18QHTF21-13.5785-OE

Overview

The 18QHTF21-13.5785-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 13.578 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes enable/disable control capabilities. It is housed in a compact 4-SMD, no lead package with dimensions of 2.0x1.6 mm.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Integrates enable and disable functionality for power management
• Utilizes a small form factor surface-mount package

Applications

• General purpose clock signal generation
• Embedded system timing references
• Consumer electronics circuit boards

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the 4-SMD no-lead package footprint matches the PCB layout specifications to guarantee proper soldering and mechanical stability during assembly.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a precise 13.578 MHz reference. The LVCMOS output is suitable for direct interfacing with standard digital logic families. Consider the physical size constraints of the application, as the 2.0x1.6 mm package offers a compact solution for space-limited designs requiring enable/disable control features.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which specializes in frequency control products. The series typically offers various frequencies within a standardized small outline package format. Mercury Electronics has been a manufacturer of these components since 1973, establishing a presence in the Taiwan crystal industry.

Replacement Considerations

Compatible substitutes include other 13.578 MHz LVCMOS oscillators in 4-SMD packages operating at 1.8V. Verify pinout compatibility and electrical characteristics such as phase noise and jitter before substitution. Models like 18QHTF21 variants with different frequencies are not electrically interchangeable.