18QHTF21-1.162-OE

Overview

The 18QHTF21-1.162-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 1.162 MHz and utilizes LVCMOS output logic. The device requires a supply voltage of 1.8V and features an enable/disable control function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. The unit supports an operating temperature range from -40°C to 85°C and maintains a frequency stability of ±50ppm.

Feature Summary

• Integrates LVCMOS output logic for standard digital interface compatibility
• Includes hardware enable and disable control functionality
• Utilizes a surface-mount 4-pin no-lead package design

Applications

• General clock signal generation in embedded systems
• Timing reference for low-frequency digital circuits
• Consumer electronics requiring precise timekeeping

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply rail is stable within the specified operating temperature range. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions to prevent assembly issues. Cross-reference the enable pin logic levels with the driving microcontroller outputs.

Selection Notes

Select this component when a low-frequency, low-voltage clock source is required for space-constrained designs. The LVCMOS output is suitable for direct interfacing with standard CMOS logic families. Consider the ±50ppm stability specification against the system's timing budget. The wide industrial temperature range ensures reliability in varied environmental conditions without additional thermal management.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz-based frequency control products. The series includes various frequencies and packages, catering to diverse timing needs. Mercury Electronics has decades of experience in Taiwan's quartz industry, providing reliable components for global markets. This specific model represents a standard XO variant optimized for cost-effective and compact applications.

Replacement Considerations

Direct substitutes include other 1.162 MHz LVCMOS oscillators in 4-SMD packages with compatible voltage and stability specs. Verify pinout compatibility and enable logic polarity before swapping. Alternative models from the same manufacturer with different frequencies or packages may require schematic adjustments.