18QHTF21-8.250-OE

Overview

The 18QHTF21-8.250-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 8.25 MHz and utilizes LVCMOS output logic for digital signal interfacing. The component is designed for low-voltage applications, requiring a supply voltage of 1.8V. It features an active enable/disable control function to manage power consumption during idle periods. The device is housed in a compact 4-SMD, no-lead package with dimensions of 2.0 mm by 1.6 mm, suitable for space-constrained surface-mount PCB layouts.

Feature Summary

• LVCMOS output logic for direct digital interface compatibility
• Integrated enable/disable pin for power management control
• Compact 4-SMD no-lead surface mount package design

Applications

• General purpose clock generation for embedded systems
• Timing reference for microcontroller units
• Digital signal processing circuit synchronization

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your system design before ordering. Confirm that the 1.8V supply voltage aligns with your target platform's power rails. Ensure the 4-SMD footprint matches your PCB layout constraints. Check the latest datasheet for operating temperature range specifications relevant to your environment.

Selection Notes

Select this component when a precise 8.25 MHz timing source is required for low-power digital circuits. The integrated enable feature makes it suitable for battery-operated devices where power efficiency is critical. Consider the small form factor if board space is limited. Ensure the LVCMOS output swing is compatible with the input thresholds of the receiving logic gates.

Part Context

This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronic. The series offers various frequencies and voltage options within a consistent 2.0x1.6 mm package. The 'OE' suffix indicates the presence of an output enable control pin. This family targets cost-sensitive consumer electronics and industrial applications requiring reliable timing signals.

Replacement Considerations

Direct substitutes must match the 8.25 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify pinout compatibility, specifically the location of the enable pin. Cross-reference with other manufacturers offering similar MEMS or quartz oscillators in the same footprint.