18QHTF21-11.98135-OE

Overview

The 18QHTF21-11.98135-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a fixed frequency of 11.98135 MHz and utilizes LVCMOS output logic. The device is designed for low-voltage applications with 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. This component is suitable for timing applications requiring precise clock signals in space-constrained electronic designs.

Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated enable/disable functionality for power management
• Compact 4-SMD no-lead surface mount package

Applications

• General purpose clock signal generation
• Embedded system timing references
• Consumer electronics circuit boards

Procurement Notes

Verify the specific ordering suffix OE against the manufacturer's current datasheet to ensure correct pinout and electrical specifications. Confirm that the 1.8V supply requirement aligns with the target circuit design. Check for availability constraints as this is a marketplace product which may have limited stock or variable shipping times from the supplier Mercury Electronic Ind. Co., Ltd.

Selection Notes

Select this component when a 11.98135 MHz clock source is required with LVCMOS outputs. Ensure the design supports the 1.8V operating voltage. The small 2.0x1.6mm footprint makes it appropriate for high-density PCB layouts. Consider the enable/disable feature if power efficiency during idle states is a design priority compared to always-on oscillators.

Part Context

This part belongs to the QHTF series of crystal oscillators from Mercury Electronics. The series typically offers various frequencies and voltages in similar small packages. Mercury is a Taiwan-based manufacturer specializing in quartz crystals and oscillators since 1973. This specific model represents a standard XO variant within their portfolio of frequency control products.

Replacement Considerations

Direct substitutes include other 11.98135 MHz LVCMOS oscillators in 4-SMD 2.0x1.6mm packages from manufacturers like Epson or SiTime. Verify voltage tolerance and load capacitance requirements before swapping. Ensure the replacement supports the same enable/disable control logic if that feature is utilized in the original design.