18QHTF21-40.960-PD

Oscillators Overview

The 18QHTF21-40.960-PD is a quartz crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 40.96 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a Standby (Power Down) function to reduce power consumption when not in use. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm. This surface-mount component is engineered for high reliability and stability in electronic circuits requiring precise timing signals.

Oscillators Feature Summary

• Supports Low Voltage CMOS (LVCMOS) output logic for digital interface compatibility
• Includes a Standby or Power Down mode to minimize energy usage during idle periods
• Utilizes a lead-free surface mount package for automated assembly integration

Oscillators Applications

• General purpose clock generation in consumer electronics
• Timing reference sources for embedded systems
• Data communication interfaces requiring stable frequency standards

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system's power rails. Ensure the PCB footprint matches the 2.0x1.6mm 4-SMD no-lead package specifications to guarantee proper soldering and mechanical stability during operation.

Oscillators Selection Notes

Select this component when a low-profile, surface-mount oscillator is required for space-constrained designs. The 1.8V operating voltage makes it suitable for modern low-power portable devices. Consider the LVCMOS output type if direct interfacing with digital logic gates is needed without additional buffering. The standby feature adds value for battery-operated applications requiring extended operational life.

Oscillators Part Context

This part belongs to the 18QHTF21 series of standard XO oscillators from Mercury Electronics. The series offers various frequencies and voltages, all sharing the same compact 2.0x1.6mm form factor. The 'PD' suffix indicates the inclusion of a power-down capability, distinguishing it from standard continuous-operation variants within the same physical package family.

Oscillators Replacement Considerations

Direct substitutes must match the 40.96 MHz frequency, 1.8V supply, LVCMOS output, and 2.0x1.6mm package. Verify pinout compatibility and thermal characteristics. Cross-reference with other manufacturers offering similar SMD oscillators, ensuring identical electrical parameters and mounting constraints are met.