18QHTF21-39.936-PD

Oscillators Overview

The 18QHTF21-39.936-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 39.936 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. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.

Oscillators Feature Summary

• Supports Standby (Power Down) mode for power management
• Utilizes LVCMOS output logic interface
• Compact 4-SMD No Lead surface mount package

Oscillators Applications

• General purpose timing clock generation
• Embedded systems requiring low voltage operation
• Portable electronic devices

Oscillators Procurement Notes

Verify the specific ordering suffix to ensure the correct package type and electrical characteristics match the design requirements. Confirm that the 1.8V supply voltage and LVCMOS output levels are compatible with the target system's I/O standards before finalizing procurement decisions.

Oscillators Selection Notes

Select this component when a precise 39.936 MHz clock signal is required with low power consumption capabilities. The choice depends on the need for a standby feature and compatibility with 1.8V logic families. Ensure the small form factor fits within the available PCB space constraints.

Oscillators Part Context

This part belongs to the QHTF series of crystal oscillators from Mercury Electronics. The series offers various frequencies and voltage options. The 'PD' suffix typically indicates the inclusion of a power-down or standby control pin, distinguishing it from continuously running variants.

Oscillators Replacement Considerations

Check for direct substitutes such as the 18QHTF21-39.936-OE if the OE pin functionality is preferred over PD, ensuring voltage and package compatibility.