18QHTF21-12.243-OE

Overview

The 18QHTF21-12.243-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 12.243 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features an enable/disable control function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. This component is suitable for applications requiring precise timing signals in low-voltage digital circuits.

Feature Summary

• Supports LVCMOS output logic for direct interface with digital systems
• Includes hardware enable/disable functionality for power management
• Utilizes a small form factor SMD package for surface mount assembly

Applications

• Digital signal processing equipment
• Communication modules requiring clock synchronization
• Embedded systems with low-voltage microcontrollers

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure that the 1.8V supply voltage aligns with your system's power rails. Confirm that the enable/disable pin configuration matches your control logic to avoid unintended oscillator states during operation.

Selection Notes

Select this model when a 12.243 MHz clock source is required in a 1.8V environment. Consider the 4-SMD package size if board space is limited. Evaluate the need for enable/disable control versus always-on oscillators based on system power efficiency goals. Compare performance metrics such as phase noise and stability if high-precision timing is critical for the application.

Part Context

This part belongs to the 18QHTF series of surface-mount oscillators from Mercury Electronics. The series typically offers various frequencies and supply voltages. The 'OE' suffix may indicate specific packaging or testing options defined by the manufacturer. It is part of a broader range of frequency control products including crystals and other oscillator types offered by the company.

Replacement Considerations

Direct replacements must match the 12.243 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package footprint. Verify electrical compatibility and pinout alignment. Cross-reference with Mercury Electronics' official substitution lists for guaranteed compatibility.