18QHTF21-4.992-OE

Oscillators Overview

The 18QHTF21-4.992-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 4.992 MHz and utilizes LVCMOS output logic. The device is designed for low-voltage applications with a supply voltage of 1.8V. It features an enable/disable control function to manage power consumption. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.5x2.0 mm. It supports a wide operating temperature range from -40°C to +85°C, ensuring reliability in various environmental conditions.

Oscillators Feature Summary

• LVCMOS output logic for digital interface compatibility
• Enable/Disable control pin for power management
• Compact 4-SMD no-lead surface mount package
• Wide industrial temperature range operation

Oscillators Applications

• Portable electronic devices requiring low power consumption
• Embedded systems with limited voltage supply rails
• Industrial control equipment operating in variable temperatures
• Consumer electronics utilizing standard clock signals

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's power architecture. Ensure the PCB footprint matches the 2.5x2.0 mm SMD package dimensions. Check for any specific reflow soldering profile recommendations provided in the official datasheet to prevent thermal damage during assembly.

Oscillators Selection Notes

Select this component when a precise 4.992 MHz clock signal is required in space-constrained designs. The 1.8V supply voltage makes it suitable for modern low-power digital circuits. The enable/disable feature offers flexibility for power-sensitive applications where the oscillator can be turned off when not in use. Consider the operating temperature range to ensure performance stability in the intended environment.

Oscillators Part Context

This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronics. The series typically includes various frequencies and package sizes, all sharing common electrical characteristics like LVCMOS outputs and low voltage operation. This specific model focuses on the 4.992 MHz frequency point within the 2.5x2.0 mm form factor, catering to niche timing requirements in compact electronics.

Oscillators Replacement Considerations

Direct replacements must match the 4.992 MHz frequency, 1.8V supply, LVCMOS output, and 2.5x2.0 mm package. Verify that substitute parts offer comparable frequency stability and phase noise specifications. Ensure the replacement component also supports the enable/disable functionality if required by the design.