18QHTF21-67.250-PD

Overview

The 18QHTF21-67.250-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a fixed frequency of 67.25 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes a standby (power down) feature for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm.

Feature Summary

• Supports low-voltage operation at 1.8V
• Integrates standby mode capability
• Provides LVCMOS signal output

Applications

• General clock generation for digital circuits
• Embedded system timing references
• Communication interface synchronization

Procurement Notes

Verify the specific frequency suffix matches the required 67.25 MHz specification. Confirm that the 1.8V supply voltage aligns with the target circuit design. Ensure the 4-SMD no-lead package footprint corresponds to the PCB layout requirements. Check for any specific handling instructions regarding electrostatic discharge sensitivity during assembly.

Selection Notes

Select this component when a precise 67.25 MHz reference is needed within a low-power constraint. The small 2.0x1.6 mm form factor suits space-constrained designs. Consider the LVCMOS compatibility with downstream logic levels. Evaluate if the standby feature provides necessary power savings for the application profile.

Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series offers various frequencies while maintaining consistent electrical characteristics and physical dimensions. The PD suffix indicates the specific package type and pin configuration used for automated placement.

Replacement Considerations

Direct substitutes must match the 67.25 MHz frequency, 1.8V supply, and LVCMOS output. Verify pinout compatibility for the 4-SMD no-lead package. Cross-reference thermal and mechanical specifications to ensure fit within the existing enclosure.