18QHTF21-74.948125-OE

Overview

The 18QHTF21-74.948125-OE is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a fixed frequency of 74.948125 MHz and utilizes LVCMOS output logic. The device is designed for low voltage applications, specifically requiring a 1.8V supply voltage. It features an enable/disable control function to manage power consumption. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly on printed circuit boards.

Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated enable and disable control functionality
• Low voltage operation at 1.8V
• Surface-mount 4-SMD no lead package design

Applications

• General purpose clock signal generation
• Digital system timing references
• Embedded controller clock sources
• Communication interface synchronization

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to ensure correct configuration. Confirm that the required operating temperature range and load capacitance match the target application requirements. Check for any recent revisions to the datasheet regarding pin definitions or electrical characteristics before finalizing the bill of materials.

Selection Notes

Select this component when a precise 74.948125 MHz clock source is required with low power consumption capabilities. The 1.8V supply requirement makes it suitable for modern low-voltage digital circuits. Ensure the PCB layout supports the 4-SMD no lead package dimensions and thermal requirements specified in the official mechanical drawings.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronic Ind. Co., Ltd, which specializes in quartz-based frequency control products. The company has a history of manufacturing crystals and oscillators since 1973. This specific model represents a standard frequency option within their portfolio of surface-mount timing devices.

Replacement Considerations

Direct substitutes must match the 74.948125 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no lead package. Verify electrical parameters such as phase noise and jitter if critical. Cross-reference with other manufacturers offering similar small-form-factor oscillators only after confirming full parameter compatibility.