18QHTF21-21.1184-PD

Oscillators Overview

The 18QHTF21-21.1184-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 21.1184 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a standby mode for power down functionality. It is housed in a compact 4-SMD, No Lead package suitable for surface mount applications. The unit supports a maximum supply current of 22mA and maintains frequency stability within ±50ppm across the operating temperature range of -40°C to 85°C.

Oscillators Feature Summary

• Supports low voltage operation at 1.8V with integrated standby capability
• Delivers standard LVCMOS output signals for digital interface compatibility
• Constructed in a leadless surface mount package for automated assembly

Oscillators Applications

• Embedded systems requiring precise clock timing
• Consumer electronics utilizing low voltage logic interfaces
• Industrial control modules operating in variable thermal environments

Oscillators Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to ensure correct packaging and tape-and-reel specifications. Confirm that the requested variant matches the exact frequency tolerance and load capacitance requirements of the target circuit design before finalizing purchase orders.

Oscillators Selection Notes

Select this component when a low-profile surface mount oscillator is required for 1.8V logic systems. Ensure the application environment remains within the specified -40°C to 85°C operational range. Verify that the 22mA maximum current draw aligns with the power budget constraints of the host system design.

Oscillators Part Context

This model belongs to the 18QHTF series of surface mount oscillators from Mercury Electronics. The series utilizes quartz crystal technology to provide stable frequency generation. The part number indicates specific electrical characteristics including the 1.8V supply requirement and the particular frequency output designated by the numerical suffix.

Oscillators Replacement Considerations

Direct substitutes include other 18QHTF series variants with identical pinout and voltage specifications but different frequencies. Cross-reference datasheets to confirm matching package dimensions and output logic levels before implementing alternative components.