18QHTF21-40.730-PD

Oscillators Overview

The 18QHTF21-40.730-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co. Ltd. It operates at a fixed frequency of 40.73 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a power-down function via a standby control input. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. The component is RoHS compliant and suitable for applications requiring precise timing signals in low-voltage digital systems.

Oscillators Feature Summary

• Supports LVCMOS output logic for direct interface with digital circuits
• Includes standby control pin for power-down functionality to reduce consumption
• RoHS compliant construction for environmental safety standards

Oscillators Applications

• Digital signal processing systems requiring stable clock sources
• Communication modules utilizing LVCMOS interfaces
• Portable electronic devices constrained by size and power budgets

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the system design specifications before procurement. Confirm that the 1.8V supply voltage aligns with the target circuit's power rails. Ensure the 4-SMD no-lead package footprint matches the PCB layout guidelines provided in the official datasheet to prevent soldering defects during assembly.

Oscillators Selection Notes

Select this component when a low-profile, surface-mount oscillator is required for 1.8V logic families. The choice depends on the necessity for a power-down feature to manage energy efficiency in battery-operated or idle states. Consider the 2.0x1.6mm form factor if space constraints are critical within the enclosure design.

Oscillators Part Context

This part belongs to the QHTF series of surface-mount crystal oscillators from Mercury Electronics. The series is characterized by small footprints and low power consumption. The suffix PD indicates the inclusion of a power-down control capability, distinguishing it from continuous-operation variants within the same family.

Oscillators Replacement Considerations

Substitute only with other 40.73 MHz XO components offering LVCMOS outputs and 1.8V operation. Verify that any replacement maintains the 2.0x1.6mm package dimensions and supports standby control functionality to ensure mechanical and electrical compatibility.