18QHTF21-1.380-PD

Overview

The 18QHTF21-1.380-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd, designed for precise timing applications in electronic circuits. It operates at a fundamental frequency of 1.38 MHz and utilizes LVCMOS output logic to ensure compatibility with various digital systems. The device supports a supply voltage of 1.8V and includes a standby mode for power-down functionality, enhancing energy efficiency during idle periods. Encased in a compact 4-SMD, No Lead package, this component offers reliable performance within specified operating temperature ranges, making it suitable for space-constrained designs requiring stable clock signals.

Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated standby mode for power management
• Compact surface-mount packaging for board integration

Applications

• General-purpose timing reference in embedded systems
• Clock source for low-frequency digital logic circuits
• Power-efficient timing modules in portable devices

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply voltage aligns with your system's power rails. Confirm that the 4-SMD package dimensions fit your PCB footprint constraints. Check for any specific handling instructions regarding electrostatic discharge protection during installation.

Selection Notes

Select this model when a stable 1.38 MHz clock signal is required with low power consumption capabilities. Consider the LVCMOS output level if interfacing directly with standard CMOS logic families. Evaluate the need for standby functionality to manage power states effectively. Compare package size against available board real estate to ensure mechanical fit.

Part Context

This component belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronics. The series typically offers various frequency options within a consistent form factor. These oscillators are engineered for general timing applications where reliability and compactness are prioritized over high-frequency performance or extreme environmental ruggedness.

Replacement Considerations

Direct substitutes must match the 1.38 MHz frequency, LVCMOS output, and 4-SMD package. Verify pinout compatibility and electrical characteristics such as supply voltage and current consumption. Cross-reference with other manufacturers offering similar standard XO specifications.