18QHTF21-49.5067-PD

Overview

The 18QHTF21-49.5067-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 49.5067 MHz with an LVCMOS output logic interface. The device requires a 1.8V supply voltage and includes a standby (power down) function for energy management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications.

Feature Summary

• Supports low-power operation via a dedicated standby mode
• Provides stable timing signals through LVCMOS output interface
• Designed for surface-mount integration in space-constrained layouts

Applications

• General clock generation for digital circuits
• Timing reference for communication interfaces
• Power-sensitive embedded systems requiring standby capability

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Ensure the 1.8V supply rail stability meets the oscillator's operational specifications. Confirm that the PCB footprint matches the 4-SMD No Lead package dimensions to avoid assembly issues during manufacturing.

Selection Notes

Select this component when a precise 49.5067 MHz signal is required with minimal power consumption. The LVCMOS output ensures compatibility with standard digital logic families. Consider the standby feature if system power management strategies involve periodic sleep modes. Validate the operating temperature range against environmental conditions.

Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series typically offers various frequencies and supply voltages, maintaining consistent package dimensions for design flexibility. The 'PD' suffix indicates the inclusion of a power-down control pin or functionality within the standard XO configuration.

Replacement Considerations

Direct substitutes must match the 49.5067 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD No Lead package. Verify pinout compatibility and electrical characteristics such as phase noise and jitter if critical to the application.