18QHTF21-40.078-OE

Oscillators Overview

The 18QHTF21-40.078-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 40.078 MHz and utilizes LVCMOS output logic. The device is designed for low-voltage applications, requiring a supply voltage of 1.8V. It features an enable/disable control function to manage power consumption. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly on printed circuit boards.

Oscillators Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes hardware enable/disable functionality for power management
• Operates with a single 1.8V power supply
• Utilizes a leadless SMD package for space-constrained designs

Oscillators Applications

• Digital signal processing systems requiring precise clock timing
• Communication equipment utilizing LVCMOS interfaces
• Portable electronic devices powered by low-voltage sources
• Embedded systems needing controlled clock enablement

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your system design before ordering. Confirm that the 1.8V supply voltage aligns with your target platform's power rails. Ensure the PCB footprint matches the 4-SMD No Lead package dimensions provided in the official datasheet to guarantee proper soldering and mechanical stability during assembly processes.

Oscillators Selection Notes

Select this component when a stable 40.078 MHz clock source is required for LVCMOS-compatible circuits. Consider the 1.8V operating voltage as a primary constraint for power supply design. The enable/disable feature makes it suitable for battery-operated applications where power conservation is critical. Evaluate the thermal performance and size constraints of the 4-SMD package relative to the available board space.

Oscillators Part Context

This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronics. The series offers various frequencies while maintaining consistent electrical characteristics and package types. The 'OE' suffix typically denotes specific packaging or tape-and-reel configurations. These oscillators are designed for general-purpose timing applications in consumer and industrial electronics.

Oscillators Replacement Considerations

Direct replacements must match the 40.078 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD No Lead package. Verify pinout compatibility and electrical specifications such as jitter and phase noise if specified in the original design. Consult manufacturer cross-reference lists for verified equivalent parts.