18QHTF21-79.0505-PD

Overview

The 18QHTF21-79.0505-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a fixed frequency of 79.0505 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes a standby or power-down feature for energy management. It is housed in a compact 4-SMD, No Lead surface-mount package with dimensions of 2.00mm x 1.60mm.

Feature Summary

• Supports low-voltage operation at 1.8V
• Integrates standby mode for power reduction
• Provides LVCMOS signal output

Applications

• General clock generation in embedded systems
• Timing reference for digital circuits
• Signal synchronization in communication modules

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 footprint matches your PCB layout constraints to avoid assembly issues.

Selection Notes

Choose this component when a precise 79.0505 MHz timing source is required in space-constrained designs. The LVCMOS interface ensures compatibility with standard digital logic families. Consider the power-down capability if battery efficiency is a priority for the target application.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz-based frequency control products. The manufacturer has extensive experience in producing crystals and oscillators, positioning this model as a reliable solution for stable timing applications within their standard XO lineup.

Replacement Considerations

Direct substitutes must match the 79.0505 MHz frequency, 1.8V supply, and 4-SMD package. Verify pinout compatibility and electrical characteristics before swapping.