18QHTF21-42.450-OE

Oscillators Overview

The 18QHTF21-42.450-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd, operating at a fixed frequency of 42.45 MHz. It utilizes LVCMOS output logic and supports a supply voltage of 1.8V. The device features an enable/disable control function for power management. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

• LVCMOS output logic interface
• Integrated enable and disable control functionality
• Compact 4-SMD no lead surface mount package

Oscillators Applications

• General clock signal generation
• Digital circuit timing reference
• Embedded system synchronization

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target application design specifications before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the 4-SMD footprint matches the PCB layout constraints. Cross-reference the manufacturer datasheet for detailed electrical characteristics to guarantee compatibility with the intended digital logic levels.

Oscillators Selection Notes

Select this component when a stable 42.45 MHz reference is required for low-voltage digital systems. The LVCMOS output ensures direct interfacing with standard logic inputs without additional level shifting. The enable pin allows for dynamic power control, making it suitable for battery-operated or power-sensitive designs. Verify thermal performance within the specified operating temperature range during selection.

Oscillators Part Context

This part belongs to the Mercury Electronics XO series, which provides standard frequency oscillators for various electronic applications. Mercury Electronics has a long history in quartz crystal manufacturing, offering a range of frequency control products including TCXOs and VCXOs. This specific model represents a standard fixed-frequency solution within their portfolio.

Oscillators Replacement Considerations

Direct substitutes must match the 42.45 MHz frequency, LVCMOS output type, 1.8V supply, and 4-SMD package. Check equivalent models from other manufacturers ensuring identical pinout and electrical parameters. Verify that any replacement maintains the same enable/disable functionality and operating temperature range to ensure seamless integration.