18QHTF21-19.997-OE

Oscillators Overview

The 18QHTF21-19.997-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 19.997 MHz and utilizes LVCMOS output logic levels. The device functions with a supply voltage of 1.8V and includes an enable/disable control pin for power management. It is housed in a compact 4-SMD, no lead package with dimensions of 2.0mm x 1.6mm, suitable for surface mount applications.

Oscillators Feature Summary

• Integrates enable/disable functionality for efficient power management
• Provides stable LVCMOS clock signals for digital circuit timing
• Utilizes a compact surface-mount package for space-constrained designs

Oscillators Applications

• Timing and clock signal generation in electronic devices
• Embedded systems requiring precise frequency references
• Portable electronics utilizing low-voltage operation

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your design specifications before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD footprint matches your PCB layout constraints. Request the official datasheet from Mercury Electronics to validate electrical characteristics and reliability standards for your application environment.

Oscillators Selection Notes

Select this component when a 19.997 MHz reference is required with low voltage operation. Consider the enable pin feature if power conservation is critical. Evaluate the small form factor against available board space. Compare performance metrics such as phase noise and stability against alternative oscillators to ensure compatibility with sensitive digital interfaces.

Oscillators Part Context

This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronics. The series offers various frequencies within a standardized 2.0x1.6mm SMD package. These components are designed for general-purpose timing applications where size and low voltage are primary constraints. The manufacturer has extensive experience in quartz crystal production.

Oscillators Replacement Considerations

Direct substitutes must match the 19.997 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm footprint. Verify pinout compatibility and enable function behavior. Cross-reference with other manufacturers offering similar low-profile oscillators, ensuring identical electrical parameters and mechanical dimensions for drop-in replacement.