18QHTF21-11.28845-PD

Overview

The 18QHTF21-11.28845-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 11.28845 MHz and utilizes LVCMOS output logic. The device is designed for surface mount applications with a supply voltage of 1.8V. It features a Standby (Power Down) function to manage power consumption. The component 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 Standby (Power Down) functionality for power management
• Designed for surface mount assembly in small form factor packages

Applications

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

Procurement Notes

Verify the specific frequency tolerance and operating temperature range requirements against the official datasheet before procurement. Confirm that the 1.8V supply voltage aligns with the target system design. Ensure the 4-SMD package footprint matches the PCB layout constraints. Check for RoHS compliance status if required by project specifications.

Selection Notes

Select this component when a precise 11.28845 MHz clock source is required for low-voltage digital circuits. The choice is driven by the need for LVCMOS compatibility and the availability of a power-down feature. Consider the physical size constraints of the 2.0x1.6mm package during the layout phase. Evaluate the thermal performance within the specified operating temperature range.

Part Context

This part belongs to the Mercury Electronics 18QHTF21 series of surface mount crystal oscillators. The series typically offers various frequencies with standardized LVCMOS outputs and 1.8V operation. The 'PD' suffix indicates the inclusion of a power-down control feature. This family is designed for applications requiring compact timing solutions with low power consumption profiles.

Replacement Considerations

Direct substitutes must match the 11.28845 MHz frequency, LVCMOS output, 1.8V supply, and 4-SMD package dimensions. Verify pinout compatibility and electrical characteristics such as jitter and duty cycle. Cross-reference with other manufacturers offering similar SMD oscillators with identical form factors and electrical specs.