18QHTF21-12.900-OE

Overview

The 18QHTF21-12.900-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 12.9 MHz and utilizes LVCMOS output logic levels. The device supports a supply voltage of 1.8V and includes an enable/disable control function for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• Supports LVCMOS output interface for digital logic compatibility
• Features integrated enable/disable pin for active power control
• Utilizes a small form factor SMD package for space-constrained designs

Applications

• General-purpose clock signal generation in embedded systems
• Timing reference for microcontrollers and processors
• Data communication interfaces requiring stable clock sources

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 PCB footprint matches the 2.0x1.6mm 4-SMD no lead package specifications to guarantee proper soldering and mechanical stability during assembly processes.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a standard LVCMOS output. The enable/disable feature makes it suitable for battery-powered devices needing power optimization. Consider the physical size constraints of the 2.0x1.6mm package when designing the layout. Verify that the 12.9 MHz frequency meets the exact timing needs of the target application without requiring external dividers or multipliers.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies within a standardized small outline package. These components are designed for general electronic applications where reliable timing is essential. The manufacturer specializes in frequency control products, providing quartz crystals and oscillators for diverse industrial and consumer electronics markets.

Replacement Considerations

Direct substitutes include other 12.9 MHz XO models with identical 1.8V LVCMOS outputs and 4-SMD 2.0x1.6mm packages. Ensure any replacement maintains the same enable/disable functionality and electrical characteristics. Cross-reference with Mercury's official cross-reference lists for verified compatible parts.