF21-84.70625-PD

Overview

The 18QHTF21-84.70625-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 84.70625 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. It supports standby or power-down functionality for energy management.

Feature Summary

• Supports standby mode for power reduction
• Compact surface-mount package design
• LVCMOS output interface compatibility

Applications

• General purpose timing circuits
• Digital signal processing systems
• Communication equipment clock sources

Procurement Notes

Verify the specific operating temperature range and frequency stability parameters against the official datasheet before integration. Confirm that the 1.8V supply requirement aligns with the target system's power rails. Ensure the 4-SMD no-lead package footprint matches the PCB layout constraints to avoid assembly issues during manufacturing.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a small form factor. The LVCMOS output ensures compatibility with standard digital logic families. Consider the standby feature if power efficiency is critical. Verify that the 84.70625 MHz frequency meets the specific system timing requirements without additional dividers.

Part Context

This part belongs to the QHTF series of quartz oscillators from Mercury Electronics. The series offers various frequencies and voltage options within a standardized small outline package. The 'PD' suffix typically indicates the presence of a power-down control pin, allowing for active standby states to reduce current consumption during idle periods.

Replacement Considerations

Direct substitutes include other 18QHTF21 series variants with identical pinouts and electrical characteristics but different frequencies. Cross-reference with similar 2.0x1.6mm LVCMOS oscillators from other manufacturers only if pin compatibility and voltage levels are strictly matched.