18QHTF21-100.040-PD

Overview

The 18QHTF21-100.040-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 100.04 MHz with a stability of 50 ppm. The device utilizes a crystal base resonator and supports an LVCMOS output signal. It functions at a supply voltage of 1.8V, drawing a maximum current of 28 mA. The component features a standby mode for power management and is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm.

Feature Summary

• Generates precise timing signals using a crystal base resonator
• Supports low-voltage operation with standby power-down capability
• Provides LVCMOS output interface for digital circuit integration

Applications

• High-speed data communication interfaces requiring stable clock sources
• Embedded systems utilizing microcontrollers or processors
• Consumer electronics devices needing compact timing solutions

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply voltage aligns with your system's power rails. Confirm that the 4-SMD package footprint matches your PCB layout constraints. Check for any specific RoHS compliance documentation if required by your manufacturing standards.

Selection Notes

Select this component when a 100.04 MHz frequency is strictly required. Consider the 50 ppm stability limit for environmental variations. Evaluate the 28 mA current consumption against your power budget. The 1.8V operating voltage restricts compatibility with higher voltage logic families without level shifting.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, designed for space-constrained applications. The series offers various frequencies within a small 2.0x1.6 mm package. It targets markets demanding reliable quartz-based timing in portable and industrial electronics.

Replacement Considerations

Direct substitutes include other 100.04 MHz XO components in 4-SMD packages with compatible 1.8V operation. Verify pinout compatibility and electrical specifications before swapping.