18QHTF21-49.4433-OE

Overview

The 18QHTF21-49.4433-OE is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 49.4433 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes enable/disable functionality for power management. It is housed in a compact 4-SMD, No Lead package suitable for surface-mount applications.

Feature Summary

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

Applications

• General purpose clock signal generation
• Digital circuit timing reference
• Embedded system clock sources

Procurement Notes

Verify the specific frequency suffix matches the required 49.4433 MHz specification. Confirm that the 1.8V supply voltage aligns with the target system's power rails. Ensure the 4-SMD package footprint corresponds to the PCB layout requirements. Check for any specific environmental or reliability certifications if applicable to the end application.

Selection Notes

Select this component when a precise 49.4433 MHz clock source is required for low-voltage digital circuits. The LVCMOS output ensures direct interfacing with standard logic families without additional level shifting. The enable feature allows for dynamic power control, making it suitable for battery-operated or energy-efficient designs requiring strict timing accuracy.

Part Context

This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronics. The series offers various frequencies with consistent LVCMOS outputs and 1.8V operation. The 'OE' suffix typically denotes specific ordering or packaging variations within the manufacturer's catalog structure.

Replacement Considerations

Direct substitutes include other 18QHTF21 series variants with identical pinout and electrical characteristics but different frequency suffixes, provided the frequency requirement changes. Cross-brand replacements must match the 4-SMD package, 1.8V supply, LVCMOS output, and enable functionality.