18QHTF21-19.662-PD

Oscillators Overview

The 18QHTF21-19.662-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 19.662 MHz and utilizes LVCMOS output logic levels. The device is designed for a supply voltage of 1.8V and includes a standby or power-down function to manage energy consumption during inactive periods. It is housed in a compact 4-SMD, no lead package suitable for surface-mount assembly.

Oscillators Feature Summary

• Supports low-voltage operation with 1.8V supply requirement
• Integrates standby mode for power management
• Provides LVCMOS signal output compatibility

Oscillators Applications

• Embedded systems requiring precise timing references
• Communication modules utilizing standard clock signals
• Portable electronic devices prioritizing low power consumption

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply rail is stable and within the operational limits specified in the official datasheet. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions provided in the manufacturer's mechanical drawings to guarantee proper soldering and electrical connection.

Oscillators Selection Notes

Select this component when a 19.662 MHz clock source is required with minimal power usage. The LVCMOS interface ensures compatibility with standard digital logic families. Consider the physical size constraints of the 4-SMD package for dense board layouts. Evaluate the need for power-down capabilities if the system enters sleep modes frequently to optimize overall battery life.

Oscillators Part Context

This model belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronics. The series typically offers various frequency options while maintaining consistent electrical characteristics and packaging standards. The suffix PD indicates the inclusion of power-down functionality, distinguishing it from continuous-operation variants within the same product line.

Oscillators Replacement Considerations

Direct substitutes include other 18QHTF21 series parts with identical frequencies and pinouts, such as those without the PD suffix if power-down is not needed. Cross-reference with other manufacturers offering 19.662 MHz LVCMOS oscillators in 4-SMD packages, ensuring voltage and current specifications align.