18QHTF21-68.080-PD

Overview

The 18QHTF21-68.080-PD is a 68.08 MHz crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It utilizes LVCMOS output logic and operates on a 1.8V supply voltage. The device features a Standby (Power Down) control function for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm. This component is designed for applications requiring precise timing signals within low-voltage digital systems.

Feature Summary

• Integrates LVCMOS output logic for standard digital interface compatibility
• Includes Standby (Power Down) functionality to reduce power consumption
• Operates at a nominal 1.8V supply voltage for low-power efficiency

Applications

• Battery-powered portable electronic devices
• Low-voltage digital signal processing circuits
• Communication equipment requiring precise clock synchronization

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure that the 1.8V supply rail is stable and within the operational limits defined in the official datasheet. Confirm that the PCB footprint matches the 2.0x1.6 mm SMD package specifications to avoid assembly issues. Cross-reference the part number suffix 'PD' to ensure the correct standby feature is included as required by your system architecture.

Selection Notes

Select this component when a 68.08 MHz clock source is required with LVCMOS outputs. Consider the 1.8V operating voltage and 4-SMD package size for space-constrained designs. Evaluate the need for the Standby (Power Down) feature if power management is critical. Compare against other frequencies in the 18QHTF21 series if different timing speeds are needed while maintaining the same form factor and electrical characteristics.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics Ind. Co. Ltd, which offers various frequencies in a 2.0x1.6 mm surface-mount package. The series supports LVCMOS outputs and 1.8V operation. Similar models include variants like 18QHTF21-96.768-PD and 18QHTF21-15.700-PD, differing primarily in their nominal output frequencies while sharing the same physical dimensions and electrical interface standards.

Replacement Considerations

Direct substitutes must match the 68.08 MHz frequency, LVCMOS output, 1.8V supply, and 4-SMD 2.0x1.6mm package. Verify equivalent performance metrics such as phase noise and stability from alternative manufacturers if cross-referencing.