18QHTF21-49.0908-PD

Oscillators Overview

The 18QHTF21-49.0908-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 49.0908 MHz with an LVCMOS output logic level. The device requires a 1.8V supply voltage and features a Standby (Power Down) function for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. The maximum current supply is specified as 23mA.

Oscillators Feature Summary

• Supports Standby (Power Down) mode for energy efficiency
• Utilizes LVCMOS output logic for digital interface compatibility
• Employs a base crystal resonator for frequency stability
• Designed in a small form factor SMD package

Oscillators Applications

• Digital signal processing systems requiring precise timing
• Communication equipment utilizing standard clock frequencies
• Embedded systems with low voltage power constraints
• Portable electronic devices needing compact oscillators

Oscillators Procurement Notes

Verify the exact frequency tolerance and load capacitance requirements against your circuit design specifications before procurement. Confirm that the 1.8V supply rail can support the maximum 23mA current draw during active operation. Ensure the PCB footprint matches the 2.0x1.6mm 4-SMD no lead package dimensions to avoid assembly issues. Check for any specific reflow soldering profile recommendations provided by the manufacturer to maintain component integrity.

Oscillators Selection Notes

Select this component when a 49.0908 MHz clock signal is required with LVCMOS compatibility. Consider the 1.8V operating voltage constraint for system power budget alignment. The standby feature makes it suitable for battery-powered applications where power conservation is critical. Evaluate the physical size constraints to ensure the 2.0x1.6mm package fits within the designated area on the printed circuit board layout.

Oscillators Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various standard frequencies with consistent electrical characteristics. The 'PD' suffix indicates the inclusion of a power-down pin or functionality. These oscillators are designed for general-purpose timing applications in consumer and industrial electronics.

Oscillators Replacement Considerations

Direct substitutes include other 49.0908 MHz LVCMOS oscillators in 2.0x1.6mm packages with 1.8V operation. Verify pinout compatibility and electrical parameters such as current consumption and output swing before substitution.