18QHTF21-49.480-PD

Overview

The 18QHTF21-49.480-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 49.48 MHz and utilizes an LVCMOS output interface. The device is powered by a single 1.8V supply voltage and features a standby or power-down function for energy management. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0mm x 1.6mm. This component is designed for surface-mount applications requiring precise timing signals.

Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby and power-down functionality
• Utilizes LVCMOS output logic levels

Applications

• General-purpose digital timing circuits
• Embedded systems requiring clock sources
• Consumer electronics with space constraints

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions to guarantee proper assembly and electrical connectivity during manufacturing.

Selection Notes

Select this model when a small form factor is required alongside low-power consumption capabilities. The LVCMOS interface ensures compatibility with standard digital logic families. Consider the standby feature if power efficiency is critical for battery-operated devices. Validate that the operating temperature range meets your environmental specifications.

Part Context

This part belongs to the Mercury Electronics XO series, which focuses on providing reliable timing solutions in miniature packages. The manufacturer specializes in quartz crystals and oscillators, offering various frequencies and packaging options for diverse electronic applications. The 'PD' suffix typically indicates the presence of a power-down control pin.

Replacement Considerations

Direct substitutes must match the 49.48 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify equivalent electrical characteristics such as current consumption and stability. Cross-reference with other manufacturers offering similar surface-mount oscillators with identical pinouts and voltage requirements.