18QHTF21-108.0791-PD

Overview

The 18QHTF21-108.0791-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 108.0791 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a standby (power down) function for energy management. Frequency stability is specified at ±50ppm. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm. It supports an operating temperature range from -40°C to 85°C, suitable for industrial applications.

Feature Summary

• Supports standby mode for power reduction
• Compact surface-mount package design
• LVCMOS output interface compatibility

Applications

• Industrial control systems
• Communication equipment
• Embedded computing modules

Procurement Notes

Verify the exact frequency tolerance and load capacitance requirements against your circuit design specifications before procurement. Ensure the 1.8V supply rail is stable and within the recommended operating range to maintain the specified ±50ppm stability. Confirm that the PCB footprint matches the 4-SMD, No Lead package dimensions to avoid assembly issues during manufacturing.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a specific high-frequency output near 108 MHz. Consider the ±50ppm stability limit for timing accuracy needs. The choice depends on the availability of the specific 108.0791 MHz frequency point and the necessity for a standby feature in power-sensitive designs.

Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series offers various frequencies with standardized LVCMOS outputs. The 'PD' suffix indicates the inclusion of a power-down capability. This model represents a specific frequency variant within the broader family of quartz-based timing solutions provided by the manufacturer.

Replacement Considerations

Direct substitutes must match the 108.0791 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Check datasheets for equivalent parts from other manufacturers offering similar stability and size constraints.