18QHTF21-91.7755-PD

Overview

The 18QHTF21-91.7755-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co. Ltd. It operates at a frequency of 91.7755 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a power-down feature for standby mode control. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. This component is designed for applications requiring precise timing signals within low-voltage digital systems.

Feature Summary

• Integrates LVCMOS output logic for direct interfacing with digital circuits
• Includes a dedicated power-down pin to enable standby mode operation
• Utilizes a surface-mount 4-SMD no-lead package for automated assembly

Applications

• Digital signal processing systems requiring precise clock synchronization
• Communication equipment utilizing high-frequency timing references
• Embedded controllers needing low-voltage oscillator solutions

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD package footprint matches your PCB layout constraints. Check for any specific operating temperature range limitations defined in the official datasheet for your environment.

Selection Notes

Select this model when a 91.7755 MHz frequency is strictly required. The 1.8V supply voltage makes it suitable for modern low-power digital logic families. The integrated power-down feature allows for energy management in battery-operated devices. Consider the small 2.0x1.6mm package size if board space is limited compared to larger oscillator packages.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronic Ind. Co. Ltd, which offers various frequencies within the same physical package. The series provides standardized LVCMOS outputs with power-down capabilities. It serves as a timing source for electronic systems requiring stable quartz-based oscillation without external tuning components.

Replacement Considerations

Direct substitutes must match the 91.7755 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify equivalent electrical specifications such as phase noise and stability before substitution.