18QHTF21-8.045715-PD

Overview

The 18QHTF21-8.045715-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 8.045715 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and features a standby function for power down capabilities. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby mode to enable power down functionality
• Designed for low voltage operation at 1.8V

Applications

• Battery-powered portable devices
• General purpose clock generation
• Digital signal processing circuits

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply rail is stable within the operational limits specified in the datasheet. Ensure the PCB footprint matches the 4-SMD no lead package dimensions to prevent assembly issues during manufacturing.

Selection Notes

Select this component when a precise 8.045715 MHz clock source is required for low-power applications. The small form factor suits space-constrained designs. Consider the LVCMOS output swing and drive capability to ensure compatibility with downstream logic inputs without additional buffering.

Part Context

This part belongs to the 18QHTF21 series of surface mount oscillators from Mercury Electronics. The series offers various frequencies with consistent 2.0x1.6 mm packaging. The -PD suffix indicates the inclusion of power down control functionality, distinguishing it from continuous operation variants.

Replacement Considerations

Direct replacements must match the 8.045715 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no lead package. Verify pinout compatibility and thermal characteristics. Cross-reference with other manufacturers offering similar low-profile oscillators if availability is an issue.