18QHTF21-12.287-OE

Overview

The 18QHTF21-12.287-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a fixed frequency of 12.287 MHz and utilizes LVCMOS output logic. The device is designed for low-voltage applications, supporting 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, No Lead package with dimensions of 7.0mm x 5.0mm. This series is part of Mercury's broader portfolio of frequency control products, which includes quartz crystals and other oscillators.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes enable/disable functionality for power management
• Operates on a 1.8V supply voltage
• Utilizes a surface-mount 4-SMD no-lead package

Applications

• General-purpose clock signal generation in electronic circuits
• Timing reference sources for microprocessors and microcontrollers
• Data communication interfaces requiring precise frequency stability
• Consumer electronics devices utilizing low-voltage logic families

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct voltage and package specifications. Confirm that the OE suffix aligns with the required enable/disable functionality. Cross-reference the part number with authorized distributors to access current datasheets and verify compliance with RoHS standards before finalizing procurement decisions.

Selection Notes

Select this component when a 12.287 MHz clock source is required for 1.8V logic systems. Ensure the application environment supports the operating temperature range specified in the datasheet. Consider the 4-SMD package size constraints during PCB layout design. Verify that the LVCMOS output swing matches the input requirements of the downstream components to guarantee reliable signal integrity.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronic Ind. Co., Ltd., a Taiwanese manufacturer established in 1973 specializing in frequency control products. The series includes various frequencies and voltage options, such as 59.648 MHz and 86.8875 MHz variants. Mercury is recognized as a pioneer in the Taiwan crystal industry, providing quartz crystals, filters, and oscillators for global markets.

Replacement Considerations

Direct substitutes within the same series include models like 18QHTF21-59.648-OE or 18QHTF21-86.8875-OE, though these differ in frequency. Other Mercury parts such as 3QHTF22-12.287-OE offer similar frequencies but may vary in voltage (3.3V) and package dimensions (2.5x2.0 mm). Always verify electrical parameters and mechanical fit before substitution.