18QHTF21-64.478-PD

Overview

The 18QHTF21-64.478-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 64.478 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm. This component is designed for precise timing applications requiring low power consumption and small form factor integration.

Feature Summary

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

Applications

• Portable electronic devices
• Communication equipment
• Consumer electronics

Procurement Notes

Verify the specific datasheet from Mercury Electronics Ind. Co. Ltd to confirm electrical characteristics and mechanical drawings. Ensure the 1.8V supply requirement aligns with your system design. Check for RoHS compliance status if required by your manufacturing standards. Confirm the 4-SMD package footprint matches your PCB layout constraints before finalizing procurement.

Selection Notes

Select this model when a 64.478 MHz clock signal is required with low voltage operation. The LVCMOS output ensures compatibility with standard digital logic families. Consider the 1.8V supply constraint and the availability of a standby feature for power-sensitive designs. The small 2.0x1.6 mm package is suitable for space-constrained applications.

Part Context

This part belongs to the 18QHTF21 series of SMD oscillators from Mercury Electronics. The series typically offers various frequencies with standardized packaging. The 'PD' suffix likely indicates the power-down capability. Mercury Electronics specializes in quartz-based timing components, providing reliable frequency control solutions for industrial and consumer markets.

Replacement Considerations

Consult official cross-reference lists from Mercury Electronics for direct substitutes. Verify that any replacement matches the 64.478 MHz frequency, 1.8V voltage, and LVCMOS output type. Ensure the physical footprint remains compatible with existing PCB layouts.