18QHTF21-3.110-PD

Oscillators Overview

The 18QHTF21-3.110-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 3.11 MHz and utilizes LVCMOS output logic levels. The device supports a supply voltage of 1.8V and includes a power-down feature for standby mode control. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications requiring precise timing signals with low profile constraints.

Oscillators Feature Summary

• Generates stable 3.11 MHz clock signals using LVCMOS interface
• Supports active standby operation via power-down control pin
• Designed for surface-mount assembly with leadless SMD footprint

Oscillators Applications

• General-purpose digital system clock generation
• Microcontroller and processor timing references
• Communication interface synchronization circuits

Oscillators Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to ensure compatibility with required voltage and load conditions. Confirm that the 4-SMD no-lead package dimensions align with the target PCB layout. Check for RoHS compliance status and moisture sensitivity level requirements before integration into the production line.

Oscillators Selection Notes

Select this component when a fixed 3.11 MHz frequency is required with LVCMOS compatibility. Consider the 1.8V supply constraint and the need for power-down functionality. Ensure the application environment falls within the specified operating temperature range and that the small form factor fits the available board space.

Oscillators Part Context

This part belongs to the QHTF series of quartz crystal oscillators from Mercury Electronic. The series typically offers various frequencies and supply voltages. The 18QHTF21 variant specifically denotes the 1.8V supply version with a standard output type, distinguishing it from higher voltage or different package options within the same product family.

Oscillators Replacement Considerations

Direct substitutes include other 3.11 MHz LVCMOS oscillators in 4-SMD packages from manufacturers such as Epson, NDK, or SiTime, provided electrical parameters match. Verify pinout compatibility and thermal characteristics before swapping.