18QHTF21-13.535-PD

Overview

The 18QHTF21-13.535-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 13.535 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby or power-down function for energy management. It is housed in a compact 4-SMD, no lead package, designed for surface-mount applications requiring precise timing signals.

Feature Summary

• LVCMOS output logic interface
• Integrated standby and power-down functionality
• Surface-mount 4-SMD no lead package

Applications

• General purpose clock signal generation
• Digital circuit timing reference
• Embedded system clock sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target application datasheet. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the PCB footprint matches the 4-SMD no lead package dimensions provided in the official mechanical drawing to prevent assembly errors.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a standard LVCMOS interface. The inclusion of a power-down feature makes it suitable for battery-operated devices where standby current reduction is critical. Verify that the 13.535 MHz frequency meets the specific timing needs of the digital subsystem.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz crystal oscillators. The manufacturer has decades of experience in frequency control products, including crystals and TCXOs. This series typically offers standard frequencies with compact packaging options suitable for modern electronic designs.

Replacement Considerations

Direct substitutes within the same series include other frequency variants such as 18QHTF21-35.000-PD or 18QHTF21-51.200-PD if different clock speeds are needed. Ensure any replacement maintains the 1.8V supply requirement and LVCMOS output type to guarantee electrical compatibility.