18QHTF21-74.530-PD

Overview

The 18QHTF21-74.530-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 74.53 MHz and utilizes LVCMOS output logic. The device is designed for low-power applications, featuring a supply voltage of 1.8V and a standby power-down mode. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0mm x 1.6mm.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby power-down functionality to reduce energy consumption
• Utilizes a small form-factor 4-SMD no-lead package

Applications

• General-purpose clock signal generation
• Digital circuit timing references
• Embedded system clock sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your design specifications 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 RoHS compliance status if required by your manufacturing standards.

Selection Notes

Select this component when a precise 74.53 MHz clock source is required for LVCMOS-compatible circuits. Consider the 1.8V operating voltage and standby feature for power-sensitive designs. The compact 2.0x1.6mm package is suitable for space-constrained applications. Evaluate thermal performance and stability needs relative to the standard XO classification.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies within a standardized 1.8V LVCMOS format. The series provides consistent packaging and electrical characteristics across different frequency options, allowing for design flexibility while maintaining supply chain uniformity for similar clocking requirements.

Replacement Considerations

Direct substitutes include other 18QHTF21 series variants with identical pinouts and voltages but different frequencies, such as 18QHTF21-74.074-PD or 18QHTF21-68.665-PD, provided the frequency difference is acceptable for the application.