18QHTF21-12.345678-OE

Overview

The 18QHTF21-12.345678-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 12.345678 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 housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes hardware Enable/Disable control functionality
• Utilizes a compact 4-SMD surface-mount package

Applications

• General-purpose clock signal generation
• Digital circuit timing references
• Embedded system clock sources

Procurement Notes

Verify the specific frequency suffix matches the required 12.345678 MHz operation. Confirm that the 1.8V supply voltage aligns with the target system design. Ensure the 4-SMD No Lead package footprint is compatible with the PCB layout. Check official datasheets for precise electrical tolerances and temperature ranges before finalizing procurement.

Selection Notes

Select this component when a precise 12.345678 MHz clock source is required for low-voltage digital circuits. The LVCMOS output ensures direct interfacing with standard logic families. The integrated enable/disable pin allows for power management optimization. Verify that the operating temperature range meets the environmental requirements of the intended application.

Part Context

This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronics. The series offers various frequencies within a small 2.0x1.6mm footprint. These oscillators are designed for applications requiring stable clock signals in space-constrained electronic devices. The manufacturer specializes in quartz crystal products with extensive industry experience.

Replacement Considerations

Direct substitutes must match the 12.345678 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Cross-reference with other manufacturers offering identical pinouts and electrical specifications. Ensure thermal and mechanical compatibility if replacing in existing designs.