18QHTF21-11.289-OE

Overview

The 18QHTF21-11.289-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 11.289 MHz and utilizes LVCMOS output logic levels. The device supports a supply voltage of 1.8V and features an active-high enable/disable control function for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm, designed for surface-mount applications requiring precise timing signals.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes enable/disable pin for power consumption control
• Compact 4-SMD no-lead surface mount package design

Applications

• Digital signal processing circuits requiring clock synchronization
• Communication equipment utilizing standard frequency references
• Embedded systems needing low-power oscillation modes

Procurement Notes

Verify the specific ordering suffix matches the required frequency and voltage specifications. Confirm that the enable/disable functionality aligns with system power management requirements. Ensure the 4-SMD no-lead package footprint corresponds to the PCB layout constraints. Check for any specific handling instructions regarding electrostatic discharge sensitivity during assembly.

Selection Notes

Select this component when a 11.289 MHz reference is required with LVCMOS outputs. Consider the 1.8V supply constraint and the need for an enable pin. Evaluate the 2.0x1.6mm package size against available board space. Compare performance characteristics against alternative oscillators if tighter jitter or phase noise specifications are necessary for the application.

Part Context

This part belongs to the Mercury Electronics 18QHTF series of surface-mount crystal oscillators. The series typically offers various frequencies and supply voltages within a standardized small outline package. The manufacturer specializes in quartz-based frequency control products, including crystals, TCXOs, and VCTCXOs, serving global electronics markets with timing solutions.

Replacement Considerations

Direct substitutes may include other 11.289 MHz LVCMOS oscillators in 4-SMD packages from manufacturers such as Epson, SiTime, or TXC. Verify pinout compatibility, especially the enable pin configuration, before replacement. Ensure equivalent electrical parameters like load capacitance and drive strength are matched to maintain circuit stability.