18QHTF21-1.1386-OE

Overview

The 18QHTF21-1.1386-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 1.1386 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and includes Enable/Disable functionality for power management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated Enable/Disable control for power optimization
• Compact 4-SMD No Lead surface-mount package design

Applications

• Clock signal generation for low-frequency digital circuits
• Timing reference for embedded systems with 1.8V logic
• Power-sensitive portable electronic devices

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD No Lead package footprint matches your PCB layout constraints. Check for any specific enable pin configuration needs in your schematic to utilize the disable feature effectively.

Selection Notes

Select this component when a stable 1.1386 MHz clock source is required for 1.8V logic families. The LVCMOS output ensures direct interfacing with microcontrollers or FPGAs without additional level shifting. The enable/disable feature makes it suitable for battery-operated applications where power conservation during idle states is critical. Consider thermal performance and operating temperature range if used in harsh environments.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronic Ind. Co., Ltd, which specializes in quartz crystal oscillators. The series offers various frequencies tailored for different timing applications. Mercury Electronics has a long history in Taiwan as a pioneer in quartz crystal manufacturing, providing reliable frequency control solutions including TCXOs and VCTCXOs.

Replacement Considerations

Direct replacements must match the 1.1386 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD No Lead package. Verify pinout compatibility and electrical characteristics such as phase noise and jitter if specified in your design. Consult manufacturer cross-reference lists for equivalent parts from other suppliers.