18QHTF21-19.940-OE

Oscillators Overview

The 18QHTF21-19.940-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 19.94 MHz and utilizes LVCMOS output logic levels. The device supports an enable/disable control function via a 1.8V supply voltage interface. It is housed in a compact 4-SMD, no-lead surface-mount package designed for automated assembly processes.

Oscillators Feature Summary

• Supports active enable and disable control functionality
• Utilizes LVCMOS output signal compatibility
• Features a compact 4-SMD no-lead surface mount form factor

Oscillators Applications

• Digital clock signal generation
• Microcontroller system timing references
• Communication interface synchronization

Oscillators Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your power management architecture. Ensure the 4-SMD no-lead footprint matches your PCB layout constraints. Request the official datasheet from Mercury Electronics to validate electrical parameters for final integration approval.

Oscillators Selection Notes

Select this component when a precise 19.94 MHz reference is required with low-voltage operation. The LVCMOS interface ensures compatibility with standard digital logic families. The enable pin allows for power management optimization in battery-operated devices. Consider the thermal characteristics of the no-lead package for high-density board designs.

Oscillators Part Context

This model belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series offers various frequency options within a standardized small outline package. The 'OE' suffix typically indicates the presence of an output enable control feature, distinguishing it from basic continuous-output variants in the same physical housing.

Oscillators Replacement Considerations

Direct replacements must match the 19.94 MHz frequency, LVCMOS output type, and 1.8V supply requirement. Verify pinout compatibility for the 4-SMD no-lead package. Cross-reference with other manufacturers offering similar small-form-factor oscillators if Mercury Electronics supply is unavailable.