18QHTF21-21.005-OE

Oscillators Overview

The 18QHTF21-21.005-OE is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a fixed frequency of 21.005 MHz and utilizes LVCMOS output logic levels. The device is designed for low-voltage applications, requiring 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 2.0mm x 1.6mm. This surface-mount oscillator is suitable for timing and clock signal generation in electronic circuits requiring precise frequency stability.

Oscillators Feature Summary

• Provides stable clock signals using LVCMOS output logic
• Includes enable/disable functionality for power management
• Designed for low-voltage operation at 1.8V
• Utilizes a compact lead-free surface-mount package

Oscillators Applications

• Timing and clock signal generation in electronic devices
• Embedded systems requiring precise frequency references
• Consumer electronics with space constraints

Oscillators Procurement Notes

Verify the exact specifications from the official product datasheet before integration. Confirm that the 1.8V supply voltage and LVCMOS output compatibility match your system requirements. Ensure the 4-SMD no-lead package footprint aligns with your PCB layout. Check for any specific handling or storage instructions provided by the manufacturer to maintain component integrity during assembly.

Oscillators Selection Notes

Select this oscillator when a 21.005 MHz frequency is required for system timing. Consider the 1.8V operating voltage to ensure compatibility with low-power logic families. The enable/disable feature makes it suitable for battery-operated applications where power efficiency is critical. Verify that the small form factor fits within the available board space constraints of the design.

Oscillators Part Context

Mercury Electronic Ind. Co., Ltd. is a Taiwan-based manufacturer specializing in frequency-control products, including quartz crystals and oscillators. The company has a long history in the industry, focusing on precision timing components. The 18QHTF21 series represents their line of surface-mount crystal oscillators designed for various consumer and industrial electronic applications.

Oscillators Replacement Considerations

Direct substitutes may include other 21.005 MHz LVCMOS oscillators in similar packages. Verify pinout compatibility and electrical characteristics such as load capacitance and drive strength. Ensure the replacement part supports the same 1.8V supply voltage and enable/disable control scheme to maintain system functionality.