S21805T-20.000-R

Oscillators Overview

The S21805T-20.000-R is a standard crystal oscillator manufactured by Aker Technology Corp, designed for surface-mount applications. It operates at a nominal frequency of 20.000 MHz with an HCMOS output waveform. The device requires a 1.8V supply voltage and features enable/disable functionality for power management. Frequency stability is rated at ±50ppm over the operating temperature range of -20°C to +70°C. The component is housed in a compact 4-SMD, No Lead package, suitable for space-constrained electronic designs requiring precise timing signals.

Oscillators Feature Summary

• HCMOS output interface for digital logic compatibility
• Enable/Disable control pin for active power management
• Compact 4-SMD no-lead surface mount package

Oscillators Applications

• Digital signal processing circuits
• Communication equipment clock sources
• Microcontroller system timing

Oscillators Procurement Notes

Verify that the specific part number matches the required frequency and voltage specifications before procurement. Confirm the package type and lead-free status align with assembly requirements. Ensure the operating temperature range meets the environmental conditions of the final application. Cross-reference the manufacturer's latest documentation for any updates to electrical characteristics or mechanical dimensions.

Oscillators Selection Notes

Select this oscillator when a 20 MHz clock signal with HCMOS output is required for low-voltage digital systems. The 1.8V supply requirement makes it suitable for modern low-power applications. Consider the ±50ppm stability rating against the system's jitter tolerance needs. The enable/disable feature allows for dynamic power savings in battery-operated devices.

Oscillators Part Context

This component belongs to the S21805T series of standard oscillators from Aker Technology Corp. The series offers various frequency options within a consistent 4-SMD footprint. These oscillators are designed for general-purpose timing applications where moderate stability and low cost are prioritized. The S21805T-20.000-R specifically provides the 20 MHz variant within this family.

Oscillators Replacement Considerations

Direct substitutes include other 20 MHz HCMOS oscillators in 4-SMD packages with 1.8V operation. Verify pinout compatibility and electrical parameters such as current consumption and load capacitance. Check if alternative manufacturers offer equivalent stability and temperature ranges.