18QHTF21-13.41875-OE

Overview

The 18QHTF21-13.41875-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 13.41875 MHz and utilizes LVCMOS output logic. The device is designed for low-voltage applications with a supply voltage of 1.8V. It features an enable/disable control function to manage power consumption. The component is housed in a compact 4-SMD package with dimensions of 2.0mm x 1.6mm. The maximum supply current is specified as 22mA. This oscillator is suitable for timing applications requiring precise frequency stability in space-constrained electronic designs.

Feature Summary

• Provides stable 13.41875 MHz clock signal generation using LVCMOS logic levels
• Incorporates enable/disable functionality for active power management
• Utilizes a base crystal resonator for accurate frequency control
• Designed for low-voltage operation at 1.8V supply

Applications

• General-purpose digital circuit timing
• Microcontroller clock sources
• Communication interface synchronization
• Embedded system clock generation

Procurement Notes

Verify the exact part number suffix, specifically the OE designation, which indicates the enable/disable feature. Confirm the operating temperature range and load capacitance requirements against the specific application datasheet. Ensure the 4-SMD footprint matches the PCB layout constraints. Cross-reference the manufacturer's latest documentation for any updates on pin configuration or electrical characteristics before finalizing procurement.

Selection Notes

Select this component when a low-profile, low-voltage oscillator with power control is required. The 1.8V supply makes it suitable for modern portable and battery-operated devices. The enable pin allows for dynamic power saving during idle periods. Consider the 2.0x1.6mm package size for high-density board layouts. Ensure the LVCMOS output compatibility with the receiving logic inputs of the target circuit.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronic, a supplier specializing in quartz crystals and oscillators. The series typically offers various frequencies and package options. Mercury Electronics has been manufacturing frequency control products since 1973, positioning itself as a pioneer in Taiwan's crystal industry. This specific model represents a standard XO variant within their portfolio.

Replacement Considerations

Direct substitutes must match the 13.41875 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify that alternative parts include the enable/disable functionality if power management is critical. Check for equivalent APR and stability specifications. Common replacements may include other manufacturers' 1.8V XO components in similar SMD packages.