18QHTF21-108.000-PD

Overview

The 18QHTF21-108.000-PD is a 108 MHz crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a supply voltage of 1.8V and utilizes LVCMOS output logic. The component features a power-down function for standby mode control. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm.

Feature Summary

• Supports low-voltage operation at 1.8V
• Integrates a power-down pin for standby functionality
• Provides standard LVCMOS output signals

Applications

• Digital signal processing systems requiring precise clocking
• Communication equipment utilizing LVCMOS interfaces
• Portable electronic devices constrained by size and power

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the official datasheet before procurement. Confirm that the 1.8V supply rail matches the system design specifications. Ensure the PCB footprint accommodates the 2.0x1.6 mm SMD package dimensions to prevent assembly errors.

Selection Notes

Select this component when a 108 MHz frequency is strictly required alongside low-power consumption constraints. The integrated power-down feature makes it suitable for battery-operated applications. Verify compatibility with LVCMOS input thresholds of the receiving circuitry to ensure signal integrity.

Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series offers various frequencies within a small form factor. The 'PD' suffix indicates the inclusion of a power-down control pin, distinguishing it from continuous-operation variants.

Replacement Considerations

Direct substitutes must match the 108 MHz frequency, 1.8V supply, and 2.0x1.6 mm package. Check for equivalent LVCMOS outputs and power-down functionality. Cross-reference with other Mercury Electronics models or industry-standard equivalents ensuring identical electrical parameters.