18QHTF21-19.531-PD

Oscillators Overview

The 18QHTF21-19.531-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 19.531 MHz and utilizes LVCMOS output logic levels. The device supports a supply voltage range that includes 1.8V operation with standby or power-down functionality. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount assembly on printed circuit boards.

Oscillators Feature Summary

• Provides stable clock signals via LVCMOS output interface
• Supports low voltage operation including 1.8V supply
• Features integrated standby and power-down control modes

Oscillators Applications

• Digital signal processing systems requiring precise timing
• Communication equipment utilizing standard clock frequencies
• Embedded systems needing low-power oscillators with standby capability

Oscillators Procurement Notes

Verify the specific supply voltage requirements against your system design, as this component supports multiple voltage options including 1.8V. Confirm the package type matches your PCB footprint, specifically the 4-SMD No Lead configuration. Ensure the LVCMOS output compatibility aligns with your receiving logic inputs. Check for any specific temperature range limitations if operating in extreme environments.

Oscillators Selection Notes

Select this model when a 19.531 MHz reference is required for digital interfaces. Consider the 1.8V standby feature for power-sensitive designs. The small 4-SMD form factor suits space-constrained layouts. Verify that LVCMOS swing levels meet the noise immunity requirements of the target application circuitry.

Oscillators Part Context

This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronic. The series offers various frequencies and voltage options in a consistent 4-SMD package. Mercury Electronic is a established manufacturer of frequency control products, providing standardized XO solutions for industrial and consumer electronics applications.

Oscillators Replacement Considerations

Direct substitutes within the same series include other frequency variants like 18QHTF21-8.000-PD or 18QHTF21-96.768-PD if frequency adjustment is permissible. Cross-manufacturer replacements require matching LVCMOS output, 4-SMD package, and compatible supply voltage ranges.