18QHTF21-42.949672-PD

Oscillators Overview

The 18QHTF21-42.949672-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 42.949672 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, suitable for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated standby mode for power management
• Compact 4-SMD no-lead surface mount package

Oscillators Applications

• General purpose clock generation in embedded systems
• Timing reference for microprocessors and FPGAs
• Data communication interfaces requiring stable clock sources

Oscillators Procurement Notes

Verify the specific ordering suffix PD against the manufacturer's current datasheet to ensure correct pinout and electrical specifications. Confirm that the 1.8V supply requirement aligns with the target system design. Check for any recent revisions to the 18QHTF21 series that may affect mechanical dimensions or performance parameters before finalizing procurement.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside LVCMOS outputs. The 4-SMD no-lead package offers space-saving benefits for dense PCB layouts. Ensure the application does not require spread spectrum functionality, as this model is specified as a standard oscillator without frequency modulation capabilities.

Oscillators Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series typically includes various frequency options and voltage levels. The 'PD' suffix generally indicates specific packaging or tape-and-reel configuration details defined by the manufacturer for automated assembly processes.

Oscillators Replacement Considerations

Direct substitutes must match the 42.949672 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify pin compatibility and thermal characteristics. Consult official cross-reference lists from Mercury Electronics for validated replacements.