18QHTF21-75.565-OE

Overview

The 18QHTF21-75.565-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 75.565 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes an enable/disable control pin for power management. It is housed in a compact 4-SMD, no lead package with dimensions of 2.0mm x 1.6mm. This component is designed for applications requiring precise timing signals within space-constrained electronic systems.

Feature Summary

• Integrates LVCMOS output logic for direct interfacing with digital circuits
• Features an enable/disable pin to manage power consumption states
• Utilizes a compact surface-mount package suitable for high-density PCB layouts

Applications

• General purpose clock signal generation in embedded systems
• Timing reference for data communication interfaces
• Clock source for microcontrollers and digital logic circuits

Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against your system design before procurement. Confirm that the 1.8V supply voltage aligns with your power architecture. Ensure the 4-SMD footprint matches your PCB silkscreen and solder mask definitions. Check for any specific handling instructions regarding electrostatic discharge during assembly.

Selection Notes

Select this component when a 75.565 MHz frequency is required with low voltage operation. Consider the 1.8V supply constraint and LVCMOS compatibility with downstream logic levels. Evaluate the physical size constraints of the 2.0x1.6mm package against available board space. Verify that the enable/disable functionality supports your power management strategy.

Part Context

This part belongs to the Mercury Electronics 18QHTF series of surface-mount crystal oscillators. The series offers various frequencies and supply voltages, typically ranging from 1.8V to 3.3V. The 'OE' suffix indicates the presence of an enable pin, distinguishing it from versions without control features. These oscillators are designed for consumer electronics and portable devices where size and power efficiency are critical.

Replacement Considerations

Direct replacements must match the 75.565 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility, specifically the enable pin location. Cross-reference specifications for frequency stability and phase noise if strict timing performance is required.