18QHTF21-11.044-OE

Overview

The 18QHTF21-11.044-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 11.044 MHz and utilizes LVCMOS output logic levels. The device is designed for low-voltage applications, supporting a supply voltage of 1.8V. It features an integrated enable/disable control function to manage power consumption. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm, suitable for surface-mount assembly.

Feature Summary

• Supports LVCMOS output signal compatibility
• Includes hardware enable/disable control functionality
• Operates on a 1.8V power supply rail

Applications

• General-purpose clock generation in embedded systems
• Timing reference for microcontrollers requiring 11.044 MHz
• Low-power portable electronic devices

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 system design. Check for RoHS compliance status if environmental regulations apply to the end product. Ensure the 4-SMD no-lead package footprint matches the PCB layout constraints.

Selection Notes

Select this component when a precise 11.044 MHz timing source is required for digital circuits. The choice is driven by the need for low-voltage operation at 1.8V and the integration of enable/disable controls for power management. Consider the small 2.0x1.6 mm package size for space-constrained designs. Verify that LVCMOS output levels are compatible with the receiving logic inputs of the connected components.

Part Context

This part belongs to the QHTF series of surface-mount crystal oscillators from Mercury Electronics. The series typically offers various frequencies and voltage options within a standardized small outline package. The '18' prefix indicates the 1.8V operating voltage variant, while '21' denotes the package style. This specific model provides a stable clock signal for synchronous digital systems.

Replacement Considerations

Direct substitutes include other 11.044 MHz XO components with identical 1.8V LVCMOS outputs and 4-SMD no-lead footprints. Cross-reference with similar Mercury Electronics parts such as the 3QHTF21-11.044-OE if 3.3V operation is acceptable. Ensure any replacement maintains the same enable/disable pin configuration and physical dimensions.