18QHTF21-19.239-OE

Oscillators Overview

The 18QHTF21-19.239-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 19.239 MHz and utilizes LVCMOS output logic levels. The device is designed for operation with a supply voltage of 1.8V and includes an enable/disable control function for power management. It is housed in a compact 4-SMD, no lead package, suitable for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

• Integrates enable/disable functionality for active power control
• Provides stable LVCMOS clock signal generation
• Utilizes a low-profile surface-mount package design

Oscillators Applications

• Timing and clock signal generation in electronic devices
• Embedded systems requiring precise frequency references
• Consumer electronics with space-constrained layouts

Oscillators 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 enable pin logic levels are compatible with your controlling microcontroller or GPIO to prevent unintended oscillator states during operation.

Oscillators Selection Notes

Select this component when a fixed 19.239 MHz frequency is required with low power consumption capabilities. The integrated enable feature makes it suitable for battery-operated devices where power efficiency is critical. Consider the 4-SMD package size if board real estate is limited compared to larger through-hole or standard SMD oscillator packages.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which focuses on small-form-factor oscillators. The series typically offers various frequencies within a standardized 1.8V LVCMOS format. This specific model provides a mid-range frequency option for general-purpose timing applications.

Oscillators Replacement Considerations

Direct substitutes must match the 19.239 MHz frequency, 1.8V LVCMOS output, and 4-SMD no-lead package dimensions. Verify electrical compatibility including current consumption and enable logic polarity. Alternative parts from other manufacturers require careful review of pinout definitions and thermal characteristics.