18QHTF21-40.0786-OE

Oscillators Overview

The 18QHTF21-40.0786-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 40.0786 MHz with an LVCMOS output logic level. The device requires a 1.8V supply voltage and features an Enable/Disable control function for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm. The unit supports a frequency stability of ±50ppm and functions within an operating temperature range of -40°C to 85°C.

Oscillators Feature Summary

• Integrates an enable/disable pin for active standby power down functionality
• Delivers LVCMOS output signals suitable for low-voltage digital interfaces
• Utilizes a leadless surface-mount package for automated assembly compatibility

Oscillators Applications

• Portable electronic devices requiring low power consumption
• Communication modules utilizing standard clock frequencies
• Embedded systems with strict size constraints

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 remains stable under all operating conditions to ensure signal integrity. Ensure the PCB footprint matches the 4-SMD no-lead package specifications provided in the official datasheet to prevent soldering defects during assembly.

Oscillators Selection Notes

Select this component when a precise 40.0786 MHz reference is required for LVCMOS-compatible logic circuits. Consider the ±50ppm stability specification for applications sensitive to clock drift over temperature variations. The integrated enable feature makes it suitable for battery-operated systems where power conservation during idle states is critical for extending operational life.

Oscillators Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series offers various frequency options within a standardized 2.0x1.6mm form factor. These components are designed to replace through-hole crystals with integrated driver circuits, simplifying board layout while maintaining high reliability in consumer and industrial electronics environments.

Oscillators Replacement Considerations

Direct substitutes include other 1.8V LVCMOS oscillators in 4-SMD packages with identical 40.0786 MHz frequency and ±50ppm stability. Verify pinout compatibility and thermal characteristics before swapping manufacturers.