18QHTF21-50.044667-PD

Overview

The 18QHTF21-50.044667-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 50.044667 MHz and utilizes LVCMOS output logic. The device is designed for low-voltage applications, functioning with a supply voltage of 1.8V. It features a standby or power-down mode capability to reduce energy consumption when not in active use. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm, suitable for space-constrained surface-mount designs.

Feature Summary

• LVCMOS output logic for standard digital interface compatibility
• Integrated standby or power-down mode for power management
• Low-voltage operation optimized for 1.8V supply systems
• Compact 4-SMD no-lead surface mount package design

Applications

• Timing circuits requiring precise 50.044667 MHz reference
• Low-power embedded systems and portable electronics
• Digital signal processing interfaces using LVCMOS standards
• Space-constrained printed circuit board layouts

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 no-lead package footprint matches your PCB silkscreen and solder mask definitions. Check for any industry-specific reliability certifications required for your application environment.

Selection Notes

Select this component when a precise 50.044667 MHz clock source is needed with minimal power consumption. The LVCMOS output ensures compatibility with standard logic families operating at 1.8V. Consider the small 2.0x1.6 mm footprint if board real estate is limited. Evaluate the standby feature if power efficiency during idle states is a critical design parameter.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in frequency control products. The series typically offers various frequencies and voltages within a standardized small outline package format. Mercury has been a pioneer in the crystal industry since 1973, providing reliable timing solutions for global electronics manufacturing.

Replacement Considerations

Direct substitutes include other 50.044667 MHz LVCMOS oscillators in 4-SMD packages from compatible manufacturers. Verify pinout compatibility and electrical specifications such as rise/fall times and drive strength. Alternative parts may require adjustment of decoupling capacitor values due to differing current consumption profiles.