18QHTF21-8.182-PD

Overview

The 18QHTF21-8.182-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 8.182 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and features a standby or power-down mode for energy efficiency. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• Supports low-voltage operation with 1.8V supply
• Includes standby and power-down functionality
• Utilizes LVCMOS output logic for digital compatibility
• Designed in a small form factor SMD package

Applications

• General-purpose digital timing circuits
• Embedded systems requiring stable clock sources
• Portable electronics with power management needs
• Communication modules utilizing standard frequencies

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 package footprint matches your PCB layout constraints. Check for any specific operating temperature range limitations if used in extreme environments.

Selection Notes

Select this component when a standard 8.182 MHz clock signal is required with low power consumption capabilities. The LVCMOS interface ensures compatibility with standard digital logic families. Consider the standby feature if power conservation during idle periods is critical. The compact SMD package aids in space-constrained designs.

Part Context

This part belongs to the Mercury Electronics XO series, which provides standard frequency oscillators. The '18' prefix likely indicates the 1.8V supply voltage capability, while 'QHTF21' denotes the specific package and performance grade. The '-PD' suffix confirms the inclusion of power-down functionality, distinguishing it from continuous-operation variants.

Replacement Considerations

Direct substitutes must match the 8.182 MHz frequency, LVCMOS output, and 1.8V supply voltage. Verify package dimensions for the 4-SMD No Lead type. Other Mercury models like 18QHTF21-8.000-PD offer different frequencies but share similar electrical characteristics. Cross-reference pinouts and thermal requirements carefully.