18QHTF21-84.672-PD

Overview

The 18QHTF21-84.672-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 84.672 MHz with an LVCMOS output logic level. The device requires a 1.8V supply voltage and features a Standby (Power Down) control function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm. This component is designed for applications requiring precise timing signals within low-power electronic systems.

Feature Summary

• Supports Standby (Power Down) mode for reduced power consumption
• Utilizes LVCMOS output logic for digital interface compatibility
• Compact 4-SMD No Lead surface-mount package design

Applications

• Portable consumer electronics requiring low power operation
• Communication modules needing stable clock signals
• Embedded systems with limited supply voltage constraints

Procurement Notes

Verify the specific frequency tolerance and stability specifications against the official datasheet prior to procurement, as these parameters are critical for system timing accuracy. Ensure that the 1.8V supply voltage requirements align with the target circuit design. Confirm the package footprint matches the PCB layout to avoid assembly issues. Check for any RoHS compliance certifications if required by regional regulations.

Selection Notes

Select this component when a low-profile, low-voltage oscillator is required for space-constrained designs. The LVCMOS output ensures compatibility with standard digital logic families. Consider the standby feature if power management is a priority. Verify that the operating temperature range meets the environmental conditions of the intended application. Compare performance metrics against alternative oscillators from other manufacturers if specific jitter or phase noise requirements exceed standard specifications.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies and supply voltages, catering to diverse timing needs in modern electronics. The 'PD' suffix indicates the inclusion of a power-down capability, distinguishing it from standard continuous-operation variants within the same package family.

Replacement Considerations

Direct substitutes may include other 18QHTF21 series parts with different frequencies but identical electrical characteristics and pinouts. Cross-reference with similar 2.0x1.6mm LVCMOS oscillators from other manufacturers, ensuring voltage and logic compatibility. Verify that any replacement maintains the same standby functionality and package dimensions.