18QHTF21-19.500-OE

Oscillators Overview

The 18QHTF21-19.500-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 19.5 MHz and utilizes LVCMOS output logic levels. The device is designed for low-voltage applications, functioning with a supply voltage of 1.8V. A key functional attribute is the inclusion of an Enable/Disable control pin, allowing for power management during inactive periods. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly processes in consumer electronics and communication devices requiring precise timing signals.

Oscillators Feature Summary

• LVCMOS output interface for digital compatibility
• Integrated enable/disable functionality for power control
• Compact 4-SMD no-lead surface mount package

Oscillators Applications

• Timing and clock signal generation in electronic devices
• Consumer electronics requiring precise frequency references
• Communication equipment utilizing standard crystal oscillators

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD package footprint matches your PCB layout constraints. Cross-reference the OE suffix to confirm the enable pin configuration meets your control logic needs.

Oscillators Selection Notes

Select this model when a 19.5 MHz reference is required with low-power operation capabilities. The LVCMOS output ensures compatibility with standard digital logic families. Consider the enable feature if power conservation is critical during standby modes. Verify that the 1.8V operating voltage is supported by your target application environment.

Oscillators Part Context

This component belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronics. The series typically offers various frequency options within a standardized small outline package. These oscillators are designed for general-purpose timing applications where size and power efficiency are prioritized over high-performance specifications found in oven-controlled or temperature-compensated variants.

Oscillators Replacement Considerations

Direct substitutes must match the 19.5 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Check datasheets for equivalent parts from other manufacturers offering identical electrical characteristics and pin configurations to ensure seamless integration without redesign.