18QHTF21-21.630-PD

Oscillators Overview

The 18QHTF21-21.630-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 21.63 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a power-down standby function to reduce consumption during inactive periods. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm. This component is designed for applications requiring precise timing signals in space-constrained electronic systems.

Oscillators Feature Summary

• Supports low-voltage operation at 1.8V
• Includes power-down standby functionality
• Provides LVCMOS output signal compatibility

Oscillators Applications

• General-purpose digital circuit timing
• Embedded system clock generation
• Portable electronic devices requiring low power

Oscillators Procurement Notes

Verify the specific suffix 'PD' confirms the power-down feature and '21.630' denotes the exact frequency. Ensure the 4-SMD no-lead package matches the PCB footprint requirements. Confirm that the 1.8V supply voltage aligns with the target system's power rails before integration.

Oscillators Selection Notes

Select this model when a small form factor is critical due to its 2.0x1.6 mm size. Choose it for designs needing active power management via the standby pin. Ensure the LVCMOS interface is compatible with the connected microcontroller or FPGA inputs without additional level shifting.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronic Ind. Co. Ltd, a manufacturer specializing in quartz crystals and oscillators. The series offers various frequencies and packages, catering to diverse timing needs in consumer and industrial electronics.

Oscillators Replacement Considerations

Compatible substitutes include other 21.63 MHz XO models in 4-SMD packages with LVCMOS outputs and 1.8V operation, such as variants from the same series like 18QHTF21-21.630-OE if leaded packaging is acceptable.