18QHTF21-58.6317-PD

Overview

The 18QHTF21-58.6317-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 58.6317 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a power-down standby mode to reduce consumption during inactive periods. It is housed in a compact 4-SMD, no lead package with dimensions of 2.0 x 1.6 mm.

Feature Summary

• Supports low-voltage operation at 1.8V
• Includes power-down standby functionality
• Provides LVCMOS output signal compatibility

Applications

• General clock generation for digital circuits
• Embedded systems requiring precise timing references
• Portable electronic devices utilizing low-power oscillators

Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against your system design before procurement. Confirm that the 1.8V supply voltage aligns with your target platform's power rails. Ensure the 4-SMD no-lead package footprint matches your PCB layout constraints. Cross-reference the manufacturer datasheet for detailed electrical characteristics and reliability standards.

Selection Notes

Select this component when a stable 58.6317 MHz reference is required for LVCMOS-compatible interfaces. Consider the 1.8V supply constraint and the necessity for a power-down feature for energy management. Evaluate the 2.0x1.6 mm package size against available board space. Compare performance metrics such as phase noise and stability if higher precision is needed for the application.

Part Context

This part belongs to the QHTF series of surface-mount crystal oscillators from Mercury Electronics. The series typically offers various frequencies and voltage options within similar small form factors. The '18' prefix indicates the 1.8V supply variant, while 'PD' denotes the power-down capability. This family targets applications demanding reliable timing in space-constrained designs.

Replacement Considerations

Direct substitutes must match the 58.6317 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify pinout compatibility and thermal characteristics. Alternative parts from other manufacturers may require schematic adjustments due to differing drive levels or loading requirements.