18QHTF21-85.909089-PD

Overview

The 18QHTF21-85.909089-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 85.909089 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a power-down (standby) function to reduce consumption. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0mm by 1.6mm.

Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby mode for power management
• Provides LVCMOS signal output

Applications

• General clock generation in electronic circuits
• Data communication interfaces requiring precise timing
• Embedded systems utilizing low-power components

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply rail is stable and within the operational limits specified in the official datasheet. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions to guarantee proper assembly and electrical connection.

Selection Notes

Select this component when a precise 85.909089 MHz clock source is required in space-constrained designs. The choice is driven by the need for low voltage compatibility and integrated power-down capabilities. Consider the operating temperature range and stability requirements to ensure reliable performance in the intended application environment.

Part Context

This model belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series is characterized by small form factors and low power consumption. These devices are part of the manufacturer's broader portfolio of quartz-based frequency control products, which includes crystals and other oscillator types.

Replacement Considerations

Direct substitutes include other 18QHTF21 series variants with identical pinouts and specifications, such as the 18QHTF21-85.909089 without the PD suffix if power-down functionality is not critical. Cross-reference with equivalent LVCMOS oscillators from other manufacturers ensuring matching frequency, voltage, and package size.