18QHTF21-7.488-OE

Overview

The 18QHTF21-7.488-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 7.488 MHz and utilizes LVCMOS output logic. The device is designed for low-voltage applications, requiring a 1.8V supply voltage. It features an integrated enable/disable control function to manage power consumption. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. This surface-mount oscillator is suitable for timing applications requiring precise clock signals in space-constrained electronic designs.

Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated enable/disable control functionality
• Compact 4-SMD no-lead surface mount package

Applications

• General purpose clock signal generation
• Low voltage digital circuit timing
• Embedded system clock sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply voltage aligns with your system's power rails. Confirm that the enable/disable pin configuration matches your control logic. Check for any specific reflow soldering profile recommendations provided by the manufacturer to ensure reliable assembly and long-term performance stability.

Selection Notes

Select this component when a low-profile, low-voltage oscillator with control capabilities is required. The 1.8V operation makes it suitable for modern portable and battery-powered devices. Consider the 7.488 MHz frequency for specific baud rate or sampling requirements. The small footprint allows for high-density PCB layouts. Evaluate the need for the enable feature versus always-on operation based on power management strategies.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies within the same package. The 'OE' suffix typically denotes the enable/disable feature. Similar parts in the series include different frequencies like 7.470 MHz or 8.300 MHz. The series provides standardized timing solutions for consumer electronics and industrial applications requiring reliable quartz-based oscillation.

Replacement Considerations

Direct substitutes must match the 7.488 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility and electrical characteristics such as phase noise and jitter if critical. Cross-reference with other manufacturers offering similar low-profile oscillators with enable functions.