18QHTF21-38.785-PD

Oscillators Overview

The 18QHTF21-38.785-PD is a quartz crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 38.785 MHz with LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby (power down) function. It is housed in a 4-SMD, no lead package with dimensions of 2.0x1.6mm.

Oscillators Feature Summary

• Integrated power-down capability for energy management
• Standard LVCMOS output interface
• Compact surface-mount form factor

Oscillators Applications

• General electronic timing circuits
• Data communication systems
• Consumer electronics devices

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the PCB footprint matches the 4-SMD no lead package dimensions to guarantee proper soldering and mechanical stability during assembly processes.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a compact 2.0x1.6mm footprint. The inclusion of a power-down feature makes it suitable for battery-operated applications where standby current reduction is critical. Ensure the application does not require differential outputs or higher voltage levels than 1.8V.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various standard frequency options in a small SMD package. The series is designed for applications requiring precise timing with minimal board space. Other variants in the series share similar electrical characteristics but differ in operating frequency and potentially package height specifications.

Oscillators Replacement Considerations

Direct substitutes must match the 38.785 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no lead package. Verify pin compatibility and thermal characteristics. Cross-reference with other manufacturers offering equivalent small-form-factor oscillators if availability is an issue.