18QHTF21-3.650-PD

Oscillators Overview

The 18QHTF21-3.650-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a fixed frequency of 3.65 MHz and utilizes an LVCMOS output logic level. The device is designed for low-voltage applications, requiring a supply voltage of 1.8V. It features a power-down function accessible via a standby control input to reduce current consumption when not in use. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly on printed circuit boards.

Oscillators Feature Summary

• Supports LVCMOS output interface for digital signal compatibility
• Includes standby mode for power-down functionality
• Operates on a single 1.8V supply rail
• Utilizes a leadless SMD package for space-constrained designs

Oscillators Applications

• Battery-powered portable electronic devices
• Low-power embedded systems
• Digital communication interfaces requiring precise timing
• Microcontroller clock sources

Oscillators 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 PCB footprint matches the 4-SMD No Lead package dimensions provided in the official datasheet to prevent assembly errors.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a standard LVCMOS output. The integrated power-down feature makes it suitable for applications where energy efficiency during idle periods is critical. Consider the 3.65 MHz frequency specifically if it matches the reference clock requirement of the connected digital logic or microcontroller.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronic, which focuses on low-voltage crystal oscillators. The series typically offers various frequency options within the same physical package and electrical specification framework. The 'PD' suffix indicates the inclusion of a power-down control pin, distinguishing it from continuous-operation variants.

Oscillators Replacement Considerations

Direct substitutes include other 1.8V LVCMOS oscillators in a 4-SMD No Lead package with a 3.65 MHz frequency. Verify that any replacement maintains the same pinout configuration and supports the standby control function to ensure functional equivalence in the existing circuit design.