18QHTF21-12.11876-PD

Overview

The 18QHTF21-12.11876-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 12.11876 MHz and utilizes an LVCMOS output signal format. The device functions with a supply voltage of 1.8V and includes a standby or power-down capability for energy management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• Supports low-voltage operation at 1.8V
• Features LVCMOS output interface
• Includes standby mode functionality

Applications

• Digital signal processing systems
• Communication equipment timing
• Embedded control circuits

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no-lead package footprint matches your PCB layout constraints. Cross-reference the part number suffix to confirm the presence of the power-down feature if critical for your application.

Selection Notes

Select this component when a stable 12.11876 MHz clock source is required for low-power digital logic. The LVCMOS output ensures compatibility with standard CMOS inputs. Consider the 1.8V operating voltage to meet energy efficiency goals. The small form factor supports dense board layouts. Verify thermal performance within the intended operating environment.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, designed for general-purpose timing applications. The series offers various frequencies with consistent LVCMOS outputs and low-voltage operation. Mercury Electronics specializes in quartz-based frequency control products, providing reliable timing solutions for industrial and consumer electronics markets.

Replacement Considerations

Direct replacements must match the 12.11876 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Check datasheets for equivalent parts from other manufacturers ensuring identical pinout and electrical characteristics. Verify that any substitute also supports the standby function if required.