18QHTF21-42.0778-OE

Oscillators Overview

The 18QHTF21-42.0778-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 42.0778 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes an enable/disable control feature. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0mm x 1.6mm.

Oscillators Feature Summary

• Standard XO configuration with LVCMOS output logic
• Integrated enable and disable control functionality
• Compact 4-SMD no-lead surface mount package

Oscillators Applications

• General clock signal generation for digital circuits
• Timing reference for low-voltage embedded systems
• Signal processing applications requiring precise frequency stability

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the PCB footprint matches the 2.0x1.6mm SMD package dimensions to guarantee proper mechanical fit and electrical connection during assembly.

Oscillators Selection Notes

Select this component when a stable 42.0778 MHz clock source is required for low-power applications. The LVCMOS interface ensures compatibility with standard digital logic families. Consider the enable/disable pin if power management or clock gating is necessary within the system architecture. Verify operating temperature range compliance for the intended environment.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz crystal frequency control products. The manufacturer has decades of experience in Taiwan's crystal industry. This series typically offers standard oscillators designed for cost-effective integration into various electronic devices requiring reliable timing signals.

Oscillators Replacement Considerations

Direct substitutes must match the 42.0778 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify equivalent performance specifications including phase noise and stability before substitution.