18QHTF21-20.500-OE

Oscillators Overview

The 18QHTF21-20.500-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 20.5 MHz and utilizes LVCMOS output logic levels. The device requires 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, designed for surface-mount assembly on printed circuit boards.

Oscillators Feature Summary

• LVCMOS output interface
• Enable/disable control capability
• Surface-mount no lead package

Oscillators Applications

• Digital signal processing systems
• Communication equipment clocking
• Microcontroller timing sources

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target application design before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the 4-SMD no lead footprint matches the PCB layout specifications to guarantee proper solder joint integrity and mechanical stability during operation.

Oscillators Selection Notes

Select this component when a precise 20.5 MHz reference is required with low voltage operation. Consider the enable/disable feature if power efficiency is critical. Verify compatibility with LVCMOS logic families used in the destination circuitry. Evaluate the physical dimensions of the 4-SMD package against available board space constraints.

Oscillators Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which specializes in frequency control products. The series typically offers various frequencies within a standardized small form factor. Mercury Electronic Ind Co., Ltd. has a history of manufacturing quartz crystals and oscillators, positioning this part as a standard solution for timing applications requiring reliable performance.

Oscillators Replacement Considerations

Direct substitutes must match the 20.5 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Check pinout compatibility and electrical characteristics such as phase noise and jitter if specified in the original design documentation.