18QHTF21-68.920-PD

Overview

The 18QHTF21-68.920-PD is a crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 68.92 MHz with an LVCMOS output logic level. The device requires a 1.8V supply voltage and features a Standby (Power Down) control function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.

Feature Summary

• Supports low-voltage operation at 1.8V for energy efficiency
• Includes standby functionality to reduce power consumption during idle periods
• Utilizes LVCMOS output interface for digital circuit compatibility

Applications

• Battery-powered portable electronic devices
• General-purpose digital clock signal generation
• Embedded systems requiring precise timing references

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your system design before ordering. Confirm that the 1.8V supply voltage aligns with your target platform's power rails. Ensure the 4-SMD no-lead package footprint matches your PCB layout constraints. Check for RoHS compliance status if required by your manufacturing standards.

Selection Notes

Select this component when a 68.92 MHz clock source is required within a 2.0x1.6mm form factor. Consider the 1.8V operating voltage as a primary constraint for compatible logic families. Evaluate the need for power-down capabilities to manage system-wide energy usage. Compare alternative frequencies from the same series if exact timing specifications differ slightly.

Part Context

This model belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series offers various standard frequencies optimized for consumer and industrial electronics. The PD suffix indicates the inclusion of a power-down pin or control feature. These components are designed for high-volume production environments requiring consistent timing performance.

Replacement Considerations

Direct substitutes include other 68.92 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation. Verify pinout compatibility and thermal characteristics when swapping manufacturers. Ensure equivalent frequency stability and phase noise specifications are maintained for critical applications.