18QHTF21-4.1943-PD

Oscillators Overview

The 18QHTF21-4.1943-PD is a crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 4.1943 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm. This component is designed for applications requiring precise clock signals in space-constrained electronic systems.

Oscillators Feature Summary

• Integrates LVCMOS output logic for standard digital interface compatibility
• Features a low-profile 4-SMD No Lead package suitable for surface mount assembly
• Includes standby capability to reduce power consumption during inactive periods

Oscillators Applications

• General purpose clock signal generation in embedded systems
• Timing reference for microcontrollers and processors
• Data communication interfaces requiring stable clock sources

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD No Lead footprint matches your PCB layout constraints. Check for any specific operating temperature range limitations defined in the official datasheet for your application environment.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a small form factor. The LVCMOS output is appropriate for standard CMOS logic families. Consider the standby feature if power efficiency is a priority. Compare against other Mercury oscillators in the 18QHTF series for alternative frequencies or package sizes if needed.

Oscillators Part Context

This part belongs to the Mercury Electronics 18QHTF series of surface-mount crystal oscillators. The series typically offers various frequencies and voltages. The 'PD' suffix likely indicates the presence of a power-down pin or function. Mercury Electronics specializes in quartz frequency control products, including crystals, oscillators, and filters, with a long history in the industry.

Oscillators Replacement Considerations

Direct replacements must match the 4.1943 MHz frequency, 1.8V supply, LVCMOS output, and 2.0x1.6mm package size. Verify pinout compatibility if substituting with similar parts from other manufacturers. Ensure the replacement also supports the standby function if required by the design.