18QHTF21-85.600-PD

Overview

The 18QHTF21-85.600-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 85.6 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 function that allows for power-down capability to conserve energy when the oscillator is not in active use. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly processes. This specific model is part of the QHTF series, which is characterized by its small footprint and reliability for timing clock applications.

Feature Summary

• LVCMOS output interface for digital logic compatibility
• Integrated standby mode for power management
• Compact 4-SMD no-lead surface mount package

Applications

• Battery-powered portable electronic devices
• General-purpose digital timing circuits
• Communication equipment requiring stable clock signals

Procurement Notes

Verify the exact operating temperature range and load capacitance requirements against your specific circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the PCB footprint matches the 4-SMD, No Lead package dimensions provided in the official datasheet. Check RoHS compliance status if environmental regulations apply to your manufacturing process. Always refer to the manufacturer's latest documentation for any updates on pin configuration or electrical characteristics.

Selection Notes

Select this component when a precise 85.6 MHz clock signal is required in a space-constrained environment. The 1.8V operation makes it suitable for modern low-power digital systems. Consider the LVCMOS output compatibility with your downstream logic gates. The standby feature is advantageous for applications requiring periodic sleep modes. Evaluate the thermal performance and stability needs against the standard specifications provided in the datasheet.

Part Context

This oscillator belongs to the QHTF series from Mercury Electronics, a supplier specializing in quartz crystals and oscillators. The series is known for providing reliable timing solutions in small form factors. Mercury Electronics has a long history in the frequency control industry, offering various products including TCXOs and VCTCXOs. The 18QHTF21 series specifically targets applications needing low voltage and compact size.

Replacement Considerations

Direct substitutes include other models within the same QHTF series with different frequencies, such as 18QHTF21-51.200-PD or 18QHTF21-18.080-PD, provided the frequency difference is acceptable. Cross-referencing with other manufacturers' 4-SMD LVCMOS oscillators requires careful verification of voltage, current, and pinout compatibility.