18QHTF21-75.463-PD

Overview

The 18QHTF21-75.463-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 75.463 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a power-down function for standby mode control. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0 x 1.6 mm.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes power-down functionality to reduce consumption during standby

Applications

• General clock signal generation in electronic circuits
• Timing reference for digital systems requiring 75.463 MHz
• Embedded devices utilizing low-voltage 1.8V power domains

Procurement Notes

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

Selection Notes

Select this component when a precise 75.463 MHz clock source is needed within a 1.8V logic environment. The choice is driven by the requirement for a small 2.0x1.6mm form factor and the necessity for power management via the standby pin. Consider thermal operating range specifications if the application involves extreme environmental conditions.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series typically offers various frequencies and voltage options within similar physical footprints. The 'PD' suffix indicates the inclusion of a power-down control feature, distinguishing it from continuous-operation variants in the same family.

Replacement Considerations

Direct substitutes must match the 75.463 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical characteristics such as phase noise and jitter before swapping manufacturers.