18QHTF21-31.875-PD

Oscillators Overview

The 18QHTF21-31.875-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a fixed frequency of 31.875 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a Standby (Power Down) control function to manage power consumption. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.

Oscillators Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes Standby (Power Down) functionality for power management
• Utilizes a small form factor 4-SMD No Lead package

Oscillators Applications

• General purpose clock signal generation
• Embedded systems requiring low-voltage timing sources
• Portable electronic devices due to compact size

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your system design before procurement. Confirm that the 1.8V supply voltage aligns with your target circuit's power rails. Ensure the LVCMOS output swing is compatible with the receiving logic inputs. Check the datasheet for any specific reflow soldering profile recommendations for the 4-SMD No Lead package to ensure assembly reliability.

Oscillators Selection Notes

Select this component when a precise 31.875 MHz clock source is required with low power consumption capabilities. The 1.8V operating voltage makes it suitable for modern low-power digital circuits. The Standby feature allows for dynamic power saving in battery-operated applications. Consider the 2.0x1.6mm footprint constraints during PCB layout planning to ensure adequate spacing and thermal relief.

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. The 'PD' suffix indicates the inclusion of a Power Down pin or function. These oscillators are designed for applications requiring stable timing in space-constrained environments.

Oscillators Replacement Considerations

Direct replacements must match the 31.875 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD No Lead package dimensions. Verify that substitute parts support the same Standby (Power Down) control mechanism. Ensure electrical characteristics such as phase noise and jitter meet or exceed the original specifications for the specific application.