18QHTF21-13.490-OE

Overview

The 18QHTF21-13.490-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 13.490 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 2.0x1.6 mm.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes enable/disable functionality for power management
• Utilizes a leadless SMD package for surface mount assembly

Applications

• General purpose timing clock generation
• Embedded systems requiring low voltage operation
• Consumer electronics with space constraints

Procurement Notes

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

Selection Notes

Select this component when a precise 13.490 MHz reference is required in a minimal footprint. The 1.8V supply requirement makes it suitable for modern low-power portable devices. Consider the enable pin if dynamic power saving is necessary. Verify that the LVCMOS swing levels are compatible with the receiving logic inputs of your microcontroller or FPGA to ensure signal integrity across the operating temperature range.

Part Context

This part belongs to the QHTF series of high-frequency crystal oscillators from Mercury Electronics. The series typically offers various frequencies and voltage options within a standardized 2.0x1.6 mm package. These components are designed to replace older through-hole or larger surface-mount oscillators in applications demanding miniaturization and lower power consumption while maintaining stable timing performance.

Replacement Considerations

Direct replacements must match the 13.490 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm footprint. Check equivalent parts from other manufacturers such as Epson or NDK that offer similar pin-compatible solutions with identical electrical characteristics.