18QHTF21-49.3333-OE

Overview

The 18QHTF21-49.3333-OE is a standard frequency crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a nominal frequency of 49.3333 MHz and utilizes LVCMOS output logic levels. The device is designed for low-voltage applications, functioning with a supply voltage of 1.8V. It features an enable/disable control function to manage power consumption and operational states. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly processes. This oscillator provides precise timing signals required for digital circuit synchronization and clock distribution in various electronic systems.

Feature Summary

• Provides stable 49.3333 MHz timing signal via LVCMOS interface
• Operates on 1.8V supply voltage for low-power efficiency
• Includes hardware enable/disable control functionality
• Utilizes leadless SMD package for automated surface mounting

Applications

• Precision timing circuits in consumer electronics
• Clock generation for digital communication interfaces
• Synchronization sources for embedded processing systems
• Timing references in portable battery-powered devices

Procurement Notes

Verify the specific suffix 'OE' against the manufacturer's current datasheet to confirm pinout configuration and electrical tolerances. Ensure that the 1.8V supply requirement aligns with the target system's voltage rails. Confirm that the LVCMOS output swing is compatible with the receiving logic inputs. Check for any recent revisions to the 18QHTF21 series that may affect mechanical dimensions or thermal characteristics before finalizing the bill of materials.

Selection Notes

Select this component when a 49.3333 MHz reference is required with minimal power consumption due to the 1.8V operation. The LVCMOS output is suitable for direct interfacing with standard digital logic families operating at similar voltages. The enable/disable feature allows for dynamic power management strategies. Consider the leadless package type if space constraints are critical and reflow soldering capabilities are available. Compare jitter specifications against other oscillators if high-frequency stability is paramount for the application.

Part Context

This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronic Ind. Co., Ltd. The series offers various frequencies and voltage options within a standardized small outline no-lead footprint. It represents a solution for timing needs where size and power efficiency are prioritized over higher voltage compatibility. The manufacturer specializes in quartz-based frequency control components, including crystals, filters, and temperature-compensated oscillators, serving global electronics markets.

Replacement Considerations

Direct substitutes must match the 49.3333 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD No Lead package. Verify equivalent jitter performance and enable/disable functionality. Cross-reference with other manufacturers offering similar low-profile oscillators, ensuring pin-to-pin compatibility and identical electrical parameters to avoid redesign efforts.