18QHTF21-17.500-PD

Oscillators Overview

The 18QHTF21-17.500-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a nominal frequency of 17.5 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 3.3V and includes a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. The component is designed for operation within an industrial temperature range of -40°C to +85°C.

Oscillators Feature Summary

• Supports low-voltage LVCMOS output logic for digital interface compatibility
• Includes standby mode functionality to reduce power consumption during idle periods
• Utilizes a surface-mount 4-pin no-lead package for automated assembly integration

Oscillators Applications

• General-purpose clock signal generation in embedded systems
• Timing reference sources for microcontrollers and processors
• Digital communication interfaces requiring stable frequency standards

Oscillators Procurement Notes

Verify the specific operating voltage and load capacitance requirements against the target circuit design before procurement. Confirm that the 4-SMD footprint matches the PCB layout constraints. Ensure the selected variant meets the required temperature range specifications for the intended application environment. Cross-reference the datasheet parameters with system timing budgets to guarantee signal integrity.

Oscillators Selection Notes

Select this component when a small form factor oscillator is required for 17.5 MHz applications. Consider the 3.3V supply requirement and LVCMOS output levels for compatibility with downstream logic. Evaluate the thermal performance within the -40°C to +85°C range against environmental conditions. Compare power consumption metrics if standby features are critical for battery-operated designs.

Oscillators Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies and voltage options within a standardized 2.0x1.6mm package. The 'PD' suffix typically indicates specific packaging or handling characteristics defined by the manufacturer. This series is positioned as a cost-effective solution for consumer and industrial electronics requiring precise timing.

Oscillators Replacement Considerations

Direct substitutes may include other 17.5 MHz LVCMOS oscillators in 4-SMD packages from manufacturers such as Epson, NDK, or SiTime. Verify pinout compatibility and electrical parameter equivalence before substitution.