18QHTF21-13.568-OE

Overview

The 18QHTF21-13.568-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 13.568 MHz and utilizes LVCMOS output logic levels. The device requires a 1.8V supply voltage and includes an enable/disable control function for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. This component is designed for timing applications requiring precise clock signals in space-constrained electronic systems.

Feature Summary

• Provides stable 13.568 MHz clock signal generation using LVCMOS output interface
• Features low voltage operation at 1.8V with integrated enable and disable control functionality
• Utilizes a compact 4-SMD no-lead surface mount package measuring 2.0mm by 1.6mm

Applications

• RFID reader clock synchronization
• Wireless communication module timing
• Portable electronic device clock sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply rail can maintain stability under all operating conditions. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions precisely to avoid soldering issues during assembly.

Selection Notes

Select this oscillator when a 13.568 MHz frequency is required for RFID or similar wireless standards. Consider the 1.8V supply constraint and LVCMOS compatibility with your microcontroller or FPGA inputs. The small 2.0x1.6mm package makes it suitable for high-density board layouts where space is limited compared to larger through-hole or standard SMD packages.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies within the same physical footprint, allowing designers to standardize on a single package type while adjusting frequency via the model suffix. The 'OE' suffix typically denotes the enable pin configuration.

Replacement Considerations

Direct replacements must match the 13.568 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify that any substitute component supports the same enable/disable control logic and meets identical electrical specifications for phase noise and stability.