18QHTF21-20.048-OE

Oscillators Overview

The 18QHTF21-20.048-OE is a 20.048 MHz crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It utilizes LVCMOS output logic and operates at a supply voltage of 1.8V. The device features an enable/disable control function for power management. It is housed in a compact 4-SMD, No Lead surface-mount package with dimensions of 2.0x1.0 mm. This component is designed for applications requiring precise timing signals in space-constrained electronic systems.

Oscillators Feature Summary

• Provides stable 20.048 MHz clock signal generation using LVCMOS interface
• Supports low-power operation through integrated enable and disable control functionality
• Utilizes a compact 4-SMD no-lead surface mount package for efficient PCB layout

Oscillators Applications

• Digital signal processing circuits requiring precise clock synchronization
• Embedded systems utilizing low-voltage microcontrollers
• Communication modules needing standard frequency references

Oscillators Procurement Notes

Verify the specific operating voltage and load requirements against your system design before procurement. Ensure the 1.8V supply rail is stable to maintain frequency accuracy. Confirm that the enable pin logic levels are compatible with your controlling GPIO. Check the latest datasheet for any updates on mechanical dimensions or thermal characteristics to ensure proper board integration and reliability.

Oscillators Selection Notes

Select this oscillator when a 20.048 MHz frequency is required for digital interfaces such as USB or Ethernet PHYs. The 1.8V supply voltage makes it suitable for modern low-power portable devices. Consider the 4-SMD package size if board real estate is limited. Verify that the LVCMOS output swing matches the input thresholds of the receiving component to ensure reliable signal transmission without additional level shifting.

Oscillators Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series offers various frequencies and voltage options. The 18QHTF21-20.048-OE specifically targets the 20.048 MHz niche, common in high-speed data transmission standards. It represents a standard solution for timing needs where size and power consumption are critical constraints compared to larger through-hole or ceramic packages.

Oscillators Replacement Considerations

Direct replacements must match the 20.048 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package footprint. Verify pinout compatibility and electrical specifications such as current consumption and stability. Cross-reference with other manufacturers offering similar small-form-factor oscillators if Mercury Electronics parts are unavailable.