18QHTF21-13.506-PD

Overview

The 18QHTF21-13.506-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 13.506 MHz with LVCMOS output logic and a supply voltage of 1.8V. The device features a standby (power down) function and is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm. Key electrical parameters include a maximum supply current of 24mA, frequency stability of ±50ppm, and an operating temperature range of -40°C to 85°C. This surface-mount component is designed for applications requiring precise timing signals in space-constrained environments.

Feature Summary

• Compact 4-SMD no-lead package design suitable for high-density PCB layouts
• Integrated power-down mode for enhanced energy efficiency during idle states
• LVCMOS output interface compatible with standard digital logic families
• Wide industrial temperature range ensuring reliable operation in harsh conditions

Applications

• Portable consumer electronics requiring low-power clock sources
• Industrial control systems needing stable timing references
• Communication equipment utilizing serial data transmission protocols
• Embedded computing modules with strict size constraints

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 no-lead footprint matches your PCB layout guidelines. Check for any specific reflow soldering profile recommendations provided by the manufacturer to ensure joint integrity. Validate that the operating temperature range meets your environmental specifications.

Selection Notes

Choose this component when a small form factor and low power consumption are critical. The 1.8V supply voltage makes it suitable for modern low-voltage digital circuits. Consider the ±50ppm stability if your application does not require ultra-high precision timing. The integrated power-down feature is advantageous for battery-operated devices. Ensure compatibility with LVCMOS logic levels in your downstream circuitry.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies and voltage options within a standardized 2.0x1.6 mm package. These oscillators are designed to replace larger through-hole components or older SMD packages in modern electronic designs. The 'PD' suffix indicates the inclusion of a power-down control pin for active management of power consumption.

Replacement Considerations

Direct replacements must match the 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify frequency accuracy and stability requirements against the original specification. Ensure the replacement part supports the same operating temperature range. Check pinout compatibility if the new component has different control pin configurations.