18QHTF57-21.500-OE

Oscillators Overview

The 18QHTF57-21.500-OE is a 21.5 MHz crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates with a 1.8V supply voltage and delivers an LVCMOS output signal. The component supports enable and disable functionality for power management. It features a frequency stability of ±50ppm and draws a maximum supply current of 22mA. The device is designed for surface mount installation within an operating temperature range of -40°C to 85°C.

Oscillators Feature Summary

• Provides stable 21.5 MHz timing signals via LVCMOS interface
• Supports low-power operation through enable/disable control
• Designed for compact surface-mount integration

Oscillators Applications

• Embedded systems requiring precise clock generation
• Consumer electronics with limited power budgets
• Industrial control modules operating in variable temperatures

Oscillators Procurement Notes

Verify the specific frequency tolerance and package dimensions against the official datasheet before finalizing design integration. Confirm that the 1.8V supply requirement aligns with the target system's voltage rails. Ensure the LVCMOS output levels are compatible with downstream logic inputs. Check for any specific handling requirements related to the surface-mount package type during assembly.

Oscillators Selection Notes

Select this component when a 21.5 MHz reference is required with strict power constraints due to its 1.8V operation. Consider the ±50ppm stability for applications where moderate precision is sufficient. The enable/disable feature makes it suitable for battery-powered devices needing active power management. Verify thermal performance within the specified -40°C to 85°C range for the intended environment.

Oscillators Part Context

This part belongs to the 18QHTF57 series from Mercury Electronics, which specializes in quartz-based frequency control products. The series includes various XO models with different frequencies and supply voltages. Mercury has produced these components since 1973, focusing on surface-mount solutions for modern electronic designs.

Oscillators Replacement Considerations

Direct substitutes include other 21.5 MHz LVCMOS oscillators with 1.8V supply and similar pinout configurations. Cross-reference with Mercury's own variants like the 18QHTF57-21.500 if lead-free status differs. Ensure any replacement maintains the same enable/disable functionality and temperature range.