18QHTF57-17.4556-PD

Oscillators Overview

The 18QHTF57-17.4556-PD is a standard frequency LVCMOS oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 17.4556 MHz with a supply voltage of 1.8V. The device features a frequency stability of ±50 ppm and supports a power-down standby mode. It is housed in a compact 4-SMD, No Lead package suitable for surface mount applications. The unit functions within an operating temperature range of -40°C to 85°C, with a maximum supply current of 22mA.

Oscillators Feature Summary

• LVCMOS output signal interface
• Integrated power-down standby control
• Surface mount 4-SMD no lead packaging

Oscillators Applications

• General purpose clock generation in embedded systems
• Data communication interfaces requiring stable timing
• Consumer electronics utilizing low-voltage logic

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply rail is stable and compatible with the oscillator's electrical specifications. Ensure the PCB footprint matches the 4-SMD no lead package dimensions provided in the official datasheet to guarantee proper soldering and mechanical retention during assembly processes.

Oscillators Selection Notes

Select this component when a precise 17.4556 MHz reference is required for digital circuits operating at 1.8V logic levels. The integrated power-down feature makes it suitable for battery-operated devices where energy conservation is critical. Consider the ±50 ppm stability rating for applications that do not require ultra-high precision but need reliable standard timing sources within industrial temperature ranges.

Oscillators Part Context

This oscillator belongs to the 18QHTF57 series from Mercury Electronics, designed for low-power applications. The series typically offers various frequency options within a standardized small outline package. The 'PD' suffix indicates the inclusion of a power-down pin for standby functionality, distinguishing it from continuous-operation variants in the same family.

Oscillators Replacement Considerations

Direct substitutes include other 17.4556 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation and similar stability ratings. Verify pinout compatibility and thermal characteristics when cross-referencing with alternative manufacturers.