18QHTF21-1.155072-OE

Overview

The 18QHTF21-1.155072-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 1.155072 MHz and utilizes LVCMOS output logic levels. The device is designed for a supply voltage of 1.8V and includes an enable/disable control function for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• Integrates enable/disable functionality for active power control
• Provides stable LVCMOS output signals for digital interfaces
• Utilizes a miniature 4-SMD no-lead surface mount package

Applications

• Clock generation for low-power embedded systems
• Timing reference for communication interface circuits
• Synchronization sources for portable electronic devices

Procurement Notes

Verify the specific suffix OE against the manufacturer's current datasheet to confirm pinout compatibility and electrical specifications. Ensure the 1.8V supply requirement aligns with the target system design. Confirm that the 2.0x1.6 mm footprint matches the PCB layout constraints before finalizing procurement orders.

Selection Notes

Select this component when a precise 1.155072 MHz clock signal is required with minimal power consumption. The integrated enable feature allows for dynamic power management in battery-operated devices. Consider the small form factor for space-constrained designs where standard through-hole or larger SMD oscillators do not fit.

Part Context

This model belongs to the QHTF series of high-frequency crystal oscillators from Mercury Electronics. The series is characterized by low phase noise and high stability. The 18 prefix typically indicates the 1.8V operating voltage variant within the product line, distinguishing it from other voltage options available in the same family.

Replacement Considerations

Cross-reference part numbers such as 3QHTF21-1.155072-OE if a 3.3V supply version is acceptable, noting the voltage difference. Verify mechanical compatibility with the 2.0x1.6 mm footprint when considering alternative manufacturers' equivalents.