18QHTF21-12.4416-PD

Overview

The 18QHTF21-12.4416-PD is a 12.4416 MHz crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It utilizes LVCMOS output logic and operates at a supply voltage of 1.8V. The device features a Standby (Power Down) function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm. This component is designed for standard timing applications requiring precise frequency generation.

Feature Summary

• LVCMOS output logic interface
• Integrated standby power down capability
• Compact 4-SMD no lead surface mount package

Applications

• Battery-powered portable devices
• Standard digital timing circuits
• Low voltage embedded systems

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 2.0x1.6 mm 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 low-voltage 1.8V operation is mandatory for the target application. The choice is driven by the need for a small form factor suitable for dense PCB layouts. Consider the LVCMOS output compatibility with downstream logic levels. The standby feature makes it suitable for applications requiring power efficiency during idle periods.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which focuses on low-power crystal oscillators. The series typically offers various frequencies within a standardized 2.0x1.6 mm package. Mercury Electronics is a established supplier of frequency control products, providing quartz crystals and oscillators for global markets since 1973.

Replacement Considerations

Direct substitutes include other 12.4416 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation. Verify pinout compatibility and electrical specifications such as current consumption and duty cycle. Cross-reference with similar models from Mercury or other manufacturers offering identical package dimensions and logic families.