18QHTF21-105.100-PD

Overview

The 18QHTF21-105.100-PD is a 105.1 MHz crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It utilizes LVCMOS output logic and operates at a supply voltage of 1.8V. The device features a standby or power-down function for energy management. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0mm x 1.6mm. This standard frequency oscillator is designed for applications requiring precise timing signals within low-voltage digital systems.

Feature Summary

• LVCMOS output logic for standard digital interface compatibility
• Integrated standby mode to reduce power consumption during idle periods
• Compact 4-SMD no-lead surface mount package design

Applications

• General purpose clock signal generation in digital circuits
• Timing reference for microprocessors and FPGAs
• Communication equipment requiring stable frequency sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the PCB footprint matches the 2.0x1.6mm SMD package dimensions. Check for any specific reflow soldering profile recommendations provided in the manufacturer datasheet to ensure reliable assembly.

Selection Notes

Select this component when a 105.1 MHz clock source is required with LVCMOS outputs. Consider the 1.8V operating voltage constraint for compatibility with modern low-power logic families. Evaluate the need for a standby feature if power efficiency is critical. Compare package size constraints against available board space. Verify temperature range specifications if operating in extreme environments.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronic Ind. Co., Ltd, which offers various frequencies in a small form factor. The series typically includes models like 18QHTF21-8.000-PD and 18QHTF21-51.200-PD. These oscillators are designed for high-volume consumer and industrial electronics where space saving and low power are priorities.

Replacement Considerations

Direct substitutes may include other 105.1 MHz LVCMOS oscillators in 2.0x1.6mm packages from manufacturers such as Epson, NDK, or SiTime. Ensure pinout compatibility and electrical specifications match exactly. Cross-reference with similar Mercury parts like 18QHTF21-105.000-PD if slight frequency deviation is acceptable.