18QHTF21-73.750-PD

Overview

The 18QHTF21-73.750-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 73.75 MHz and utilizes LVCMOS output logic levels. The device is designed for a supply voltage of 1.8V and includes a standby or power-down function to manage power consumption during idle periods. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. This component serves as a precise clock source for digital circuits requiring stable timing signals.

Feature Summary

• Supports LVCMOS output logic for direct interface with digital systems
• Includes standby mode capability for power management
• Utilizes a small form factor surface-mount package

Applications

• Digital system clock generation
• Timing reference for microprocessors
• Communication interface synchronization

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the PCB footprint matches the 4-SMD No Lead package dimensions. Check availability status as distribution channels may vary. Review the official datasheet for thermal and electrical specifications relevant to the application environment.

Selection Notes

Select this component when a 73.75 MHz clock signal is required with LVCMOS compatibility. Consider the 1.8V operating voltage constraint for power budgeting. Evaluate the need for standby functionality if power efficiency is critical. Compare package size constraints against available board space. Ensure the operating temperature range meets the environmental conditions of the end product.

Part Context

This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronics. The series offers various frequencies within a standardized 2.0x1.6mm SMD package. These oscillators are designed for applications requiring low power consumption and small footprint. The manufacturer provides multiple variants with different frequencies and output types within this family.

Replacement Considerations

Direct substitutes include other 18QHTF21 series parts with identical pinout and package but different frequencies, such as 18QHTF21-74.250-PD, provided the frequency difference is acceptable. Cross-brand replacements must match the 4-SMD No Lead package, 1.8V supply, LVCMOS output, and 73.75 MHz frequency. Verify electrical parameters and mechanical dimensions before substitution.