18QHTF21-100.005-PD

Overview

The 18QHTF21-100.005-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 100.005 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and features a standby or power-down function for energy management. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0x1.6 mm.

Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby and power-down functionality
• Utilizes LVCMOS output logic
• Compact surface-mount design

Applications

• Digital signal processing systems
• Communication equipment clocking
• Embedded system timing references
• Consumer electronics timing circuits

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply rail is stable and within the specified operating range to ensure reliable oscillator performance. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions precisely to avoid assembly issues.

Selection Notes

Select this component when a precise 100.005 MHz reference is required in space-constrained applications. The LVCMOS interface ensures compatibility with standard digital logic families. Consider the power-down feature if system-level power efficiency is a priority. Verify that the operating temperature range meets the environmental conditions of the final product deployment.

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 a power-down control pin, distinguishing it from standard continuous-operation variants within the same physical form factor.

Replacement Considerations

Direct substitutes include other 100.005 MHz LVCMOS oscillators in 4-SMD no-lead packages with 1.8V operation. Verify pinout compatibility and thermal characteristics when cross-referencing with alternative manufacturers. Ensure the replacement supports the same standby functionality if power management is critical.