18QHTF21-83.6545-OE

Overview

The 18QHTF21-83.6545-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 83.6545 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features an enable/disable control function. It is packaged in a compact 4-SMD, no lead form factor, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated enable/disable control functionality
• Standard crystal oscillator design

Applications

• Digital signal processing systems
• Communication equipment timing
• Embedded system clock sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the 4-SMD package footprint matches the PCB layout specifications to guarantee proper soldering and mechanical stability during assembly.

Selection Notes

Select this component when a stable 83.6545 MHz clock source is required for LVCMOS-compatible digital circuits. The choice is driven by the need for a low-voltage 1.8V operation mode and the inclusion of an enable pin for power management. Consider the small 4-SMD package size if space constraints are a primary design factor.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz crystal frequency control products. The series includes various frequencies and packages, with this specific model representing a standard XO variant. Mercury Electronics has a history of manufacturing quartz crystals and oscillators, positioning this component within their established portfolio of timing solutions.

Replacement Considerations

Direct substitutes must match the 83.6545 MHz frequency, LVCMOS output, 1.8V supply, and 4-SMD package. Verify electrical parameters such as phase noise and jitter specifications to ensure functional equivalence in high-speed digital applications.