18QHTF21-59.8178-OE

Overview

The 18QHTF21-59.8178-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 59.8178 MHz and utilizes LVCMOS output logic. The device is designed for low-voltage applications with a supply voltage of 1.8V. It features an enable/disable control function to manage power consumption. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly on printed circuit boards.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes enable/disable functionality for power management
• Utilizes a leadless SMD package for space-constrained designs

Applications

• Digital signal processing systems
• Communication equipment requiring precise timing
• Embedded systems with low-voltage logic interfaces

Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against your system design before procurement. Ensure that the 1.8V supply voltage aligns with your target platform's power rails. Confirm that the enable/disable pin configuration matches your control logic. Check for any RoHS compliance documentation if required by your manufacturing standards. Validate the 4-SMD no-lead footprint dimensions with your PCB layout guidelines to ensure proper soldering and mechanical stability during assembly.

Selection Notes

Select this model when a stable 59.8178 MHz clock source is required for LVCMOS-compatible circuits. The 1.8V supply voltage makes it suitable for modern low-power portable devices or battery-operated systems. The enable/disable feature allows for dynamic power saving strategies. Consider the leadless package for high-density board layouts where component height and footprint are critical constraints. Ensure the application environment falls within the specified operating temperature limits for reliable performance.

Part Context

This part belongs to Mercury Electronics' series of surface-mount crystal oscillators. The '18' prefix typically indicates the 1.8V supply voltage variant within their product line. The 'QHTF21' designation refers to the specific package type and form factor. These oscillators are designed to provide accurate frequency references for timing-critical applications in consumer electronics and industrial equipment.

Replacement Considerations

Direct replacements must match the 59.8178 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify pinout compatibility for the enable/disable function. Cross-reference with other manufacturers offering similar low-profile XO components with identical electrical specifications.