18QHTF21-13.5605-OE

Overview

The 18QHTF21-13.5605-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 13.5605 MHz and utilizes LVCMOS output logic. The device is designed for operation with a 3.3V supply voltage and features an enable/disable control function. It is housed in a compact 4-SMD, no lead package with dimensions of 3.2mm x 2.0mm. This component provides precise timing signals suitable for various electronic applications requiring stable clock generation.

Feature Summary

• Provides precise timing at 13.5605 MHz using standard XO technology
• Features LVCMOS output logic for digital interface compatibility
• Includes enable/disable functionality for power management
• Utilizes a compact 4-SMD no-lead surface mount package

Applications

• Communications equipment clock signal generation
• Timing circuits in electronic devices
• RFID reader systems operating at 13.56 MHz

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 3.3V supply voltage aligns with your system's power rails. Ensure the 4-SMD package footprint matches your PCB layout constraints. Check for any specific environmental ratings if the application involves extreme temperatures. Always refer to the official datasheet for final electrical specifications.

Selection Notes

Select this component when a stable 13.5605 MHz clock source is required for RFID or communication interfaces. Consider the LVCMOS output level compatibility with your microcontroller or FPGA inputs. Evaluate the size constraints of the 3.2x2.0mm package against available board space. Verify that the enable pin can be effectively utilized for power saving modes in your design.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies and voltage options, including 1.8V variants. The 'OE' suffix typically denotes specific packaging or tape-and-reel configuration details as per manufacturer standards. These oscillators are designed for high reliability in consumer and industrial electronics.

Replacement Considerations

Direct substitutes include other 13.5605 MHz LVCMOS oscillators in 3.2x2.0mm packages from manufacturers like Epson or NDK. Ensure equivalent frequency stability and phase noise characteristics. Verify pinout compatibility for the enable and ground pins. Cross-reference load capacitance requirements to avoid frequency shifts in the new component.