18QHTF21-20.000-PD

Oscillators Overview

The 18QHTF21-20.000-PD is a 20 MHz crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It utilizes LVCMOS output logic and operates at a supply voltage of 1.8V. The device features a compact 4-SMD, no lead package with dimensions of 2.0x1.6 mm. It supports a power-down mode for standby functionality. The component is designed to provide stable clock signals for electronic applications requiring low-voltage operation.

Oscillators Feature Summary

• Generates precise 20 MHz clock signals using LVCMOS output interface
• Operates on a single 1.8V power supply rail
• Incorporates a power-down feature for energy-efficient standby modes
• Utilizes a small-footprint 4-SMD surface-mount package

Oscillators Applications

• Low-voltage digital circuit clocking
• Portable electronic devices requiring power efficiency
• Embedded systems needing stable timing references
• Communication modules utilizing LVCMOS interfaces

Oscillators Procurement Notes

Verify the specific suffix 'PD' confirms the inclusion of the power-down control pin functionality as documented in official specifications. Ensure that the 1.8V operating voltage aligns with the target system's power rails. Confirm the 4-SMD 2.0x1.6 mm package dimensions fit the designated PCB footprint. Cross-reference the manufacturer's latest datasheet to validate electrical characteristics against current design requirements.

Oscillators Selection Notes

Select this component when a 20 MHz frequency is required within a 1.8V logic environment. The LVCMOS output is suitable for direct interfacing with standard digital inputs. The power-down capability makes it appropriate for battery-operated or power-sensitive designs. Consider the 2.0x1.6 mm package size for space-constrained layouts compared to larger through-hole alternatives.

Oscillators Part Context

This model belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series typically offers various frequencies and voltage options. The '-PD' designation indicates the presence of a power-down control feature, distinguishing it from standard continuous-operation variants within the same family.

Oscillators Replacement Considerations

Consult official substitution lists for compatible parts. Verify that any alternative maintains the 20 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6 mm package constraints.