18QHTF21-42.780-OE

Oscillators Overview

The 18QHTF21-42.780-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 42.78 MHz and utilizes LVCMOS output logic levels. The device is designed for low voltage applications, functioning at 1.8V. It features an enable/disable control pin for power management flexibility. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm, suitable for surface mount assembly in space-constrained electronic designs.

Oscillators Feature Summary

• LVCMOS output interface for digital logic compatibility
• Integrated enable/disable functionality for power optimization
• Compact 4-SMD no-lead surface mount package design

Oscillators Applications

• Portable consumer electronics requiring low power consumption
• Embedded systems utilizing 1.8V logic families
• Communication modules needing precise clock generation

Oscillators 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 SMD package dimensions to guarantee proper soldering and mechanical stability during assembly processes.

Oscillators Selection Notes

Select this oscillator when a 42.78 MHz reference signal is required within a 1.8V powered environment. Consider the enable pin utility if dynamic power saving is necessary. Evaluate the small form factor against available board space constraints compared to larger packages or alternative frequencies offered by the manufacturer.

Oscillators Part Context

Mercury Electronics specializes in quartz crystals and oscillators, including TCXOs and VCXOs. This model belongs to their standard XO line, characterized by stable frequency generation. The 'OE' suffix typically denotes specific packaging or tape-and-reel options, though exact details require datasheet confirmation. The series supports various frequencies within the 1.8V domain.

Oscillators Replacement Considerations

Direct substitutes must match the 42.78 MHz frequency, 1.8V operation, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify electrical parameters such as phase noise and jitter specifications to ensure functional equivalence in the target application without redesigning the host circuitry.