18QHTF21-68.085-PD

Overview

The 18QHTF21-68.085-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd, operating at a fixed frequency of 68.085 MHz. It utilizes LVCMOS output logic and functions with a supply voltage of 1.8V. The device features a power-down capability via a standby mode. 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 for energy efficiency
• Includes standby mode for power-down functionality
• Utilizes LVCMOS output logic for digital interface compatibility
• Designed in a small form factor surface-mount package

Applications

• Battery-powered portable devices
• General-purpose digital timing circuits
• Embedded systems requiring precise clock signals

Procurement Notes

Verify the specific ordering suffix to ensure the correct package variant and frequency tolerance match the design requirements. Confirm that the 1.8V supply voltage aligns with the target system's power rails. Check for RoHS compliance status if environmental regulations apply to the final assembly. Ensure the 4-SMD footprint matches the PCB layout constraints.

Selection Notes

Select this component when a low-profile, low-voltage oscillator is required for space-constrained designs. The 1.8V specification makes it suitable for modern digital logic families. Consider the 2.0x1.6 mm package size against available board real estate. Verify that the LVCMOS output swing is compatible with the receiving input thresholds of the connected integrated circuit.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which focuses on quartz-based timing solutions. The series includes various frequencies and voltage options. The 'PD' suffix typically indicates the inclusion of a power-down control feature, distinguishing it from continuously running variants within the same physical package family.

Replacement Considerations

Direct substitutes include other 1.8V LVCMOS oscillators in 2.0x1.6mm packages from Mercury Electronics, such as the 18QHTF21-68.080-PD or 18QHTF21-51.200-PD, provided the frequency difference is acceptable for the application.