18QHTF21-40.885-PD

Oscillators Overview

The 18QHTF21-40.885-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 40.885 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a standby power-down mode to reduce energy consumption during idle periods. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm. This component is 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 power-down functionality to minimize power usage
• Utilizes a leadless surface-mount package for space-constrained designs

Oscillators Applications

• Digital signal processing systems
• Communication equipment timing references
• Embedded control units requiring low-voltage operation

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your system design before procurement. Ensure that the 1.8V supply rail is stable and within the specified operating range to maintain oscillator performance. Confirm that the PCB footprint matches the 4-SMD no-lead package dimensions to avoid assembly issues. Check for any RoHS compliance documentation if required by your manufacturing standards.

Oscillators Selection Notes

Select this component when a 40.885 MHz clock source is required with LVCMOS compatibility. Consider the 1.8V operating voltage constraint and ensure the power budget allows for active and standby modes. The small 2.0x1.6 mm package makes it ideal for high-density boards. Evaluate thermal management needs as the device generates heat during operation, though the standby mode mitigates this.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies in a standardized 4-SMD no-lead form factor. The series is characterized by low voltage operation and power-down capabilities. Mercury Electronics has a long history in quartz crystal manufacturing, providing reliable frequency control solutions for global markets.

Oscillators Replacement Considerations

Direct substitutes include other 18QHTF21 variants with different frequencies, such as 18QHTF21-68.085-PD or 18QHTF21-51.200-PD, provided the frequency difference is acceptable. Cross-brand replacements must match the 40.885 MHz frequency, LVCMOS output, 1.8V supply, and 2.0x1.6 mm package size exactly.