18QHTF21-78.336-OE

Overview

The 18QHTF21-78.336-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a nominal frequency of 78.336 MHz with an LVCMOS output logic type. The device requires a 1.8V supply voltage and features enable/disable functionality. It is housed in a 4-SMD, No Lead package. The unit supports an operating temperature range typical for commercial applications and offers a frequency stability of ±50ppm.

Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated enable and disable control capability
• Compact surface-mount package design

Applications

• General clock signal generation in electronic circuits
• Digital system timing references
• Embedded device clock sources

Procurement Notes

Verify the specific suffix OE against official Mercury documentation to confirm exact electrical tolerances and pinout configuration. Ensure the 1.8V supply requirement aligns with target system power rails. Confirm package dimensions match PCB footprint specifications before integration.

Selection Notes

Select this component when a 78.336 MHz clock source with LVCMOS outputs is required. Consider the 1.8V operating voltage constraint during power budgeting. Evaluate the 4-SMD no-lead package for suitable reflow soldering processes and space constraints within the assembly layout.

Part Context

This part belongs to the Mercury 18QHTF21 series of standard crystal oscillators. The series provides various frequency options with consistent LVCMOS output characteristics. The manufacturer utilizes quartz technology for frequency stability. This specific model represents one frequency variant within the broader product line.

Replacement Considerations

Cross-reference with other 78.336 MHz XO models from Mercury or compatible vendors. Verify identical LVCMOS output levels and 1.8V supply requirements. Ensure mechanical footprint compatibility for direct replacement without PCB redesign.