18QHTF21-48.9143-OE

Overview

The 18QHTF21-48.9143-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a nominal frequency of 48.9143 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and features an enable/disable control function. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications requiring precise timing signals.

Feature Summary

• Provides stable clock signals via LVCMOS output interface
• Includes hardware enable and disable functionality for power management
• Utilizes quartz crystal technology for frequency stability

Applications

• Electronic systems requiring 48.9143 MHz timing references
• Embedded devices utilizing LVCMOS-compatible interfaces
• Portable electronics benefiting from low-voltage operation

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your system design before procurement. Confirm that the 1.8V supply voltage aligns with your target circuit's power rails. Ensure the 4-SMD no-lead package dimensions fit within your PCB layout constraints. Cross-reference the datasheet for operating temperature ranges to guarantee reliability under expected environmental conditions.

Selection Notes

Select this component when a fixed 48.9143 MHz frequency is required rather than a programmable range. The LVCMOS output is suitable for digital logic interfacing without additional buffering. The enable pin allows for dynamic power control, making it appropriate for battery-operated devices. Consider the 1.8V supply constraint as a primary selection criterion over higher voltage alternatives.

Part Context

Mercury Electronic Ind. Co., Ltd. is a Taiwan-based manufacturer specializing in frequency-control products, including quartz crystals and oscillators. This part belongs to their XO series, which offers standard performance levels. The company has decades of experience in the quartz industry, providing components for various consumer and industrial electronic applications.

Replacement Considerations

Direct substitutes must match the 48.9143 MHz frequency, LVCMOS output, 1.8V supply, and 4-SMD package. Verify electrical parameters such as phase noise and jitter specifications if strict timing accuracy is required. Check for equivalent enable/disable functionality to maintain system power management strategies.