18QHTF21-50.218-PD

Overview

The 18QHTF21-50.218-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 50.218 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a standby or power-down function to manage energy consumption. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm. This component is engineered for high reliability in digital signal processing applications requiring precise clock timing.

Feature Summary

• Supports low-voltage operation at 1.8V for efficient power management
• Integrates standby mode capability to reduce current draw during idle periods
• Utilizes LVCMOS output logic for direct interface with digital circuits
• Employssurface-mount technology for automated assembly compatibility

Applications

• Digital signal processing systems
• Communication equipment clocking
• Embedded control units
• Data acquisition modules

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the system design specifications before procurement. Ensure that the 1.8V supply rail stability meets the oscillator's operational limits. Confirm that the PCB layout accommodates the 4-SMD no-lead footprint dimensions accurately to prevent soldering defects. Cross-reference the datasheet for any updates regarding the manufacturing origin or compliance certifications.

Selection Notes

Select this model when a 50.218 MHz clock source is required with minimal power consumption. The 1.8V operating voltage makes it suitable for modern low-power digital logic families. Consider the physical size constraints of the application, as the 2.0x1.6 mm package is highly compact. Evaluate the need for standby functionality to extend battery life in portable devices. Ensure compatibility with the target system's noise immunity requirements.

Part Context

This component belongs to the Mercury Electronics surface-mount oscillator series, which focuses on providing stable frequency references for electronic circuits. The 18QHTF21 series typically offers various frequencies within a standardized small outline package format. These oscillators are designed to replace discrete crystal and amplifier solutions, simplifying board space and improving timing accuracy in consumer and industrial electronics.

Replacement Considerations

Direct substitutes must match the 50.218 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify pinout compatibility and thermal characteristics. Alternative models from other manufacturers may require schematic adjustments if output drive strength differs.