18QHTF21-115.500-PD

Overview

The 18QHTF21-115.500-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 115.5 MHz and utilizes LVCMOS output logic levels. The device requires a supply voltage of 1.8V and features a standby mode for power down functionality. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly.

Feature Summary

• LVCMOS output interface
• Standby (Power Down) capability
• Compact 4-SMD, No Lead package

Applications

• General timing applications requiring precise frequency control
• Embedded systems utilizing LVCMOS compatible interfaces
• Portable electronics due to low voltage operation

Procurement Notes

Verify the specific ordering suffix 'PD' against the manufacturer's current documentation to ensure it corresponds to the intended tape and reel packaging or specific variant requirements. Confirm that the 1.8V supply voltage aligns with your system design before procurement.

Selection Notes

Select this component when an LVCMOS output is required alongside a 1.8V operating voltage. Ensure the 115.5 MHz frequency matches the target clock signal needs. Verify that the 4-SMD, No Lead footprint fits the PCB layout constraints.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which includes various frequencies such as 51.2 MHz and 121.5 MHz. All variants share similar package dimensions and electrical characteristics, differing primarily in their specified output frequency and potentially specific ordering suffixes.

Replacement Considerations

Direct substitutes within the same series include 18QHTF21-51.200-PD and 18QHTF21-121.500-PD, provided the frequency difference is acceptable. Other Mercury oscillators with LVCMOS outputs and 1.8V supplies may serve as alternatives if pin compatibility is verified.