18QHTF21-75.570-PD

Overview

The 18QHTF21-75.570-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a fixed frequency of 75.57 MHz and utilizes LVCMOS output logic levels. The device is designed for low-voltage applications, requiring a supply voltage of 1.8V. It features a standby mode capability for power down functionality to reduce energy consumption during idle periods. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly processes.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby function for power-down control
• Operates on a single 1.8V supply voltage

Applications

• Digital signal processing systems
• Communication equipment clocking
• Embedded system timing references

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply rail stability meets the oscillator's specifications. Ensure the PCB footprint matches the 4-SMD No Lead package dimensions provided in the official datasheet. Check for any RoHS compliance documentation if required by your manufacturing standards.

Selection Notes

Select this component when a precise 75.57 MHz reference is needed with low voltage operation. Consider the LVCMOS output swing limits for downstream logic compatibility. Evaluate the thermal environment as temperature stability affects frequency accuracy. Compare package size constraints against available board space for the 4-SMD form factor.

Part Context

This part belongs to the Mercury Electronic XO series, which provides standard frequency generation solutions. The manufacturer specializes in quartz crystals and oscillators, offering various packages and frequencies. This specific model represents a low-voltage option within their portfolio, targeting portable and power-sensitive electronic designs requiring reliable timing signals.

Replacement Considerations

Direct substitutes must match the 75.57 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD No Lead package. Verify pinout compatibility and electrical characteristics such as phase noise and jitter. Consult the manufacturer's cross-reference list for approved alternatives.