18QHTF21-11.945-OE

Overview

The 18QHTF21-11.945-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 11.945 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features an enable/disable control function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes enable/disable functionality for power management
• Utilizes a low-profile surface-mount package design

Applications

• General clock signal generation in electronic circuits
• Timing reference for embedded systems
• Digital communication interfaces requiring precise frequency standards

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 4-SMD, No Lead package dimensions provided in the official datasheet to guarantee proper soldering and mechanical stability.

Selection Notes

Select this component when a stable 11.945 MHz clock source is required within a low-voltage 1.8V environment. The LVCMOS output is suitable for direct interfacing with standard digital logic families. Consider the small form factor if space constraints are critical, and verify that the enable pin can be utilized to manage power consumption during idle periods.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which focuses on miniature crystal oscillators. The series typically offers various frequencies within a standardized 2.0x1.6mm package. These components are engineered for applications demanding reliable timing signals in consumer electronics and portable devices where size and power efficiency are prioritized.

Replacement Considerations

Direct substitutes must match the 11.945 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify equivalent parts from other manufacturers ensure identical pinout and electrical characteristics to maintain circuit compatibility without redesign.